387
FNUS55 KRIW 181854
FWFRIW
FIRE WEATHER PLANNING FORECAST FOR WESTERN AND CENTRAL WYOMING
NATIONAL WEATHER SERVICE RIVERTON WY
1254 PM MDT TUE AUG 18 2026
DISCUSSION
...YELLOWSTONE NP AND TETON DISPATCH AREAS (INCLUDES FIRE WEATHER
ZONES 140...414...415...AND 416)...
SHOWERS AND THUNDERSTORMS DIMINISH THIS EVENING, WITH A FEW POSSIBLY
LINGERING THROUGH AROUND MIDNIGHT. THE STRONGEST STORMS THIS
AFTERNOON COULD BRING GUSTY OUTFLOW WINDS TO AROUND 50 MPH. DRIER
AIR WEDNESDAY KEEPS PRECIPITATION CHANCES UNDER 10 PERCENT. HIGH
TEMPERATURES TREND AROUND 5 DEGREES WARMER, WITH MINIMUM HUMIDITY
TRENDING 10 TO 20 PERCENT DRIER.
..CODY DISPATCH AREA (INCLUDES FIRE WEATHER ZONES 275...276
282...283...285...286...287...288...AND 289)...
SHOWER AND THUNDERSTORM CHANCES CONTINUE THROUGH MIDNIGHT, WITH THE
STRONGEST STORMS OCCURRING THROUGH ABOUT 2000 WHEN GUSTS TO 60 MPH
AND SMALL HAIL ARE POSSIBLE. DRIER AIR WEDNESDAY KEEPS PRECIPITATION
CHANCES NEAR 0 PERCENT. HIGH TEMPERATURES TREND AROUND 5 DEGREES
WARMER, WITH MINIMUM HUMIDITY TRENDING AROUND 10 PERCENT DRIER IN
THE LOWER ELEVATIONS AND 15 TO 20 PERCENT DRIER IN THE HIGHER
TERRAIN.
..CASPER DISPATCH AREA (INCLUDES FIRE WEATHER ZONES 277...278
279...280...281...285...289...AND 300)...
SHOWER AND THUNDERSTORM CHANCES CONTINUE THROUGH MIDNIGHT, WITH THE
STRONGEST STORMS OCCURRING THROUGH ABOUT 2000 WHEN GUSTS TO 60 MPH
AND SMALL HAIL ARE POSSIBLE. STORMS LINGER LONGEST OVER EASTERN
ZONES, LIKE 280, 281, AND 285. DRIER AIR WEDNESDAY KEEPS
PRECIPITATION CHANCES NEAR 0 PERCENT. HIGH TEMPERATURES TREND AROUND
5 DEGREES WARMER, WITH MINIMUM HUMIDITY TRENDING 10 TO 15 PERCENT
DRIER.
..THUNDERSTORMS IMPLY STRONG GUSTY AND ERRATIC WINDS
WYZ280-192100-
NATRONA COUNTY/CASPER BLM-
INCLUDING THE CITIES OF CASPER AND MIDWEST
1254 PM MDT TUE AUG 18 2026
THIS AFTERNOON
SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF SHOWERS AND
THUNDERSTORMS EARLY IN THE EVENING, THEN SLIGHT
CHANCE OF SHOWERS AND THUNDERSTORMS EARLY IN
THE EVENING. SOME THUNDERSTORMS MAY BE SEVERE.
CHANCE OF PRECIPITATION 40 PERCENT.
CHANCE OF THUNDER...30 PERCENT.
MAX TEMPERATURE.....76-81.
24 HR TREND......4 DEGREES COOLER.
MIN HUMIDITY........30-36 PERCENT.
24 HR TREND......9 PERCENT WETTER.
20-FOOT WINDS.......SOUTHWEST WINDS AROUND 15 MPH WITH GUSTS TO
AROUND 25 MPH.
RIDGE TOP WINDS.....SOUTHWEST AROUND 20 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST AROUND 20 MPH.
MIXING HEIGHT.......4800-6800 FT AGL.
SMOKE DISPERSAL.....GOOD TO VERY GOOD.
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY. CHANCE OF SHOWERS AND SLIGHT
CHANCE OF THUNDERSTORMS IN THE EVENING, THEN
SLIGHT CHANCE OF SHOWERS AFTER MIDNIGHT. SOME
THUNDERSTORMS MAY BE SEVERE EARLY IN THE
EVENING. CHANCE OF PRECIPITATION 50 PERCENT.
CHANCE OF THUNDER...20 PERCENT.
MIN TEMPERATURE.....51-56.
24 HR TREND......3 DEGREES COOLER.
MAX HUMIDITY........74-80 PERCENT.
24 HR TREND......5 PERCENT WETTER.
HUMIDITY RECOVERY...EXCELLENT.
20-FOOT WINDS.......NORTHWEST WINDS AROUND 15 MPH WITH GUSTS TO
AROUND 25 MPH UNTIL 2100, THEN NORTHEAST WITH
GUSTS TO AROUND 25 MPH UNTIL 2400, THEN
DOWNSLOPE/DOWNVALLEY 4-7 MPH.
RIDGE TOP WINDS.....NORTH AROUND 15 MPH UNTIL 2400, THEN SOUTHWEST.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....NORTHWEST AROUND 15 MPH UNTIL 2400, THEN
SOUTHWEST.
MIXING HEIGHT.......1400-3400 FT AGL UNTIL 2400, THEN 400-600 FT
AGL.
SMOKE DISPERSAL.....POOR.
WEDNESDAY
SKY/WEATHER.........MOSTLY SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....80-85.
24 HR TREND......3 DEGREES WARMER.
MIN HUMIDITY........17-23 PERCENT.
24 HR TREND......14 PERCENT DRIER.
20-FOOT WINDS.......WEST WINDS AROUND 10 MPH UNTIL 1500, THEN
NORTHWEST. GUSTS UP TO 20 MPH.
RIDGE TOP WINDS.....WEST 15 TO 20 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST 15 TO 20 MPH.
MIXING HEIGHT.......1600-3600 FT AGL UNTIL 1200, THEN 7400-9400 FT
AGL.
SMOKE DISPERSAL.....POOR UNTIL 1200, THEN VERY GOOD.
WEDNESDAY NIGHT
SKY/WEATHER.........MOSTLY CLEAR.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....53-58.
24 HR TREND......2 DEGREES WARMER.
MAX HUMIDITY........48-54 PERCENT.
24 HR TREND......28 PERCENT DRIER.
HUMIDITY RECOVERY...MODERATE.
20-FOOT WINDS.......NORTHWEST WINDS AROUND 10 MPH UNTIL 2100, THEN
DOWNSLOPE/DOWNVALLEY 4-7 MPH. GUSTS UP TO 20
MPH.
RIDGE TOP WINDS.....NORTH 10 TO 15 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....NORTHEAST 10 TO 15 MPH.
MIXING HEIGHT.......3800-5800 FT AGL UNTIL 2400, THEN 400-600 FT
AGL.
SMOKE DISPERSAL.....FAIR TO GOOD UNTIL 2400, THEN POOR.
THURSDAY
SKY/WEATHER.........MOSTLY SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....85-90.
24 HR TREND......6 DEGREES WARMER.
MIN HUMIDITY........11-17 PERCENT.
24 HR TREND......4 PERCENT DRIER.
20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH UNTIL 1200, THEN WEST
AROUND 10 MPH WITH GUSTS TO AROUND 25 MPH.
RIDGE TOP WINDS.....WEST 10 TO 15 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST 10 TO 15 MPH.
MIXING HEIGHT.......1800-3800 FT AGL UNTIL 1200, THEN 8000-10000 FT
AGL.
SMOKE DISPERSAL.....POOR UNTIL 1200, THEN VERY GOOD.
FORECAST DAYS 3 THROUGH 7...
THURSDAY THROUGH FRIDAY
MOSTLY CLEAR. LOWS 58 TO 63. HIGHS
AROUND 90. WINDS GENERALLY LESS THAN 10 MPH.
SATURDAY
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND SLIGHT
CHANCE OF THUNDERSTORMS. LOWS IN THE LOWER 60S. HIGHS AROUND 90.
SOUTHWEST WINDS AROUND 10 MPH.
SUNDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS IN THE UPPER 50S. HIGHS IN THE UPPER 80S.
WEST WINDS AROUND 10 MPH.
MONDAY THROUGH TUESDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS. LOWS IN THE UPPER 50S. HIGHS IN THE
MID 80S.
WYZ283-192100-
UPPER WIND RIVER BASIN/WIND RIVER BASIN-
INCLUDING THE CITIES OF CROWHEART, LANDER, RIVERTON, AND SHOSHONI
1254 PM MDT TUE AUG 18 2026
THIS AFTERNOON
SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF SHOWERS AND
THUNDERSTORMS. SOME THUNDERSTORMS MAY BE
SEVERE. CHANCE OF PRECIPITATION 50 PERCENT.
CHANCE OF THUNDER...30 PERCENT.
MAX TEMPERATURE.....75-80.
24 HR TREND......UNCHANGED.
MIN HUMIDITY........32-38 PERCENT.
24 HR TREND......4 PERCENT WETTER.
20-FOOT WINDS.......SOUTHWEST WINDS AROUND 15 MPH WITH GUSTS TO
AROUND 25 MPH.
RIDGE TOP WINDS.....SOUTHWEST AROUND 15 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST AROUND 15 MPH.
MIXING HEIGHT.......3800-5400 FT AGL.
SMOKE DISPERSAL.....FAIR TO GOOD.
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY. CHANCE OF SHOWERS AND SLIGHT
CHANCE OF THUNDERSTORMS IN THE EVENING. SLIGHT
CHANCE OF SHOWERS AFTER MIDNIGHT. SOME
THUNDERSTORMS MAY BE SEVERE EARLY IN THE
EVENING. CHANCE OF PRECIPITATION 50 PERCENT.
CHANCE OF THUNDER...20 PERCENT.
MIN TEMPERATURE.....49-54.
24 HR TREND......4 DEGREES COOLER.
MAX HUMIDITY........69-75 PERCENT.
24 HR TREND......UNCHANGED.
HUMIDITY RECOVERY...GOOD.
20-FOOT WINDS.......NORTHWEST WINDS AROUND 10 MPH WITH GUSTS TO
AROUND 25 MPH UNTIL 2100, THEN NORTHEAST WITH
GUSTS TO AROUND 25 MPH UNTIL 2400, THEN
DOWNSLOPE/DOWNVALLEY 4-7 MPH.
RIDGE TOP WINDS.....NORTH AROUND 15 MPH UNTIL 2400, THEN WEST.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....NORTHWEST AROUND 15 MPH UNTIL 2400, THEN
SOUTHWEST.
MIXING HEIGHT.......1200-3200 FT AGL UNTIL 2400, THEN 400-600 FT
AGL.
SMOKE DISPERSAL.....POOR.
WEDNESDAY
SKY/WEATHER.........MOSTLY SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....79-84.
24 HR TREND......4 DEGREES WARMER.
MIN HUMIDITY........21-27 PERCENT.
24 HR TREND......10 PERCENT DRIER.
20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH UNTIL 1500, THEN NORTH
AROUND 10 MPH WITH GUSTS TO AROUND 25 MPH.
RIDGE TOP WINDS.....WEST AROUND 10 MPH UNTIL 1200, THEN NORTH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST 10 TO 15 MPH.
MIXING HEIGHT.......1000-3000 FT AGL UNTIL 1200, THEN 5800-7800 FT
AGL.
SMOKE DISPERSAL.....POOR UNTIL 1200, THEN GOOD.
WEDNESDAY NIGHT
SKY/WEATHER.........MOSTLY CLEAR.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....52-57.
24 HR TREND......3 DEGREES WARMER.
MAX HUMIDITY........45-51 PERCENT.
24 HR TREND......28 PERCENT DRIER.
HUMIDITY RECOVERY...MODERATE.
20-FOOT WINDS.......NORTH WINDS AROUND 10 MPH UNTIL 2400, THEN WEST
UNTIL 0300, THEN DOWNSLOPE/DOWNVALLEY 4-7 MPH.
GUSTS UP TO 20 MPH.
RIDGE TOP WINDS.....NORTH AROUND 15 MPH UNTIL 2400, THEN WEST.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....NORTHWEST 10 TO 15 MPH.
MIXING HEIGHT.......3400-5400 FT AGL UNTIL 2400, THEN 400-600 FT
AGL.
SMOKE DISPERSAL.....FAIR TO GOOD UNTIL 2400, THEN POOR.
THURSDAY
SKY/WEATHER.........MOSTLY SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....84-89.
24 HR TREND......4 DEGREES WARMER.
MIN HUMIDITY........18-24 PERCENT.
24 HR TREND......3 PERCENT DRIER.
20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH.
RIDGE TOP WINDS.....SOUTHWEST AROUND 10 MPH UNTIL 1200, THEN WEST.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST AROUND 10 MPH.
MIXING HEIGHT.......1200-3200 FT AGL UNTIL 1200, THEN 6400-8400 FT
AGL.
SMOKE DISPERSAL.....POOR UNTIL 1200, THEN GOOD.
FORECAST DAYS 3 THROUGH 7...
THURSDAY NIGHT
PARTLY CLOUDY. LOWS AROUND 60. WINDS GENERALLY
LESS THAN 10 MPH.
FRIDAY THROUGH SUNDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS. LOWS 58 TO 63. HIGHS 85 TO 90. WEST
WINDS AROUND 10 MPH.
MONDAY THROUGH TUESDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS. LOWS IN THE UPPER 50S. HIGHS IN THE
MID 80S.
WYZ285-192100-
SOUTH BIGHORN MOUNTAINS-
1254 PM MDT TUE AUG 18 2026
THIS AFTERNOON
SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS EARLY IN THE EVENING, THEN CHANCE
OF SHOWERS AND THUNDERSTORMS EARLY IN THE
EVENING. SOME THUNDERSTORMS MAY BE SEVERE.
CHANCE OF PRECIPITATION 40 PERCENT.
CHANCE OF THUNDER...30 PERCENT.
MAX TEMPERATURE.....70-75.
24 HR TREND......2 DEGREES COOLER.
MIN HUMIDITY........31-37 PERCENT.
24 HR TREND......8 PERCENT WETTER.
20-FOOT WINDS.......WEST WINDS AROUND 15 MPH WITH GUSTS TO AROUND
30 MPH.
RIDGE TOP WINDS.....WEST AROUND 20 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST AROUND 20 MPH.
MIXING HEIGHT.......5000-7000 FT AGL.
SMOKE DISPERSAL.....GOOD TO VERY GOOD.
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY. CHANCE OF SHOWERS IN THE
EVENING. SLIGHT CHANCE OF THUNDERSTORMS IN THE
EVENING. SLIGHT CHANCE OF SHOWERS LATE IN THE
EVENING. SOME THUNDERSTORMS MAY BE SEVERE EARLY
IN THE EVENING. CHANCE OF PRECIPITATION 50
PERCENT.
CHANCE OF THUNDER...20 PERCENT.
MIN TEMPERATURE.....50-55.
24 HR TREND......2 DEGREES COOLER.
MAX HUMIDITY........65-71 PERCENT.
24 HR TREND......UNCHANGED.
HUMIDITY RECOVERY...GOOD.
20-FOOT WINDS.......NORTHWEST WINDS 10 TO 15 MPH WITH GUSTS TO
AROUND 25 MPH UNTIL 2400, THEN WEST WITH GUSTS
TO AROUND 15 MPH.
RIDGE TOP WINDS.....WEST AROUND 15 MPH.
CHC OF WETTING RAIN.LESS THAN 5 PERCENT.
TRANSPORT WINDS.....WEST AROUND 15 MPH.
MIXING HEIGHT.......1400-3400 FT AGL UNTIL 2400, THEN 400-600 FT
AGL.
SMOKE DISPERSAL.....POOR.
WEDNESDAY
SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....73-78.
24 HR TREND......3 DEGREES WARMER.
MIN HUMIDITY........19-25 PERCENT.
24 HR TREND......14 PERCENT DRIER.
20-FOOT WINDS.......WEST WINDS 10 TO 15 MPH UNTIL 1500, THEN
NORTHWEST. GUSTS UP TO 25 MPH.
RIDGE TOP WINDS.....WEST 15 TO 20 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST 15 TO 20 MPH.
MIXING HEIGHT.......2200-4200 FT AGL UNTIL 1200, THEN 6400-8400 FT
AGL.
SMOKE DISPERSAL.....POOR TO FAIR UNTIL 1200, THEN VERY GOOD.
WEDNESDAY NIGHT
SKY/WEATHER.........MOSTLY CLEAR.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....54-59.
24 HR TREND......4 DEGREES WARMER.
MAX HUMIDITY........38-44 PERCENT.
24 HR TREND......27 PERCENT DRIER.
HUMIDITY RECOVERY...MODERATE.
20-FOOT WINDS.......NORTH WINDS AROUND 10 MPH UNTIL 2400, THEN
DOWNSLOPE/DOWNVALLEY 4-7 MPH. GUSTS UP TO 20
MPH.
RIDGE TOP WINDS.....NORTHEAST 10 TO 15 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....NORTHEAST 10 TO 15 MPH.
MIXING HEIGHT.......2600-4600 FT AGL UNTIL 2400, THEN 400-600 FT
AGL.
SMOKE DISPERSAL.....FAIR TO GOOD UNTIL 2400, THEN POOR.
THURSDAY
SKY/WEATHER.........MOSTLY SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....79-84.
24 HR TREND......6 DEGREES WARMER.
MIN HUMIDITY........14-20 PERCENT.
24 HR TREND......5 PERCENT DRIER.
20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH UNTIL 1200, THEN WEST
AROUND 10 MPH WITH GUSTS TO AROUND 25 MPH.
RIDGE TOP WINDS.....WEST 10 TO 15 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST 10 TO 15 MPH.
MIXING HEIGHT.......2400-4400 FT AGL UNTIL 1200, THEN 7600-9600 FT
AGL.
SMOKE DISPERSAL.....POOR TO FAIR UNTIL 1200, THEN VERY GOOD.
FORECAST DAYS 3 THROUGH 7...
THURSDAY NIGHT
MOSTLY CLEAR. LOWS AROUND 60. WINDS GENERALLY
LESS THAN 10 MPH.
FRIDAY
PARTLY CLOUDY. LOWS IN THE LOWER 60S. HIGHS IN THE
LOWER 80S. NORTH WINDS AROUND 10 MPH.
SATURDAY THROUGH SUNDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS. LOWS 57 TO 62. HIGHS 78 TO 83. WEST
WINDS AROUND 10 MPH.
MONDAY THROUGH TUESDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS. LOWS IN THE UPPER 50S. HIGHS IN THE
UPPER 70S.
WYZ281-192100-
JOHNSON COUNTY/CASPER BLM-
INCLUDING THE CITIES OF BUFFALO AND KAYCEE
1254 PM MDT TUE AUG 18 2026
THIS AFTERNOON
SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS THROUGH THE DAY. SOME
THUNDERSTORMS MAY BE SEVERE. CHANCE OF
PRECIPITATION 20 PERCENT.
CHANCE OF THUNDER...20 PERCENT.
MAX TEMPERATURE.....72-77.
24 HR TREND......5 DEGREES COOLER.
MIN HUMIDITY........33-39 PERCENT.
24 HR TREND......14 PERCENT WETTER.
20-FOOT WINDS.......NORTHWEST WINDS AROUND 15 MPH WITH GUSTS TO
AROUND 30 MPH.
RIDGE TOP WINDS.....NORTHWEST AROUND 20 MPH.
CHC OF WETTING RAIN.5 PERCENT.
TRANSPORT WINDS.....NORTHWEST AROUND 20 MPH.
MIXING HEIGHT.......5400-7400 FT AGL.
SMOKE DISPERSAL.....GOOD TO VERY GOOD.
TONIGHT
SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
CHANCE OF SHOWERS AND THUNDERSTORMS IN THE
EVENING, THEN SLIGHT CHANCE OF SHOWERS AFTER
MIDNIGHT. SOME THUNDERSTORMS MAY BE SEVERE
EARLY IN THE EVENING. SOME THUNDERSTORMS MAY BE
SEVERE EARLY IN THE EVENING. CHANCE OF
PRECIPITATION 50 PERCENT.
CHANCE OF THUNDER...30 PERCENT.
MIN TEMPERATURE.....52-57.
24 HR TREND......3 DEGREES COOLER.
MAX HUMIDITY........71-77 PERCENT.
24 HR TREND......8 PERCENT WETTER.
HUMIDITY RECOVERY...EXCELLENT.
20-FOOT WINDS.......NORTH WINDS AROUND 15 MPH WITH GUSTS TO AROUND
30 MPH UNTIL 2100, THEN SOUTHWEST WITH GUSTS TO
AROUND 30 MPH UNTIL 2400, THEN
DOWNSLOPE/DOWNVALLEY 4-7 MPH.
RIDGE TOP WINDS.....NORTHWEST AROUND 15 MPH UNTIL 2400, THEN
SOUTHWEST.
CHC OF WETTING RAIN.LESS THAN 5 PERCENT.
TRANSPORT WINDS.....NORTHWEST AROUND 15 MPH UNTIL 2400, THEN
SOUTHWEST.
MIXING HEIGHT.......1400-3400 FT AGL UNTIL 2400, THEN 400-600 FT
AGL.
SMOKE DISPERSAL.....POOR.
WEDNESDAY
SKY/WEATHER.........MOSTLY SUNNY THEN BECOMING PARTLY CLOUDY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....76-81.
24 HR TREND......4 DEGREES WARMER.
MIN HUMIDITY........21-27 PERCENT.
24 HR TREND......13 PERCENT DRIER.
20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH UNTIL 1200, THEN NORTH
AROUND 10 MPH. GUSTS UP TO 20 MPH.
RIDGE TOP WINDS.....SOUTHWEST AROUND 10 MPH UNTIL 1200, THEN NORTH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST 10 TO 15 MPH.
MIXING HEIGHT.......2200-4200 FT AGL UNTIL 1200, THEN 8000-10000 FT
AGL.
SMOKE DISPERSAL.....POOR TO FAIR UNTIL 1200, THEN GOOD TO VERY
GOOD.
WEDNESDAY NIGHT
SKY/WEATHER.........MOSTLY CLEAR.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....55-60.
24 HR TREND......2 DEGREES WARMER.
MAX HUMIDITY........50-56 PERCENT.
24 HR TREND......24 PERCENT DRIER.
HUMIDITY RECOVERY...MODERATE.
20-FOOT WINDS.......NORTH WINDS AROUND 10 MPH AND GUSTY UNTIL 2100,
THEN DOWNSLOPE/DOWNVALLEY 4-7 MPH.
RIDGE TOP WINDS.....NORTH AROUND 10 MPH UNTIL 2400, THEN SOUTHWEST.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....NORTH AROUND 10 MPH UNTIL 2400, THEN WEST.
MIXING HEIGHT.......3800-5800 FT AGL UNTIL 2400, THEN 400 FT AGL.
SMOKE DISPERSAL.....FAIR TO GOOD UNTIL 2400, THEN POOR.
THURSDAY
SKY/WEATHER.........MOSTLY SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....82-87.
24 HR TREND......7 DEGREES WARMER.
MIN HUMIDITY........17-23 PERCENT.
24 HR TREND......5 PERCENT DRIER.
20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH UNTIL 1500, THEN NORTH
AROUND 10 MPH. GUSTS UP TO 20 MPH.
RIDGE TOP WINDS.....SOUTHWEST AROUND 10 MPH UNTIL 1200, THEN NORTH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST 10 TO 15 MPH.
MIXING HEIGHT.......2200-4200 FT AGL UNTIL 1200, THEN 8600-10600 FT
AGL.
SMOKE DISPERSAL.....POOR TO FAIR UNTIL 1200, THEN GOOD TO VERY
GOOD.
FORECAST DAYS 3 THROUGH 7...
THURSDAY THROUGH FRIDAY
MOSTLY CLEAR. LOWS 59 TO 64. HIGHS
AROUND 90. WINDS GENERALLY LESS THAN 10 MPH.
SATURDAY THROUGH SUNDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS. LOWS 59 TO 64. HIGHS 86 TO 91.
NORTHWEST WINDS AROUND 10 MPH.
MONDAY THROUGH TUESDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS. LOWS IN THE UPPER 50S. HIGHS 84 TO 89.
WYZ282-192100-
SOUTH BIGHORN BASIN/WORLAND BLM-
INCLUDING THE CITIES OF TEN SLEEP, THERMOPOLIS, AND WORLAND
1254 PM MDT TUE AUG 18 2026
THIS AFTERNOON
SKY/WEATHER.........PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. SOME THUNDERSTORMS MAY BE
SEVERE. CHANCE OF PRECIPITATION 20 PERCENT.
CHANCE OF THUNDER...20 PERCENT.
MAX TEMPERATURE.....73-78.
24 HR TREND......1 DEGREE WARMER.
MIN HUMIDITY........31-37 PERCENT.
24 HR TREND......4 PERCENT WETTER.
20-FOOT WINDS.......SOUTHWEST WINDS AROUND 15 MPH WITH GUSTS TO
AROUND 25 MPH.
RIDGE TOP WINDS.....SOUTHWEST AROUND 20 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST AROUND 20 MPH.
MIXING HEIGHT.......5000-7000 FT AGL.
SMOKE DISPERSAL.....GOOD.
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY. CHANCE OF SHOWERS EARLY IN THE
EVENING. SLIGHT CHANCE OF THUNDERSTORMS IN THE
EVENING. SLIGHT CHANCE OF SHOWERS EARLY IN THE
EVENING. SOME THUNDERSTORMS MAY BE SEVERE EARLY
IN THE EVENING. CHANCE OF PRECIPITATION 50
PERCENT.
CHANCE OF THUNDER...20 PERCENT.
MIN TEMPERATURE.....50-55.
24 HR TREND......3 DEGREES COOLER.
MAX HUMIDITY........67-73 PERCENT.
24 HR TREND......5 PERCENT DRIER.
HUMIDITY RECOVERY...GOOD.
20-FOOT WINDS.......NORTH WINDS AROUND 15 MPH WITH GUSTS TO AROUND
30 MPH UNTIL 2100, THEN DOWNSLOPE/DOWNVALLEY
4-7 MPH.
RIDGE TOP WINDS.....NORTH AROUND 15 MPH UNTIL 2400, THEN SOUTH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....NORTHWEST AROUND 15 MPH UNTIL 2400, THEN SOUTH.
MIXING HEIGHT.......1400-3400 FT AGL UNTIL 2400, THEN 400-600 FT
AGL.
SMOKE DISPERSAL.....POOR.
WEDNESDAY
SKY/WEATHER.........MOSTLY SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....76-81.
24 HR TREND......3 DEGREES WARMER.
MIN HUMIDITY........18-24 PERCENT.
24 HR TREND......11 PERCENT DRIER.
20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH UNTIL 1200, THEN NORTH
AROUND 10 MPH. GUSTS UP TO 15 MPH.
RIDGE TOP WINDS.....SOUTH AROUND 10 MPH UNTIL 1200, THEN NORTH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....SOUTH AROUND 10 MPH UNTIL 1200, THEN NORTHWEST.
MIXING HEIGHT.......1000-3000 FT AGL UNTIL 1200, THEN 5400-7400 FT
AGL.
SMOKE DISPERSAL.....POOR UNTIL 1200, THEN GOOD.
WEDNESDAY NIGHT
SKY/WEATHER.........MOSTLY CLEAR.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....54-59.
24 HR TREND......3 DEGREES WARMER.
MAX HUMIDITY........42-48 PERCENT.
24 HR TREND......26 PERCENT DRIER.
HUMIDITY RECOVERY...MODERATE.
20-FOOT WINDS.......NORTHEAST WINDS AROUND 10 MPH UNTIL 2100, THEN
DOWNSLOPE/DOWNVALLEY 4-7 MPH. GUSTS UP TO 15
MPH.
RIDGE TOP WINDS.....NORTHEAST AROUND 10 MPH UNTIL 2400, THEN SOUTH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....NORTHEAST AROUND 10 MPH UNTIL 2400, THEN
SOUTHWEST.
MIXING HEIGHT.......2800-4800 FT AGL UNTIL 2400, THEN 400 FT AGL.
SMOKE DISPERSAL.....POOR TO FAIR UNTIL 2400, THEN POOR.
THURSDAY
SKY/WEATHER.........MOSTLY SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....82-87.
24 HR TREND......6 DEGREES WARMER.
MIN HUMIDITY........16-22 PERCENT.
24 HR TREND......4 PERCENT DRIER.
20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH. GUSTS UP TO 15 MPH.
RIDGE TOP WINDS.....SOUTH AROUND 10 MPH UNTIL 1200, THEN NORTHEAST.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....SOUTHWEST AROUND 10 MPH UNTIL 1200, THEN WEST.
MIXING HEIGHT.......1400-3400 FT AGL UNTIL 1200, THEN 6600-8600 FT
AGL.
SMOKE DISPERSAL.....POOR UNTIL 1200, THEN GOOD.
FORECAST DAYS 3 THROUGH 7...
THURSDAY NIGHT
MOSTLY CLEAR. LOWS IN THE LOWER 60S. WINDS
GENERALLY LESS THAN 10 MPH.
FRIDAY
PARTLY CLOUDY. LOWS IN THE MID 60S. HIGHS IN THE LOWER
90S. WINDS GENERALLY LESS THAN 10 MPH.
SATURDAY THROUGH SUNDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS. LOWS IN THE LOWER 60S. HIGHS 86 TO 91.
WINDS GENERALLY LESS THAN 10 MPH.
MONDAY THROUGH TUESDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS. LOWS IN THE LOWER 60S. HIGHS IN THE
MID 80S.
WYZ275-192100-
NORTH BIGHORN BASIN/WORLAND BLM-
INCLUDING THE CITIES OF GREYBULL, LOVELL, AND POWELL
1254 PM MDT TUE AUG 18 2026
THIS AFTERNOON
SKY/WEATHER.........PARTLY CLOUDY. CHANCE OF SHOWERS AND
THUNDERSTORMS. SOME THUNDERSTORMS MAY BE
SEVERE. CHANCE OF PRECIPITATION 50 PERCENT.
CHANCE OF THUNDER...40 PERCENT.
MAX TEMPERATURE.....70-75.
24 HR TREND......2 DEGREES COOLER.
MIN HUMIDITY........32-38 PERCENT.
24 HR TREND......6 PERCENT WETTER.
20-FOOT WINDS.......NORTHWEST WINDS AROUND 15 MPH WITH GUSTS TO
AROUND 35 MPH.
RIDGE TOP WINDS.....NORTHWEST AROUND 20 MPH.
CHC OF WETTING RAIN.5 PERCENT.
TRANSPORT WINDS.....NORTHWEST AROUND 20 MPH.
MIXING HEIGHT.......4600-6600 FT AGL.
SMOKE DISPERSAL.....GOOD.
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY. CHANCE OF SHOWERS EARLY IN THE
EVENING. SLIGHT CHANCE OF THUNDERSTORMS EARLY
IN THE EVENING. SLIGHT CHANCE OF SHOWERS IN THE
EVENING. SOME THUNDERSTORMS MAY BE SEVERE.
CHANCE OF PRECIPITATION 50 PERCENT.
CHANCE OF THUNDER...20 PERCENT.
MIN TEMPERATURE.....50-55.
24 HR TREND......3 DEGREES COOLER.
MAX HUMIDITY........68-74 PERCENT.
24 HR TREND......6 PERCENT DRIER.
HUMIDITY RECOVERY...GOOD.
20-FOOT WINDS.......NORTHWEST WINDS AROUND 10 MPH AND GUSTY UNTIL
2100, THEN SOUTHWEST AND GUSTY UNTIL 2400, THEN
DOWNSLOPE/DOWNVALLEY 4-7 MPH.
RIDGE TOP WINDS.....WEST AROUND 15 MPH UNTIL 2400, THEN SOUTHEAST.
CHC OF WETTING RAIN.LESS THAN 5 PERCENT.
TRANSPORT WINDS.....NORTHWEST AROUND 15 MPH UNTIL 2400, THEN
SOUTHEAST.
MIXING HEIGHT.......800-2800 FT AGL UNTIL 2400, THEN 400-600 FT
AGL.
SMOKE DISPERSAL.....POOR.
WEDNESDAY
SKY/WEATHER.........MOSTLY SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....74-79.
24 HR TREND......4 DEGREES WARMER.
MIN HUMIDITY........19-25 PERCENT.
24 HR TREND......11 PERCENT DRIER.
20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH UNTIL 1500, THEN NORTH
AROUND 10 MPH. GUSTS UP TO 15 MPH.
RIDGE TOP WINDS.....SOUTHEAST AROUND 10 MPH UNTIL 1200, THEN NORTH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....SOUTH AROUND 10 MPH UNTIL 1200, THEN NORTHWEST.
MIXING HEIGHT.......1000-3000 FT AGL UNTIL 1200, THEN 5400-7400 FT
AGL.
SMOKE DISPERSAL.....POOR TO FAIR.
WEDNESDAY NIGHT
SKY/WEATHER.........MOSTLY CLEAR.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....54-59.
24 HR TREND......3 DEGREES WARMER.
MAX HUMIDITY........45-51 PERCENT.
24 HR TREND......24 PERCENT DRIER.
HUMIDITY RECOVERY...MODERATE.
20-FOOT WINDS.......NORTH WINDS AROUND 10 MPH UNTIL 2100, THEN
DOWNSLOPE/DOWNVALLEY 4-7 MPH. GUSTS UP TO 15
MPH.
RIDGE TOP WINDS.....NORTH AROUND 10 MPH UNTIL 2400, THEN WEST.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....NORTHWEST AROUND 10 MPH.
MIXING HEIGHT.......2600-4600 FT AGL UNTIL 2400, THEN 400 FT AGL.
SMOKE DISPERSAL.....POOR.
THURSDAY
SKY/WEATHER.........MOSTLY SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....79-84.
24 HR TREND......6 DEGREES WARMER.
MIN HUMIDITY........15-21 PERCENT.
24 HR TREND......4 PERCENT DRIER.
20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH. GUSTS UP TO 20 MPH.
RIDGE TOP WINDS.....SOUTH AROUND 10 MPH UNTIL 1200, THEN EAST.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....SOUTH AROUND 10 MPH UNTIL 1200, THEN WEST.
MIXING HEIGHT.......1200-3200 FT AGL UNTIL 1200, THEN 5800-7800 FT
AGL.
SMOKE DISPERSAL.....POOR UNTIL 1200, THEN FAIR TO GOOD.
FORECAST DAYS 3 THROUGH 7...
THURSDAY NIGHT
MOSTLY CLEAR. LOWS IN THE LOWER 60S. WINDS
GENERALLY LESS THAN 10 MPH.
FRIDAY
PARTLY CLOUDY. LOWS IN THE LOWER 60S. HIGHS AROUND 90.
WINDS GENERALLY LESS THAN 10 MPH.
SATURDAY THROUGH SUNDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS. LOWS 58 TO 63. HIGHS 86 TO 91. WINDS
GENERALLY LESS THAN 10 MPH.
MONDAY THROUGH TUESDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS. LOWS AROUND 60. HIGHS IN THE MID 80S.
WYZ276-192100-
CODY FOOTHILLS-
INCLUDING THE CITIES OF CLARK, CODY, AND MEETEETSE
1254 PM MDT TUE AUG 18 2026
THIS AFTERNOON
SKY/WEATHER.........PARTLY CLOUDY. CHANCE OF SHOWERS AND
THUNDERSTORMS. SOME THUNDERSTORMS MAY BE
SEVERE. CHANCE OF PRECIPITATION 50 PERCENT.
CHANCE OF THUNDER...40 PERCENT.
MAX TEMPERATURE.....72-77.
24 HR TREND......3 DEGREES COOLER.
MIN HUMIDITY........35-41 PERCENT.
24 HR TREND......10 PERCENT WETTER.
20-FOOT WINDS.......NORTH WINDS AROUND 15 MPH WITH GUSTS TO AROUND
30 MPH.
RIDGE TOP WINDS.....NORTH AROUND 20 MPH.
CHC OF WETTING RAIN.10 PERCENT.
TRANSPORT WINDS.....NORTHWEST AROUND 20 MPH.
MIXING HEIGHT.......4000-6000 FT AGL.
SMOKE DISPERSAL.....GOOD.
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY. SLIGHT CHANCE OF THUNDERSTORMS
EARLY IN THE EVENING. CHANCE OF SHOWERS EARLY
IN THE EVENING. SLIGHT CHANCE OF SHOWERS LATE
IN THE EVENING. SOME THUNDERSTORMS MAY BE
SEVERE. CHANCE OF PRECIPITATION 50 PERCENT.
CHANCE OF THUNDER...20 PERCENT.
MIN TEMPERATURE.....52-57.
24 HR TREND......3 DEGREES COOLER.
MAX HUMIDITY........62-68 PERCENT.
24 HR TREND......5 PERCENT DRIER.
HUMIDITY RECOVERY...GOOD.
20-FOOT WINDS.......NORTHWEST WINDS AROUND 10 MPH UNTIL 2100, THEN
SOUTHWEST. GUSTS UP TO 20 MPH.
RIDGE TOP WINDS.....WEST AROUND 15 MPH.
CHC OF WETTING RAIN.LESS THAN 5 PERCENT.
TRANSPORT WINDS.....WEST AROUND 15 MPH.
MIXING HEIGHT.......600-2600 FT AGL.
SMOKE DISPERSAL.....POOR.
WEDNESDAY
SKY/WEATHER.........MOSTLY SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....77-82.
24 HR TREND......4 DEGREES WARMER.
MIN HUMIDITY........25-31 PERCENT.
24 HR TREND......13 PERCENT DRIER.
20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH UNTIL 1200, THEN
NORTHEAST AROUND 10 MPH. GUSTS UP TO 20 MPH.
RIDGE TOP WINDS.....WEST AROUND 10 MPH UNTIL 1200, THEN NORTHEAST.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST 10 TO 15 MPH.
MIXING HEIGHT.......1800-3800 FT AGL UNTIL 1200, THEN 6400-8400 FT
AGL.
SMOKE DISPERSAL.....POOR TO FAIR UNTIL 1200, THEN GOOD TO VERY
GOOD.
WEDNESDAY NIGHT
SKY/WEATHER.........MOSTLY CLEAR.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....55-60.
24 HR TREND......3 DEGREES WARMER.
MAX HUMIDITY........41-47 PERCENT.
24 HR TREND......21 PERCENT DRIER.
HUMIDITY RECOVERY...MODERATE.
20-FOOT WINDS.......NORTHEAST WINDS AROUND 10 MPH UNTIL 2100, THEN
DOWNSLOPE/DOWNVALLEY 4-7 MPH UNTIL 2400, THEN
SOUTHWEST AROUND 10 MPH. GUSTS UP TO 20 MPH.
RIDGE TOP WINDS.....NORTH AROUND 10 MPH UNTIL 2400, THEN SOUTHWEST.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....NORTH AROUND 10 MPH UNTIL 2400, THEN WEST.
MIXING HEIGHT.......2800-4800 FT AGL UNTIL 2400, THEN 400-600 FT
AGL.
SMOKE DISPERSAL.....FAIR TO GOOD UNTIL 2400, THEN POOR.
THURSDAY
SKY/WEATHER.........MOSTLY SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....82-87.
24 HR TREND......5 DEGREES WARMER.
MIN HUMIDITY........24-30 PERCENT.
24 HR TREND......4 PERCENT DRIER.
20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH UNTIL 1200, THEN
NORTHEAST AROUND 10 MPH. GUSTS UP TO 20 MPH.
RIDGE TOP WINDS.....SOUTHWEST AROUND 10 MPH UNTIL 1200, THEN
NORTHEAST.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST 10 TO 15 MPH.
MIXING HEIGHT.......1600-3600 FT AGL UNTIL 1200, THEN 6200-8200 FT
AGL.
SMOKE DISPERSAL.....POOR UNTIL 1200, THEN GOOD TO VERY GOOD.
FORECAST DAYS 3 THROUGH 7...
THURSDAY THROUGH FRIDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS. LOWS 59 TO 64. HIGHS IN THE MID 80S.
WINDS GENERALLY LESS THAN 10 MPH.
SATURDAY
MOSTLY CLOUDY. CHANCE OF SHOWERS AND THUNDERSTORMS.
LOWS AROUND 60. HIGHS IN THE LOWER 80S. WEST WINDS AROUND 10 MPH.
SUNDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS IN THE UPPER 50S. HIGHS IN THE LOWER 80S.
WEST WINDS AROUND 10 MPH.
MONDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS IN THE UPPER 50S. HIGHS AROUND 80.
TUESDAY
PARTLY CLOUDY. CHANCE OF SHOWERS AND THUNDERSTORMS IN
THE AFTERNOON. HIGHS IN THE LOWER 80S.
WYZ287-192100-
OWL CREEK MOUNTAINS-
1254 PM MDT TUE AUG 18 2026
THIS AFTERNOON
SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF SHOWERS AND
THUNDERSTORMS. SOME THUNDERSTORMS MAY BE
SEVERE. CHANCE OF PRECIPITATION 50 PERCENT.
CHANCE OF THUNDER...40 PERCENT.
MAX TEMPERATURE.....70-75.
24 HR TREND......2 DEGREES WARMER.
MIN HUMIDITY........36-42 PERCENT.
24 HR TREND......4 PERCENT WETTER.
20-FOOT WINDS.......SOUTHWEST WINDS AROUND 15 MPH WITH GUSTS TO
AROUND 30 MPH.
RIDGE TOP WINDS.....SOUTHWEST AROUND 20 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST AROUND 20 MPH.
MIXING HEIGHT.......3600-4800 FT AGL.
SMOKE DISPERSAL.....GOOD.
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY. CHANCE OF SHOWERS AND
THUNDERSTORMS EARLY IN THE EVENING, THEN SLIGHT
CHANCE OF SHOWERS AND THUNDERSTORMS EARLY IN
THE EVENING. SOME THUNDERSTORMS MAY BE SEVERE
EARLY IN THE EVENING. CHANCE OF PRECIPITATION
40 PERCENT.
CHANCE OF THUNDER...30 PERCENT.
MIN TEMPERATURE.....51-56.
24 HR TREND......2 DEGREES COOLER.
MAX HUMIDITY........64-70 PERCENT.
24 HR TREND......6 PERCENT DRIER.
HUMIDITY RECOVERY...GOOD.
20-FOOT WINDS.......NORTHWEST WINDS 10 TO 15 MPH WITH GUSTS TO
AROUND 30 MPH UNTIL 2400, THEN SOUTHWEST WITH
GUSTS TO AROUND 15 MPH.
RIDGE TOP WINDS.....NORTHWEST AROUND 15 MPH UNTIL 2400, THEN
SOUTHWEST.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....NORTH AROUND 15 MPH UNTIL 2400, THEN SOUTHWEST.
MIXING HEIGHT.......600-2600 FT AGL UNTIL 2400, THEN 400-600 FT
AGL.
SMOKE DISPERSAL.....POOR.
WEDNESDAY
SKY/WEATHER.........MOSTLY SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....73-78.
24 HR TREND......4 DEGREES WARMER.
MIN HUMIDITY........23-29 PERCENT.
24 HR TREND......13 PERCENT DRIER.
20-FOOT WINDS.......SOUTHWEST WINDS AROUND 10 MPH UNTIL 0900, THEN
UPSLOPE/UPVALLEY 5-9 MPH UNTIL 1200, THEN EAST
AROUND 10 MPH. GUSTS UP TO 15 MPH.
RIDGE TOP WINDS.....SOUTHWEST AROUND 10 MPH UNTIL 1200, THEN EAST.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....NORTHWEST 10 TO 15 MPH.
MIXING HEIGHT.......1600-3600 FT AGL UNTIL 1200, THEN 5800-7800 FT
AGL.
SMOKE DISPERSAL.....POOR UNTIL 1200, THEN GOOD.
WEDNESDAY NIGHT
SKY/WEATHER.........MOSTLY CLEAR.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....54-59.
24 HR TREND......4 DEGREES WARMER.
MAX HUMIDITY........36-42 PERCENT.
24 HR TREND......26 PERCENT DRIER.
HUMIDITY RECOVERY...POOR.
20-FOOT WINDS.......NORTHEAST WINDS AROUND 10 MPH UNTIL 2100, THEN
DOWNSLOPE/DOWNVALLEY 4-7 MPH. GUSTS UP TO 15
MPH.
RIDGE TOP WINDS.....NORTH AROUND 15 MPH UNTIL 2400, THEN WEST.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....NORTHEAST AROUND 15 MPH UNTIL 2400, THEN WEST.
MIXING HEIGHT.......2400-4400 FT AGL UNTIL 2400, THEN 400-600 FT
AGL.
SMOKE DISPERSAL.....POOR TO FAIR.
THURSDAY
SKY/WEATHER.........MOSTLY SUNNY.
CHANCE OF THUNDER...10 PERCENT.
MAX TEMPERATURE.....78-83.
24 HR TREND......5 DEGREES WARMER.
MIN HUMIDITY........19-25 PERCENT.
24 HR TREND......4 PERCENT DRIER.
20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH UNTIL 1200, THEN
SOUTHEAST AROUND 10 MPH UNTIL 1500, THEN
NORTHEAST. GUSTS UP TO 20 MPH.
RIDGE TOP WINDS.....SOUTHWEST AROUND 10 MPH UNTIL 1200, THEN EAST.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST 10 TO 15 MPH.
MIXING HEIGHT.......1400-3400 FT AGL UNTIL 1200, THEN 6800-8800 FT
AGL.
SMOKE DISPERSAL.....POOR UNTIL 1200, THEN GOOD TO VERY GOOD.
FORECAST DAYS 3 THROUGH 7...
THURSDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 60S. WINDS
GENERALLY LESS THAN 10 MPH.
FRIDAY THROUGH SATURDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS. LOWS 61 TO 66. HIGHS IN THE LOWER 80S.
WEST WINDS AROUND 10 MPH.
SUNDAY
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND THUNDERSTORMS.
LOWS IN THE UPPER 50S. HIGHS AROUND 80. WEST WINDS AROUND 10 MPH.
MONDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS IN THE UPPER 50S. HIGHS IN THE UPPER 70S.
TUESDAY
PARTLY CLOUDY. CHANCE OF SHOWERS AND THUNDERSTORMS IN
THE AFTERNOON. HIGHS IN THE UPPER 70S.
WYZ286-192100-
ABSAROKA MOUNTAINS/NORTH SHOSHONE NF-
INCLUDING THE CITY OF PAHASKA
1254 PM MDT TUE AUG 18 2026
THIS AFTERNOON
SKY/WEATHER.........PARTLY CLOUDY. CHANCE OF SHOWERS AND
THUNDERSTORMS. SOME THUNDERSTORMS MAY BE
SEVERE. CHANCE OF PRECIPITATION 50 PERCENT.
CHANCE OF THUNDER...40 PERCENT.
MAX TEMPERATURE.....65-70.
24 HR TREND......1 DEGREE COOLER.
MIN HUMIDITY........38-44 PERCENT.
24 HR TREND......1 PERCENT WETTER.
20-FOOT WINDS.......WEST WINDS AROUND 15 MPH WITH GUSTS TO AROUND
30 MPH.
RIDGE TOP WINDS.....WEST AROUND 20 MPH.
CHC OF WETTING RAIN.5 PERCENT.
TRANSPORT WINDS.....WEST AROUND 20 MPH.
MIXING HEIGHT.......5200-7200 FT AGL.
SMOKE DISPERSAL.....VERY GOOD.
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY. CHANCE OF SHOWERS AND SLIGHT
CHANCE OF THUNDERSTORMS EARLY IN THE EVENING,
THEN SLIGHT CHANCE OF SHOWERS LATE IN THE
EVENING. SOME THUNDERSTORMS MAY BE SEVERE.
CHANCE OF PRECIPITATION 50 PERCENT.
CHANCE OF THUNDER...20 PERCENT.
MIN TEMPERATURE.....46-51.
24 HR TREND......UNCHANGED.
MAX HUMIDITY........70-76 PERCENT.
24 HR TREND......15 PERCENT DRIER.
HUMIDITY RECOVERY...EXCELLENT.
20-FOOT WINDS.......WEST WINDS 10 TO 15 MPH. GUSTS UP TO 25 MPH
UNTIL 2400, THEN 15 MPH.
RIDGE TOP WINDS.....WEST AROUND 15 MPH.
CHC OF WETTING RAIN.LESS THAN 5 PERCENT.
TRANSPORT WINDS.....WEST AROUND 15 MPH.
MIXING HEIGHT.......1800-3800 FT AGL UNTIL 2400, THEN 600 FT AGL.
SMOKE DISPERSAL.....POOR TO FAIR.
WEDNESDAY
SKY/WEATHER.........MOSTLY SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....70-75.
24 HR TREND......5 DEGREES WARMER.
MIN HUMIDITY........21-27 PERCENT.
24 HR TREND......15 PERCENT DRIER.
20-FOOT WINDS.......WEST WINDS 10 TO 15 MPH WITH GUSTS TO AROUND 25
MPH.
RIDGE TOP WINDS.....WEST 15 TO 20 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST 15 TO 20 MPH.
MIXING HEIGHT.......2200-4200 FT AGL UNTIL 1200, THEN 6400-8400 FT
AGL.
SMOKE DISPERSAL.....POOR TO FAIR UNTIL 1200, THEN VERY GOOD.
WEDNESDAY NIGHT
SKY/WEATHER.........MOSTLY CLEAR.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....48-53.
24 HR TREND......3 DEGREES WARMER.
MAX HUMIDITY........49-55 PERCENT.
24 HR TREND......23 PERCENT DRIER.
HUMIDITY RECOVERY...MODERATE.
20-FOOT WINDS.......WEST WINDS AROUND 10 MPH. GUSTS UP TO 25 MPH
UNTIL 2400, THEN 15 MPH.
RIDGE TOP WINDS.....WEST AROUND 15 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST AROUND 15 MPH.
MIXING HEIGHT.......3200-5200 FT AGL UNTIL 2400, THEN 400-600 FT
AGL.
SMOKE DISPERSAL.....FAIR TO GOOD UNTIL 2400, THEN POOR.
THURSDAY
SKY/WEATHER.........MOSTLY SUNNY. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE AFTERNOON. CHANCE OF
PRECIPITATION 20 PERCENT.
CHANCE OF THUNDER...10 PERCENT.
MAX TEMPERATURE.....74-79.
24 HR TREND......4 DEGREES WARMER.
MIN HUMIDITY........22-28 PERCENT.
24 HR TREND......UNCHANGED.
20-FOOT WINDS.......WEST WINDS 10 TO 15 MPH. GUSTS UP TO 20 MPH
UNTIL 1200, THEN 30 MPH.
RIDGE TOP WINDS.....WEST 15 TO 20 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST 15 TO 20 MPH.
MIXING HEIGHT.......2200-4200 FT AGL UNTIL 1200, THEN 8000-10000 FT
AGL.
SMOKE DISPERSAL.....POOR TO FAIR UNTIL 1200, THEN VERY GOOD TO
EXCELLENT.
FORECAST DAYS 3 THROUGH 7...
THURSDAY NIGHT
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE EVENING. LOWS IN THE LOWER 50S. WINDS
GENERALLY LESS THAN 10 MPH.
FRIDAY
PARTLY CLOUDY. CHANCE OF SHOWERS AND THUNDERSTORMS.
LOWS IN THE MID 50S. HIGHS IN THE MID 70S. WINDS GENERALLY LESS
THAN 10 MPH.
SATURDAY
MOSTLY CLOUDY. CHANCE OF SHOWERS AND THUNDERSTORMS.
LOWS IN THE LOWER 50S. HIGHS IN THE LOWER 70S. WEST WINDS AROUND
10 MPH.
SUNDAY
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND THUNDERSTORMS.
LOWS AROUND 50. HIGHS IN THE UPPER 60S. WEST WINDS AROUND 10 MPH.
MONDAY
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND THUNDERSTORMS.
LOWS AROUND 50. HIGHS IN THE UPPER 60S.
TUESDAY
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS IN THE
MORNING, THEN CHANCE OF SHOWERS AND THUNDERSTORMS IN THE
AFTERNOON. HIGHS IN THE UPPER 60S.
WYZ140-192100-
YELLOWSTONE NATIONAL PARK-
INCLUDING THE CITIES OF LAKE, MAMMOTH, AND OLD FAITHFUL
1254 PM MDT TUE AUG 18 2026
THIS AFTERNOON
SKY/WEATHER.........PARTLY CLOUDY. CHANCE OF SHOWERS AND
THUNDERSTORMS. SOME THUNDERSTORMS MAY BE
SEVERE. CHANCE OF PRECIPITATION 50 PERCENT.
CHANCE OF THUNDER...40 PERCENT.
MAX TEMPERATURE.....66-71.
24 HR TREND......1 DEGREE COOLER.
MIN HUMIDITY........43-49 PERCENT.
24 HR TREND......2 PERCENT DRIER.
20-FOOT WINDS.......WEST WINDS AROUND 15 MPH WITH GUSTS TO AROUND
30 MPH.
RIDGE TOP WINDS.....WEST AROUND 20 MPH.
CHC OF WETTING RAIN.10 PERCENT.
TRANSPORT WINDS.....WEST AROUND 20 MPH.
MIXING HEIGHT.......5600-7400 FT AGL.
SMOKE DISPERSAL.....VERY GOOD.
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY. CHANCE OF SHOWERS EARLY IN THE
EVENING. SLIGHT CHANCE OF THUNDERSTORMS EARLY
IN THE EVENING. SLIGHT CHANCE OF SHOWERS EARLY
IN THE EVENING. SOME THUNDERSTORMS MAY BE
SEVERE. CHANCE OF PRECIPITATION 50 PERCENT.
CHANCE OF THUNDER...20 PERCENT.
MIN TEMPERATURE.....41-46.
24 HR TREND......2 DEGREES COOLER.
MAX HUMIDITY........76-82 PERCENT.
24 HR TREND......7 PERCENT DRIER.
HUMIDITY RECOVERY...EXCELLENT.
20-FOOT WINDS.......NORTHWEST WINDS AROUND 10 MPH WITH GUSTS TO
AROUND 25 MPH UNTIL 2100, THEN
DOWNSLOPE/DOWNVALLEY 4-7 MPH.
RIDGE TOP WINDS.....WEST AROUND 10 MPH UNTIL 2400, THEN SOUTHWEST.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....NORTH AROUND 10 MPH UNTIL 2400, THEN SOUTHEAST.
MIXING HEIGHT.......2000-4000 FT AGL UNTIL 2400, THEN 600 FT AGL.
SMOKE DISPERSAL.....POOR TO FAIR.
WEDNESDAY
SKY/WEATHER.........MOSTLY SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....71-76.
24 HR TREND......4 DEGREES WARMER.
MIN HUMIDITY........27-33 PERCENT.
24 HR TREND......16 PERCENT DRIER.
20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH UNTIL 1200, THEN WEST
10 TO 15 MPH. GUSTS UP TO 20 MPH.
RIDGE TOP WINDS.....WEST 10 TO 15 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST 10 TO 15 MPH.
MIXING HEIGHT.......2000-4000 FT AGL UNTIL 1200, THEN 6400-8400 FT
AGL.
SMOKE DISPERSAL.....POOR TO FAIR UNTIL 1200, THEN GOOD TO VERY
GOOD.
WEDNESDAY NIGHT
SKY/WEATHER.........MOSTLY CLEAR.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....43-48.
24 HR TREND......2 DEGREES WARMER.
MAX HUMIDITY........64-70 PERCENT.
24 HR TREND......20 PERCENT DRIER.
HUMIDITY RECOVERY...GOOD.
20-FOOT WINDS.......WEST WINDS AROUND 10 MPH AND GUSTY UNTIL 2100,
THEN DOWNSLOPE/DOWNVALLEY 4-7 MPH.
RIDGE TOP WINDS.....SOUTHWEST AROUND 10 MPH UNTIL 2400, THEN
SOUTHEAST.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST AROUND 10 MPH UNTIL 2400, THEN SOUTH.
MIXING HEIGHT.......3400-5400 FT AGL UNTIL 2400, THEN 400-600 FT
AGL.
SMOKE DISPERSAL.....FAIR TO GOOD UNTIL 2400, THEN POOR.
THURSDAY
SKY/WEATHER.........MOSTLY SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....76-81.
24 HR TREND......5 DEGREES WARMER.
MIN HUMIDITY........27-33 PERCENT.
24 HR TREND......1 PERCENT DRIER.
20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH UNTIL 1500, THEN WEST
AROUND 10 MPH WITH GUSTS TO AROUND 25 MPH.
RIDGE TOP WINDS.....SOUTH AROUND 10 MPH UNTIL 1200, THEN WEST.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....SOUTHWEST AROUND 10 MPH UNTIL 1200, THEN WEST
AROUND 20 MPH.
MIXING HEIGHT.......2000-4000 FT AGL UNTIL 1200, THEN 8000-10000 FT
AGL.
SMOKE DISPERSAL.....POOR TO FAIR UNTIL 1200, THEN VERY GOOD.
FORECAST DAYS 3 THROUGH 7...
THURSDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 40S. WINDS
GENERALLY LESS THAN 10 MPH.
FRIDAY
PARTLY CLOUDY. CHANCE OF SHOWERS AND SLIGHT CHANCE OF
THUNDERSTORMS. LOWS IN THE LOWER 50S. HIGHS IN THE UPPER 70S.
WINDS GENERALLY LESS THAN 10 MPH.
SATURDAY
MOSTLY CLOUDY. CHANCE OF SHOWERS AND THUNDERSTORMS.
LOWS IN THE UPPER 40S. HIGHS IN THE LOWER 70S. WINDS GENERALLY
LESS THAN 10 MPH.
SUNDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS IN THE MID 40S. HIGHS IN THE UPPER 60S. WINDS
GENERALLY LESS THAN 10 MPH.
MONDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS IN THE MID 40S. HIGHS AROUND 70.
TUESDAY
PARTLY CLOUDY. CHANCE OF SHOWERS AND THUNDERSTORMS IN
THE AFTERNOON. HIGHS AROUND 70.
WYZ415-192100-
NORTH ZONE BRIDGER TETON NF AND GRAND TETON NP-
INCLUDING THE CITIES OF JACKSON AND MORAN
1254 PM MDT TUE AUG 18 2026
THIS AFTERNOON
SKY/WEATHER.........PARTLY CLOUDY. CHANCE OF SHOWERS AND
THUNDERSTORMS. SOME THUNDERSTORMS MAY BE
SEVERE. CHANCE OF PRECIPITATION 50 PERCENT.
CHANCE OF THUNDER...30 PERCENT.
MAX TEMPERATURE.....66-71.
24 HR TREND......1 DEGREE COOLER.
MIN HUMIDITY........44-50 PERCENT.
24 HR TREND......2 PERCENT DRIER.
20-FOOT WINDS.......WEST WINDS AROUND 15 MPH WITH GUSTS TO AROUND
25 MPH.
RIDGE TOP WINDS.....WEST AROUND 15 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST AROUND 20 MPH.
MIXING HEIGHT.......6200-7000 FT AGL.
SMOKE DISPERSAL.....GOOD TO VERY GOOD.
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY. CHANCE OF SHOWERS EARLY IN THE
EVENING. SLIGHT CHANCE OF THUNDERSTORMS EARLY
IN THE EVENING. SLIGHT CHANCE OF SHOWERS IN THE
EVENING. SOME THUNDERSTORMS MAY BE SEVERE.
CHANCE OF PRECIPITATION 50 PERCENT.
CHANCE OF THUNDER...20 PERCENT.
MIN TEMPERATURE.....42-47.
24 HR TREND......1 DEGREE COOLER.
MAX HUMIDITY........73-79 PERCENT.
24 HR TREND......13 PERCENT DRIER.
HUMIDITY RECOVERY...EXCELLENT.
20-FOOT WINDS.......WEST WINDS AROUND 10 MPH WITH GUSTS TO AROUND
25 MPH UNTIL 2100, THEN DOWNSLOPE/DOWNVALLEY
4-7 MPH.
RIDGE TOP WINDS.....WEST AROUND 15 MPH UNTIL 2400, THEN EAST.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST AROUND 15 MPH UNTIL 2400, THEN SOUTHEAST.
MIXING HEIGHT.......2200-4200 FT AGL UNTIL 2400, THEN 600 FT AGL.
SMOKE DISPERSAL.....FAIR TO GOOD UNTIL 2400, THEN POOR.
WEDNESDAY
SKY/WEATHER.........MOSTLY SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....70-75.
24 HR TREND......5 DEGREES WARMER.
MIN HUMIDITY........30-36 PERCENT.
24 HR TREND......16 PERCENT DRIER.
20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH UNTIL 1200, THEN WEST
10 TO 15 MPH. GUSTS UP TO 20 MPH.
RIDGE TOP WINDS.....WEST 10 TO 15 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST 10 TO 15 MPH.
MIXING HEIGHT.......2000-4000 FT AGL UNTIL 1200, THEN 6200-8000 FT
AGL.
SMOKE DISPERSAL.....POOR TO FAIR UNTIL 1200, THEN GOOD TO VERY
GOOD.
WEDNESDAY NIGHT
SKY/WEATHER.........MOSTLY CLEAR.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....44-49.
24 HR TREND......2 DEGREES WARMER.
MAX HUMIDITY........58-64 PERCENT.
24 HR TREND......24 PERCENT DRIER.
HUMIDITY RECOVERY...GOOD.
20-FOOT WINDS.......WEST WINDS AROUND 10 MPH AND GUSTY UNTIL 2100,
THEN DOWNSLOPE/DOWNVALLEY 4-7 MPH.
RIDGE TOP WINDS.....WEST AROUND 10 MPH UNTIL 2400, THEN EAST.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST AROUND 10 MPH UNTIL 2400, THEN SOUTHEAST.
MIXING HEIGHT.......2600-4600 FT AGL UNTIL 2400, THEN 400-600 FT
AGL.
SMOKE DISPERSAL.....POOR TO FAIR UNTIL 2400, THEN POOR.
THURSDAY
SKY/WEATHER.........MOSTLY SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....76-81.
24 HR TREND......5 DEGREES WARMER.
MIN HUMIDITY........31-37 PERCENT.
24 HR TREND......1 PERCENT WETTER.
20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH UNTIL 1500, THEN WEST
AROUND 10 MPH. GUSTS UP TO 20 MPH.
RIDGE TOP WINDS.....SOUTH AROUND 10 MPH UNTIL 1200, THEN WEST.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....SOUTH AROUND 10 MPH UNTIL 1200, THEN WEST.
MIXING HEIGHT.......2000-4000 FT AGL UNTIL 1200, THEN 7400-9400 FT
AGL.
SMOKE DISPERSAL.....POOR TO FAIR UNTIL 1200, THEN VERY GOOD.
FORECAST DAYS 3 THROUGH 7...
THURSDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 50S. WINDS
GENERALLY LESS THAN 10 MPH.
FRIDAY
PARTLY CLOUDY. CHANCE OF SHOWERS AND SLIGHT CHANCE OF
THUNDERSTORMS. LOWS IN THE LOWER 50S. HIGHS IN THE UPPER 70S.
WINDS GENERALLY LESS THAN 10 MPH.
SATURDAY
MOSTLY CLOUDY. CHANCE OF SHOWERS AND THUNDERSTORMS.
LOWS IN THE UPPER 40S. HIGHS IN THE LOWER 70S. WINDS GENERALLY
LESS THAN 10 MPH.
SUNDAY
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND THUNDERSTORMS.
LOWS IN THE UPPER 40S. HIGHS IN THE UPPER 60S. WINDS GENERALLY
LESS THAN 10 MPH.
MONDAY
PARTLY CLOUDY. CHANCE OF SHOWERS AND THUNDERSTORMS.
LOWS IN THE UPPER 40S. HIGHS AROUND 70.
TUESDAY
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS IN THE
MORNING, THEN CHANCE OF SHOWERS AND THUNDERSTORMS IN THE
AFTERNOON. HIGHS IN THE UPPER 60S.
WYZ416-192100-
WEST WIND RIVER MOUNTAINS/EAST ZONE BRIDGER TETON NF-
1254 PM MDT TUE AUG 18 2026
THIS AFTERNOON
SKY/WEATHER.........PARTLY CLOUDY. CHANCE OF SHOWERS AND
THUNDERSTORMS. CHANCE OF PRECIPITATION 50
PERCENT.
CHANCE OF THUNDER...40 PERCENT.
MAX TEMPERATURE.....62-67.
24 HR TREND......4 DEGREES COOLER.
MIN HUMIDITY........43-49 PERCENT.
24 HR TREND......9 PERCENT WETTER.
20-FOOT WINDS.......WEST WINDS AROUND 15 MPH WITH GUSTS TO AROUND
25 MPH.
RIDGE TOP WINDS.....WEST AROUND 20 MPH.
CHC OF WETTING RAIN.10 PERCENT.
TRANSPORT WINDS.....WEST AROUND 20 MPH.
MIXING HEIGHT.......3800-5200 FT AGL.
SMOKE DISPERSAL.....GOOD.
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY. CHANCE OF SHOWERS AND SLIGHT
CHANCE OF THUNDERSTORMS IN THE EVENING. CHANCE
OF PRECIPITATION 40 PERCENT.
CHANCE OF THUNDER...20 PERCENT.
MIN TEMPERATURE.....43-48.
24 HR TREND......UNCHANGED.
MAX HUMIDITY........69-75 PERCENT.
24 HR TREND......17 PERCENT DRIER.
HUMIDITY RECOVERY...GOOD.
20-FOOT WINDS.......NORTHWEST WINDS AROUND 10 MPH WITH GUSTS TO
AROUND 25 MPH UNTIL 2400, THEN
DOWNSLOPE/DOWNVALLEY 4-7 MPH.
RIDGE TOP WINDS.....NORTHWEST 10 TO 15 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....NORTHWEST AROUND 15 MPH UNTIL 2400, THEN
SOUTHWEST.
MIXING HEIGHT.......1800-3800 FT AGL UNTIL 2400, THEN 600 FT AGL.
SMOKE DISPERSAL.....POOR.
WEDNESDAY
SKY/WEATHER.........MOSTLY SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....68-73.
24 HR TREND......6 DEGREES WARMER.
MIN HUMIDITY........23-29 PERCENT.
24 HR TREND......20 PERCENT DRIER.
20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH UNTIL 0900, THEN WEST
10 TO 15 MPH. GUSTS UP TO 25 MPH.
RIDGE TOP WINDS.....WEST AROUND 10 MPH UNTIL 1200, THEN AROUND 20
MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST AROUND 10 MPH UNTIL 1200, THEN AROUND 20
MPH.
MIXING HEIGHT.......2000-4000 FT AGL UNTIL 1200, THEN 5800-7800 FT
AGL.
SMOKE DISPERSAL.....POOR TO FAIR UNTIL 1200, THEN VERY GOOD.
WEDNESDAY NIGHT
SKY/WEATHER.........MOSTLY CLEAR.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....45-50.
24 HR TREND......2 DEGREES WARMER.
MAX HUMIDITY........42-48 PERCENT.
24 HR TREND......25 PERCENT DRIER.
HUMIDITY RECOVERY...MODERATE.
20-FOOT WINDS.......NORTHWEST WINDS AROUND 10 MPH WITH GUSTS TO
AROUND 25 MPH UNTIL 2400, THEN
DOWNSLOPE/DOWNVALLEY 4-7 MPH.
RIDGE TOP WINDS.....NORTHWEST AROUND 15 MPH UNTIL 2400, THEN
NORTHEAST.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....NORTHWEST AROUND 15 MPH UNTIL 2400, THEN
NORTHEAST.
MIXING HEIGHT.......2800-4800 FT AGL UNTIL 2400, THEN 600 FT AGL.
SMOKE DISPERSAL.....FAIR TO GOOD UNTIL 2400, THEN POOR.
THURSDAY
SKY/WEATHER.........MOSTLY SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....72-77.
24 HR TREND......4 DEGREES WARMER.
MIN HUMIDITY........25-31 PERCENT.
24 HR TREND......1 PERCENT WETTER.
20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH UNTIL 1200, THEN WEST
AROUND 10 MPH WITH GUSTS TO AROUND 25 MPH.
RIDGE TOP WINDS.....WEST 10 TO 15 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST 10 TO 15 MPH.
MIXING HEIGHT.......2200-4200 FT AGL UNTIL 1200, THEN 7400-9400 FT
AGL.
SMOKE DISPERSAL.....POOR TO FAIR UNTIL 1200, THEN VERY GOOD.
FORECAST DAYS 3 THROUGH 7...
THURSDAY NIGHT
PARTLY CLOUDY. LOWS AROUND 50. WINDS GENERALLY
LESS THAN 10 MPH.
FRIDAY
PARTLY CLOUDY. CHANCE OF SHOWERS AND SLIGHT CHANCE OF
THUNDERSTORMS. LOWS IN THE LOWER 50S. HIGHS IN THE MID 70S. WINDS
GENERALLY LESS THAN 10 MPH.
SATURDAY
MOSTLY CLOUDY. CHANCE OF SHOWERS AND THUNDERSTORMS.
LOWS IN THE UPPER 40S. HIGHS IN THE UPPER 60S. WEST WINDS AROUND
10 MPH.
SUNDAY
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND THUNDERSTORMS.
LOWS IN THE MID 40S. HIGHS IN THE MID 60S. WINDS GENERALLY LESS
THAN 10 MPH.
MONDAY
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND THUNDERSTORMS.
LOWS IN THE MID 40S. HIGHS IN THE MID 60S.
TUESDAY
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS IN THE
MORNING, THEN CHANCE OF SHOWERS AND THUNDERSTORMS IN THE
AFTERNOON. HIGHS IN THE MID 60S.
WYZ288-192100-
EAST WIND RIVER MOUNTAINS/SOUTH SHOSHONE NF-
INCLUDING THE CITIES OF DUBOIS AND SOUTH PASS
1254 PM MDT TUE AUG 18 2026
THIS AFTERNOON
SKY/WEATHER.........PARTLY CLOUDY. CHANCE OF SHOWERS AND
THUNDERSTORMS. CHANCE OF PRECIPITATION 50
PERCENT.
CHANCE OF THUNDER...40 PERCENT.
MAX TEMPERATURE.....66-71.
24 HR TREND......4 DEGREES COOLER.
MIN HUMIDITY........40-46 PERCENT.
24 HR TREND......10 PERCENT WETTER.
20-FOOT WINDS.......WEST WINDS AROUND 15 MPH WITH GUSTS TO AROUND
25 MPH.
RIDGE TOP WINDS.....WEST AROUND 20 MPH.
CHC OF WETTING RAIN.10 PERCENT.
TRANSPORT WINDS.....WEST AROUND 20 MPH.
MIXING HEIGHT.......4400-5600 FT AGL.
SMOKE DISPERSAL.....GOOD.
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY. CHANCE OF SHOWERS AND SLIGHT
CHANCE OF THUNDERSTORMS IN THE EVENING. SLIGHT
CHANCE OF SHOWERS AFTER MIDNIGHT. CHANCE OF
PRECIPITATION 50 PERCENT.
CHANCE OF THUNDER...20 PERCENT.
MIN TEMPERATURE.....46-51.
24 HR TREND......1 DEGREE COOLER.
MAX HUMIDITY........61-67 PERCENT.
24 HR TREND......14 PERCENT DRIER.
HUMIDITY RECOVERY...GOOD.
20-FOOT WINDS.......WEST WINDS 10 TO 15 MPH WITH GUSTS TO AROUND 25
MPH UNTIL 2400, THEN DOWNSLOPE/DOWNVALLEY 4-7
MPH UNTIL 0300, THEN WEST AROUND 10 MPH WITH
GUSTS TO AROUND 15 MPH.
RIDGE TOP WINDS.....WEST AROUND 15 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST AROUND 15 MPH.
MIXING HEIGHT.......1800-3800 FT AGL UNTIL 2400, THEN 600 FT AGL.
SMOKE DISPERSAL.....POOR TO FAIR UNTIL 2400, THEN POOR.
WEDNESDAY
SKY/WEATHER.........MOSTLY SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....71-76.
24 HR TREND......5 DEGREES WARMER.
MIN HUMIDITY........23-29 PERCENT.
24 HR TREND......14 PERCENT DRIER.
20-FOOT WINDS.......WEST WINDS 10 TO 15 MPH. GUSTS UP TO 20 MPH
UNTIL 1200, THEN 30 MPH.
RIDGE TOP WINDS.....WEST 15 TO 20 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST 15 TO 20 MPH.
MIXING HEIGHT.......2200-4200 FT AGL UNTIL 1200, THEN 6600-8600 FT
AGL.
SMOKE DISPERSAL.....POOR TO FAIR UNTIL 1200, THEN VERY GOOD.
WEDNESDAY NIGHT
SKY/WEATHER.........MOSTLY CLEAR.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....49-54.
24 HR TREND......2 DEGREES WARMER.
MAX HUMIDITY........39-45 PERCENT.
24 HR TREND......21 PERCENT DRIER.
HUMIDITY RECOVERY...MODERATE.
20-FOOT WINDS.......WEST WINDS 10 TO 15 MPH WITH GUSTS TO AROUND 25
MPH UNTIL 2400, THEN DOWNSLOPE/DOWNVALLEY 4-7
MPH.
RIDGE TOP WINDS.....WEST 10 TO 15 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST 10 TO 15 MPH.
MIXING HEIGHT.......3200-5200 FT AGL UNTIL 2400, THEN 600 FT AGL.
SMOKE DISPERSAL.....FAIR TO GOOD UNTIL 2400, THEN POOR.
THURSDAY
SKY/WEATHER.........MOSTLY SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....74-79.
24 HR TREND......4 DEGREES WARMER.
MIN HUMIDITY........22-28 PERCENT.
24 HR TREND......UNCHANGED.
20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH UNTIL 1200, THEN WEST
AROUND 10 MPH. GUSTS UP TO 25 MPH.
RIDGE TOP WINDS.....WEST 10 TO 15 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST AROUND 10 MPH UNTIL 1200, THEN AROUND 20
MPH.
MIXING HEIGHT.......2400-4400 FT AGL UNTIL 1200, THEN 8000-10000 FT
AGL.
SMOKE DISPERSAL.....POOR TO FAIR UNTIL 1200, THEN VERY GOOD.
FORECAST DAYS 3 THROUGH 7...
THURSDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 50S. WINDS
GENERALLY LESS THAN 10 MPH.
FRIDAY
PARTLY CLOUDY. CHANCE OF SHOWERS AND SLIGHT CHANCE OF
THUNDERSTORMS. LOWS IN THE UPPER 50S. HIGHS IN THE UPPER 70S.
WINDS GENERALLY LESS THAN 10 MPH.
SATURDAY
MOSTLY CLOUDY WITH CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS IN THE MID 50S. HIGHS IN THE LOWER 70S. WEST
WINDS AROUND 10 MPH.
SUNDAY
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND THUNDERSTORMS.
LOWS IN THE LOWER 50S. HIGHS IN THE LOWER 70S. WEST WINDS AROUND
10 MPH.
MONDAY
PARTLY CLOUDY. CHANCE OF SHOWERS AND THUNDERSTORMS.
LOWS IN THE LOWER 50S. HIGHS AROUND 70.
TUESDAY
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS IN THE
MORNING, THEN CHANCE OF SHOWERS AND THUNDERSTORMS IN THE
AFTERNOON. HIGHS AROUND 70.
WYZ414-192100-
SALT AND WYOMING RANGES/WEST ZONE BRIDGER TETON NF-
INCLUDING THE CITY OF AFTON
1254 PM MDT TUE AUG 18 2026
THIS AFTERNOON
SKY/WEATHER.........PARTLY CLOUDY. CHANCE OF SHOWERS AND
THUNDERSTORMS EARLY IN THE EVENING, THEN SLIGHT
CHANCE OF SHOWERS AND THUNDERSTORMS EARLY IN
THE EVENING. CHANCE OF PRECIPITATION 50
PERCENT.
CHANCE OF THUNDER...40 PERCENT.
MAX TEMPERATURE.....66-71.
24 HR TREND......3 DEGREES COOLER.
MIN HUMIDITY........37-43 PERCENT.
24 HR TREND......6 PERCENT WETTER.
20-FOOT WINDS.......WEST WINDS AROUND 15 MPH WITH GUSTS TO AROUND
25 MPH.
RIDGE TOP WINDS.....WEST AROUND 20 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST AROUND 20 MPH.
MIXING HEIGHT.......5000-7000 FT AGL.
SMOKE DISPERSAL.....GOOD TO VERY GOOD.
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS EARLY IN THE EVENING. CHANCE OF
PRECIPITATION 20 PERCENT.
CHANCE OF THUNDER...10 PERCENT.
MIN TEMPERATURE.....43-48.
24 HR TREND......UNCHANGED.
MAX HUMIDITY........71-77 PERCENT.
24 HR TREND......21 PERCENT DRIER.
HUMIDITY RECOVERY...EXCELLENT.
20-FOOT WINDS.......WEST WINDS AROUND 10 MPH WITH GUSTS TO AROUND
25 MPH UNTIL 2100, THEN DOWNSLOPE/DOWNVALLEY
4-7 MPH.
RIDGE TOP WINDS.....SOUTHWEST 10 TO 15 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST 10 TO 15 MPH.
MIXING HEIGHT.......2000-4000 FT AGL UNTIL 2400, THEN 600 FT AGL.
SMOKE DISPERSAL.....POOR TO FAIR.
WEDNESDAY
SKY/WEATHER.........MOSTLY SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....70-75.
24 HR TREND......5 DEGREES WARMER.
MIN HUMIDITY........21-27 PERCENT.
24 HR TREND......16 PERCENT DRIER.
20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH UNTIL 0900, THEN WEST
10 TO 15 MPH WITH GUSTS TO AROUND 25 MPH.
RIDGE TOP WINDS.....WEST AROUND 10 MPH UNTIL 1200, THEN AROUND 20
MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST AROUND 10 MPH UNTIL 1200, THEN AROUND 20
MPH.
MIXING HEIGHT.......2000-4000 FT AGL UNTIL 1200, THEN 6600-8600 FT
AGL.
SMOKE DISPERSAL.....POOR TO FAIR UNTIL 1200, THEN VERY GOOD.
WEDNESDAY NIGHT
SKY/WEATHER.........PARTLY CLOUDY.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....45-50.
24 HR TREND......2 DEGREES WARMER.
MAX HUMIDITY........55-61 PERCENT.
24 HR TREND......17 PERCENT DRIER.
HUMIDITY RECOVERY...MODERATE.
20-FOOT WINDS.......NORTHWEST WINDS AROUND 10 MPH UNTIL 2100, THEN
DOWNSLOPE/DOWNVALLEY 4-7 MPH. GUSTS UP TO 20
MPH.
RIDGE TOP WINDS.....NORTHWEST AROUND 15 MPH UNTIL 2400, THEN
SOUTHEAST.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....NORTHWEST AROUND 15 MPH UNTIL 2400, THEN
SOUTHEAST.
MIXING HEIGHT.......2800-4800 FT AGL UNTIL 2400, THEN 400-600 FT
AGL.
SMOKE DISPERSAL.....FAIR TO GOOD UNTIL 2400, THEN POOR.
THURSDAY
SKY/WEATHER.........MOSTLY SUNNY THEN BECOMING PARTLY CLOUDY.
SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS IN
THE AFTERNOON. CHANCE OF PRECIPITATION 20
PERCENT.
CHANCE OF THUNDER...10 PERCENT.
MAX TEMPERATURE.....76-81.
24 HR TREND......4 DEGREES WARMER.
MIN HUMIDITY........24-30 PERCENT.
24 HR TREND......3 PERCENT WETTER.
20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH UNTIL 1200, THEN WEST
AROUND 10 MPH WITH GUSTS TO AROUND 25 MPH.
RIDGE TOP WINDS.....SOUTH AROUND 10 MPH UNTIL 1200, THEN WEST.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....SOUTHWEST AROUND 10 MPH UNTIL 1200, THEN WEST.
MIXING HEIGHT.......2200-4200 FT AGL UNTIL 1200, THEN 6600-8600 FT
AGL.
SMOKE DISPERSAL.....POOR TO FAIR UNTIL 1200, THEN GOOD TO VERY
GOOD.
FORECAST DAYS 3 THROUGH 7...
THURSDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 50S. WINDS
GENERALLY LESS THAN 10 MPH.
FRIDAY
PARTLY CLOUDY. CHANCE OF SHOWERS AND SLIGHT CHANCE OF
THUNDERSTORMS. LOWS IN THE MID 50S. HIGHS IN THE LOWER 80S. WINDS
GENERALLY LESS THAN 10 MPH.
SATURDAY
MOSTLY CLOUDY. CHANCE OF SHOWERS AND THUNDERSTORMS.
LOWS IN THE LOWER 50S. HIGHS IN THE LOWER 70S. WINDS GENERALLY
LESS THAN 10 MPH.
SUNDAY
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND THUNDERSTORMS.
LOWS IN THE UPPER 40S. HIGHS IN THE LOWER 70S. WINDS GENERALLY
LESS THAN 10 MPH.
MONDAY THROUGH TUESDAY
PARTLY CLOUDY WITH CHANCE OF SHOWERS
AND THUNDERSTORMS. LOWS IN THE UPPER 40S. HIGHS IN THE LOWER 70S.
WYZ278-192100-
UPPER GREEN RIVER BASIN/ROCK SPRINGS BLM-
INCLUDING THE CITIES OF BIG PINEY, FARSON, AND PINEDALE
1254 PM MDT TUE AUG 18 2026
THIS AFTERNOON
SKY/WEATHER.........PARTLY CLOUDY. CHANCE OF SHOWERS AND
THUNDERSTORMS. CHANCE OF PRECIPITATION 50
PERCENT.
CHANCE OF THUNDER...30 PERCENT.
MAX TEMPERATURE.....70-75.
24 HR TREND......3 DEGREES COOLER.
MIN HUMIDITY........34-40 PERCENT.
24 HR TREND......10 PERCENT WETTER.
20-FOOT WINDS.......WEST WINDS AROUND 15 MPH WITH GUSTS TO AROUND
25 MPH.
RIDGE TOP WINDS.....WEST AROUND 20 MPH.
CHC OF WETTING RAIN.5 PERCENT.
TRANSPORT WINDS.....WEST AROUND 20 MPH.
MIXING HEIGHT.......4600-6600 FT AGL.
SMOKE DISPERSAL.....GOOD TO VERY GOOD.
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS EARLY IN THE EVENING. CHANCE OF
PRECIPITATION 20 PERCENT.
CHANCE OF THUNDER...20 PERCENT.
MIN TEMPERATURE.....45-50.
24 HR TREND......4 DEGREES COOLER.
MAX HUMIDITY........72-78 PERCENT.
24 HR TREND......3 PERCENT DRIER.
HUMIDITY RECOVERY...EXCELLENT.
20-FOOT WINDS.......NORTHWEST WINDS AROUND 15 MPH WITH GUSTS TO
AROUND 25 MPH UNTIL 2100, THEN
DOWNSLOPE/DOWNVALLEY 4-7 MPH.
RIDGE TOP WINDS.....NORTHWEST AROUND 15 MPH UNTIL 2400, THEN NORTH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....NORTHWEST AROUND 15 MPH UNTIL 2400, THEN EAST.
MIXING HEIGHT.......1800-3800 FT AGL UNTIL 2400, THEN 600 FT AGL.
SMOKE DISPERSAL.....POOR TO FAIR.
WEDNESDAY
SKY/WEATHER.........MOSTLY SUNNY THEN BECOMING PARTLY CLOUDY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....75-80.
24 HR TREND......5 DEGREES WARMER.
MIN HUMIDITY........19-25 PERCENT.
24 HR TREND......15 PERCENT DRIER.
20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH UNTIL 1200, THEN WEST
AROUND 15 MPH WITH GUSTS TO AROUND 25 MPH.
RIDGE TOP WINDS.....NORTH AROUND 10 MPH UNTIL 1200, THEN WEST
AROUND 20 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....NORTHWEST AROUND 10 MPH UNTIL 1200, THEN WEST
AROUND 20 MPH.
MIXING HEIGHT.......1600-3600 FT AGL UNTIL 1200, THEN 7400-9400 FT
AGL.
SMOKE DISPERSAL.....POOR UNTIL 1200, THEN VERY GOOD.
WEDNESDAY NIGHT
SKY/WEATHER.........PARTLY CLOUDY.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....46-51.
24 HR TREND......1 DEGREE WARMER.
MAX HUMIDITY........55-61 PERCENT.
24 HR TREND......22 PERCENT DRIER.
HUMIDITY RECOVERY...MODERATE.
20-FOOT WINDS.......NORTHWEST WINDS 10 TO 15 MPH WITH GUSTS TO
AROUND 25 MPH UNTIL 2400, THEN
DOWNSLOPE/DOWNVALLEY 4-7 MPH.
RIDGE TOP WINDS.....NORTHWEST 10 TO 15 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....NORTHWEST 10 TO 15 MPH.
MIXING HEIGHT.......4000-6000 FT AGL UNTIL 2400, THEN 400-600 FT
AGL.
SMOKE DISPERSAL.....GOOD UNTIL 2400, THEN POOR.
THURSDAY
SKY/WEATHER.........MOSTLY SUNNY THEN BECOMING PARTLY CLOUDY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....77-82.
24 HR TREND......3 DEGREES WARMER.
MIN HUMIDITY........21-27 PERCENT.
24 HR TREND......1 PERCENT WETTER.
20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH UNTIL 1500, THEN WEST
AROUND 10 MPH. GUSTS UP TO 20 MPH.
RIDGE TOP WINDS.....NORTH AROUND 10 MPH UNTIL 1200, THEN WEST.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....NORTHWEST 10 TO 15 MPH.
MIXING HEIGHT.......1600-3600 FT AGL UNTIL 1200, THEN 7200-9200 FT
AGL.
SMOKE DISPERSAL.....POOR UNTIL 1200, THEN GOOD TO VERY GOOD.
FORECAST DAYS 3 THROUGH 7...
THURSDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 50S. WINDS
GENERALLY LESS THAN 10 MPH.
FRIDAY
PARTLY CLOUDY. CHANCE OF SHOWERS AND SLIGHT CHANCE OF
THUNDERSTORMS. LOWS IN THE MID 50S. HIGHS IN THE MID 80S. WINDS
GENERALLY LESS THAN 10 MPH.
SATURDAY
MOSTLY CLOUDY. CHANCE OF SHOWERS AND THUNDERSTORMS.
LOWS AROUND 50. HIGHS IN THE UPPER 70S. WINDS GENERALLY LESS THAN
10 MPH.
SUNDAY
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND THUNDERSTORMS.
LOWS IN THE UPPER 40S. HIGHS IN THE MID 70S. WINDS GENERALLY LESS
THAN 10 MPH.
MONDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS IN THE UPPER 40S. HIGHS IN THE MID 70S.
TUESDAY
PARTLY CLOUDY. CHANCE OF SHOWERS AND THUNDERSTORMS IN
THE AFTERNOON. HIGHS IN THE MID 70S.
WYZ277-192100-
LINCOLN AND UINTA COUNTIES/LOWER ELEVATIONS-
INCLUDING THE CITIES OF EVANSTON, FORT BRIDGER, AND KEMMERER
1254 PM MDT TUE AUG 18 2026
THIS AFTERNOON
SKY/WEATHER.........PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. CHANCE OF PRECIPITATION 20
PERCENT.
CHANCE OF THUNDER...10 PERCENT.
MAX TEMPERATURE.....72-77.
24 HR TREND......3 DEGREES COOLER.
MIN HUMIDITY........28-34 PERCENT.
24 HR TREND......7 PERCENT WETTER.
20-FOOT WINDS.......WEST WINDS AROUND 15 MPH WITH GUSTS TO AROUND
25 MPH.
RIDGE TOP WINDS.....WEST AROUND 20 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST AROUND 20 MPH.
MIXING HEIGHT.......8200-9000 FT AGL.
SMOKE DISPERSAL.....VERY GOOD TO EXCELLENT.
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....47-52.
24 HR TREND......3 DEGREES COOLER.
MAX HUMIDITY........66-72 PERCENT.
24 HR TREND......10 PERCENT DRIER.
HUMIDITY RECOVERY...GOOD.
20-FOOT WINDS.......NORTHWEST WINDS AROUND 15 MPH WITH GUSTS TO
AROUND 25 MPH UNTIL 2100, THEN
DOWNSLOPE/DOWNVALLEY 4-7 MPH.
RIDGE TOP WINDS.....NORTHWEST 10 TO 15 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....NORTHWEST 10 TO 15 MPH.
MIXING HEIGHT.......3400-5400 FT AGL UNTIL 2400, THEN 600 FT AGL.
SMOKE DISPERSAL.....GOOD UNTIL 2400, THEN POOR.
WEDNESDAY
SKY/WEATHER.........MOSTLY SUNNY THEN BECOMING PARTLY CLOUDY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....77-82.
24 HR TREND......4 DEGREES WARMER.
MIN HUMIDITY........17-23 PERCENT.
24 HR TREND......10 PERCENT DRIER.
20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH UNTIL 1200, THEN WEST
AROUND 15 MPH WITH GUSTS TO AROUND 25 MPH.
RIDGE TOP WINDS.....WEST AROUND 10 MPH UNTIL 1200, THEN AROUND 20
MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST AROUND 10 MPH UNTIL 1200, THEN AROUND 20
MPH.
MIXING HEIGHT.......2200-4200 FT AGL UNTIL 1200, THEN 8200-10200 FT
AGL.
SMOKE DISPERSAL.....POOR TO FAIR UNTIL 1200, THEN VERY GOOD TO
EXCELLENT.
WEDNESDAY NIGHT
SKY/WEATHER.........PARTLY CLOUDY.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....48-53.
24 HR TREND......1 DEGREE WARMER.
MAX HUMIDITY........48-54 PERCENT.
24 HR TREND......18 PERCENT DRIER.
HUMIDITY RECOVERY...MODERATE.
20-FOOT WINDS.......NORTHWEST WINDS AROUND 15 MPH WITH GUSTS TO
AROUND 25 MPH UNTIL 2100, THEN
DOWNSLOPE/DOWNVALLEY 4-7 MPH.
RIDGE TOP WINDS.....NORTH 10 TO 15 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....NORTH 10 TO 15 MPH.
MIXING HEIGHT.......3800-5800 FT AGL UNTIL 2400, THEN 400-600 FT
AGL.
SMOKE DISPERSAL.....GOOD UNTIL 2400, THEN POOR.
THURSDAY
SKY/WEATHER.........PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE AFTERNOON. CHANCE OF
PRECIPITATION 20 PERCENT.
CHANCE OF THUNDER...10 PERCENT.
MAX TEMPERATURE.....80-85.
24 HR TREND......3 DEGREES WARMER.
MIN HUMIDITY........19-25 PERCENT.
24 HR TREND......1 PERCENT WETTER.
20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH UNTIL 1500, THEN WEST
AROUND 10 MPH WITH HIGHER GUSTS.
RIDGE TOP WINDS.....SOUTHEAST AROUND 5 MPH UNTIL 1200, THEN
SOUTHWEST.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....SOUTH AROUND 5 MPH UNTIL 1200, THEN WEST.
MIXING HEIGHT.......2200-4200 FT AGL UNTIL 1200, THEN 7800-9800 FT
AGL.
SMOKE DISPERSAL.....POOR UNTIL 1200, THEN GOOD TO VERY GOOD.
FORECAST DAYS 3 THROUGH 7...
THURSDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 50S. WINDS
GENERALLY LESS THAN 10 MPH.
FRIDAY
PARTLY CLOUDY. CHANCE OF SHOWERS AND SLIGHT CHANCE OF
THUNDERSTORMS. LOWS IN THE MID 50S. HIGHS IN THE MID 80S. WINDS
GENERALLY LESS THAN 10 MPH.
SATURDAY THROUGH SUNDAY
PARTLY CLOUDY WITH CHANCE OF SHOWERS
AND THUNDERSTORMS. LOWS 49 TO 54. HIGHS 77 TO 82. WINDS GENERALLY
LESS THAN 10 MPH.
MONDAY THROUGH TUESDAY
PARTLY CLOUDY WITH CHANCE OF SHOWERS
AND THUNDERSTORMS. LOWS AROUND 50. HIGHS IN THE UPPER 70S.
WYZ279-192100-
SWEETWATER COUNTY/ROCK SPRINGS BLM/FLAMING GORGE NRA-
INCLUDING THE CITIES OF GREEN RIVER, ROCK SPRINGS, AND WAMSUTTER
1254 PM MDT TUE AUG 18 2026
THIS AFTERNOON
SKY/WEATHER.........PARTLY CLOUDY. CHANCE OF SHOWERS AND
THUNDERSTORMS. CHANCE OF PRECIPITATION 50
PERCENT.
CHANCE OF THUNDER...30 PERCENT.
MAX TEMPERATURE.....74-79.
24 HR TREND......4 DEGREES COOLER.
MIN HUMIDITY........33-39 PERCENT.
24 HR TREND......14 PERCENT WETTER.
20-FOOT WINDS.......WEST WINDS AROUND 15 MPH WITH GUSTS TO AROUND
25 MPH.
RIDGE TOP WINDS.....WEST AROUND 20 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST AROUND 20 MPH.
MIXING HEIGHT.......6000-8000 FT AGL.
SMOKE DISPERSAL.....VERY GOOD.
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS EARLY IN THE EVENING. CHANCE OF
PRECIPITATION 20 PERCENT.
CHANCE OF THUNDER...20 PERCENT.
MIN TEMPERATURE.....52-57.
24 HR TREND......3 DEGREES COOLER.
MAX HUMIDITY........67-73 PERCENT.
24 HR TREND......3 PERCENT DRIER.
HUMIDITY RECOVERY...GOOD.
20-FOOT WINDS.......WEST WINDS AROUND 10 MPH WITH GUSTS TO AROUND
25 MPH UNTIL 2100, THEN DOWNSLOPE/DOWNVALLEY
4-7 MPH UNTIL 2400, THEN SOUTHEAST AROUND 10
MPH WITH GUSTS TO AROUND 15 MPH UNTIL 0300,
THEN DOWNSLOPE/DOWNVALLEY 4-7 MPH.
RIDGE TOP WINDS.....WEST 10 TO 15 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....NORTH AROUND 15 MPH UNTIL 2400, THEN SOUTH.
MIXING HEIGHT.......2600-4600 FT AGL UNTIL 2400, THEN 400-600 FT
AGL.
SMOKE DISPERSAL.....FAIR TO GOOD UNTIL 2400, THEN POOR.
WEDNESDAY
SKY/WEATHER.........MOSTLY SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....78-83.
24 HR TREND......4 DEGREES WARMER.
MIN HUMIDITY........28-34 PERCENT.
24 HR TREND......12 PERCENT DRIER.
20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH UNTIL 1200, THEN WEST
AROUND 15 MPH WITH GUSTS TO AROUND 25 MPH.
RIDGE TOP WINDS.....WEST AROUND 10 MPH UNTIL 1200, THEN AROUND 20
MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....SOUTHWEST AROUND 10 MPH UNTIL 1200, THEN WEST
AROUND 20 MPH.
MIXING HEIGHT.......2000-4000 FT AGL UNTIL 1200, THEN 8400-10400 FT
AGL.
SMOKE DISPERSAL.....POOR TO FAIR UNTIL 1200, THEN EXCELLENT.
WEDNESDAY NIGHT
SKY/WEATHER.........PARTLY CLOUDY.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....53-58.
24 HR TREND......1 DEGREE WARMER.
MAX HUMIDITY........49-55 PERCENT.
24 HR TREND......25 PERCENT DRIER.
HUMIDITY RECOVERY...MODERATE.
20-FOOT WINDS.......NORTHWEST WINDS AROUND 15 MPH WITH GUSTS TO
AROUND 25 MPH UNTIL 2100, THEN
DOWNSLOPE/DOWNVALLEY 4-7 MPH.
RIDGE TOP WINDS.....WEST 10 TO 15 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....NORTHWEST 10 TO 15 MPH.
MIXING HEIGHT.......4600-6600 FT AGL UNTIL 2400, THEN 400-600 FT
AGL.
SMOKE DISPERSAL.....GOOD TO VERY GOOD UNTIL 2400, THEN POOR.
THURSDAY
SKY/WEATHER.........PARTLY CLOUDY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....80-85.
24 HR TREND......2 DEGREES WARMER.
MIN HUMIDITY........29-35 PERCENT.
24 HR TREND......1 PERCENT DRIER.
20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH UNTIL 1500, THEN WEST
AROUND 10 MPH WITH HIGHER GUSTS.
RIDGE TOP WINDS.....WEST 5 TO 10 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST AROUND 5 MPH UNTIL 1200, THEN AROUND 15
MPH.
MIXING HEIGHT.......2000-4000 FT AGL UNTIL 1200, THEN 7800-9800 FT
AGL.
SMOKE DISPERSAL.....POOR UNTIL 1200, THEN GOOD TO VERY GOOD.
FORECAST DAYS 3 THROUGH 7...
THURSDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 50S. WINDS
GENERALLY LESS THAN 10 MPH.
FRIDAY
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS IN THE UPPER 50S. HIGHS IN THE UPPER 80S.
WINDS GENERALLY LESS THAN 10 MPH.
SATURDAY
MOSTLY CLOUDY WITH CHANCE OF SHOWERS AND SLIGHT
CHANCE OF THUNDERSTORMS. LOWS IN THE MID 50S. HIGHS IN THE LOWER
80S. SOUTHWEST WINDS AROUND 10 MPH.
SUNDAY
PARTLY CLOUDY. CHANCE OF THUNDERSTORMS AND SLIGHT
CHANCE OF SHOWERS. LOWS IN THE LOWER 50S. HIGHS IN THE LOWER 80S.
WINDS GENERALLY LESS THAN 10 MPH.
MONDAY THROUGH TUESDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS. LOWS IN THE LOWER 50S. HIGHS AROUND
80.
WYZ289-192100-
GRANITE/GREEN/FERRIS/RATTLESNAKE MOUNTAINS-
INCLUDING THE CITY OF JEFFREY CITY
1254 PM MDT TUE AUG 18 2026
THIS AFTERNOON
SKY/WEATHER.........PARTLY CLOUDY. CHANCE OF SHOWERS AND
THUNDERSTORMS. SOME THUNDERSTORMS MAY BE
SEVERE. CHANCE OF PRECIPITATION 50 PERCENT.
CHANCE OF THUNDER...30 PERCENT.
MAX TEMPERATURE.....72-77.
24 HR TREND......4 DEGREES COOLER.
MIN HUMIDITY........32-38 PERCENT.
24 HR TREND......12 PERCENT WETTER.
20-FOOT WINDS.......WEST WINDS AROUND 15 MPH WITH GUSTS TO AROUND
25 MPH.
RIDGE TOP WINDS.....WEST AROUND 20 MPH.
CHC OF WETTING RAIN.5 PERCENT.
TRANSPORT WINDS.....NORTHWEST AROUND 20 MPH.
MIXING HEIGHT.......4000-5800 FT AGL.
SMOKE DISPERSAL.....GOOD.
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE EVENING. SOME
THUNDERSTORMS MAY BE SEVERE EARLY IN THE
EVENING. CHANCE OF PRECIPITATION 20 PERCENT.
CHANCE OF THUNDER...20 PERCENT.
MIN TEMPERATURE.....50-55.
24 HR TREND......4 DEGREES COOLER.
MAX HUMIDITY........70-76 PERCENT.
24 HR TREND......1 PERCENT WETTER.
HUMIDITY RECOVERY...EXCELLENT.
20-FOOT WINDS.......WEST WINDS AROUND 10 MPH UNTIL 2100, THEN NORTH
UNTIL 2400, THEN SOUTHEAST UNTIL 0300, THEN
DOWNSLOPE/DOWNVALLEY 4-7 MPH. GUSTS UP TO 20
MPH.
RIDGE TOP WINDS.....WEST AROUND 15 MPH UNTIL 2400, THEN SOUTH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST 10 TO 15 MPH.
MIXING HEIGHT.......1400-3400 FT AGL UNTIL 2400, THEN 400-600 FT
AGL.
SMOKE DISPERSAL.....POOR.
WEDNESDAY
SKY/WEATHER.........MOSTLY SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....77-82.
24 HR TREND......4 DEGREES WARMER.
MIN HUMIDITY........18-24 PERCENT.
24 HR TREND......13 PERCENT DRIER.
20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH UNTIL 0900, THEN WEST
10 TO 15 MPH WITH GUSTS TO AROUND 30 MPH.
RIDGE TOP WINDS.....SOUTHWEST AROUND 10 MPH UNTIL 1200, THEN
NORTHWEST AROUND 20 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST 15 TO 20 MPH.
MIXING HEIGHT.......2000-4000 FT AGL UNTIL 1200, THEN 7600-9600 FT
AGL.
SMOKE DISPERSAL.....POOR TO FAIR UNTIL 1200, THEN VERY GOOD TO
EXCELLENT.
WEDNESDAY NIGHT
SKY/WEATHER.........MOSTLY CLEAR.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....52-57.
24 HR TREND......2 DEGREES WARMER.
MAX HUMIDITY........46-52 PERCENT.
24 HR TREND......26 PERCENT DRIER.
HUMIDITY RECOVERY...MODERATE.
20-FOOT WINDS.......NORTHWEST WINDS AROUND 10 MPH WITH GUSTS TO
AROUND 25 MPH UNTIL 2100, THEN
DOWNSLOPE/DOWNVALLEY 4-7 MPH.
RIDGE TOP WINDS.....NORTH 10 TO 15 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....NORTH 10 TO 15 MPH.
MIXING HEIGHT.......3800-5800 FT AGL UNTIL 2400, THEN 400-600 FT
AGL.
SMOKE DISPERSAL.....GOOD UNTIL 2400, THEN POOR.
THURSDAY
SKY/WEATHER.........MOSTLY SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....81-86.
24 HR TREND......4 DEGREES WARMER.
MIN HUMIDITY........14-20 PERCENT.
24 HR TREND......3 PERCENT DRIER.
20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH UNTIL 1200, THEN WEST
AROUND 10 MPH WITH GUSTS TO AROUND 25 MPH.
RIDGE TOP WINDS.....WEST AROUND 5 MPH UNTIL 1200, THEN AROUND 15
MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST 10 TO 15 MPH.
MIXING HEIGHT.......2000-4000 FT AGL UNTIL 1200, THEN 8200-10200 FT
AGL.
SMOKE DISPERSAL.....POOR UNTIL 1200, THEN VERY GOOD.
FORECAST DAYS 3 THROUGH 7...
THURSDAY THROUGH FRIDAY
PARTLY CLOUDY. LOWS 57 TO 62. HIGHS IN
THE UPPER 80S. WINDS GENERALLY LESS THAN 10 MPH.
SATURDAY THROUGH SUNDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS. LOWS 55 TO 60. HIGHS 81 TO 86. WEST
WINDS AROUND 10 MPH.
MONDAY THROUGH TUESDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS. LOWS IN THE MID 50S. HIGHS IN THE
LOWER 80S.
WYZ300-192100-
CASPER MOUNTAIN-
1254 PM MDT TUE AUG 18 2026
THIS AFTERNOON
SKY/WEATHER.........CLOUDY. CHANCE OF SHOWERS AND THUNDERSTORMS.
SOME THUNDERSTORMS MAY BE SEVERE. CHANCE OF
PRECIPITATION 50 PERCENT.
CHANCE OF THUNDER...30 PERCENT.
MAX TEMPERATURE.....71-76.
24 HR TREND......5 DEGREES COOLER.
MIN HUMIDITY........36-42 PERCENT.
24 HR TREND......14 PERCENT WETTER.
20-FOOT WINDS.......WEST WINDS AROUND 10 MPH WITH HIGHER GUSTS.
RIDGE TOP WINDS.....WEST AROUND 15 MPH.
CHC OF WETTING RAIN.5 PERCENT.
TRANSPORT WINDS.....WEST AROUND 20 MPH.
MIXING HEIGHT.......3800-5000 FT AGL.
SMOKE DISPERSAL.....FAIR TO GOOD.
TONIGHT
SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
CHANCE OF SHOWERS AND THUNDERSTORMS EARLY IN
THE EVENING, THEN SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE EVENING. SOME
THUNDERSTORMS MAY BE SEVERE EARLY IN THE
EVENING. CHANCE OF PRECIPITATION 30 PERCENT.
CHANCE OF THUNDER...20 PERCENT.
MIN TEMPERATURE.....50-55.
24 HR TREND......4 DEGREES COOLER.
MAX HUMIDITY........72-78 PERCENT.
24 HR TREND......11 PERCENT WETTER.
HUMIDITY RECOVERY...EXCELLENT.
20-FOOT WINDS.......WEST WINDS AROUND 10 MPH UNTIL 2100, THEN NORTH
UNTIL 2400, THEN DOWNSLOPE/DOWNVALLEY 4-7 MPH.
GUSTS UP TO 20 MPH.
RIDGE TOP WINDS.....NORTHWEST AROUND 15 MPH UNTIL 2400, THEN
SOUTHWEST.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....SOUTHWEST 10 TO 15 MPH.
MIXING HEIGHT.......800-2800 FT AGL UNTIL 2400, THEN 600 FT AGL.
SMOKE DISPERSAL.....POOR.
WEDNESDAY
SKY/WEATHER.........MOSTLY SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....74-79.
24 HR TREND......3 DEGREES WARMER.
MIN HUMIDITY........22-28 PERCENT.
24 HR TREND......17 PERCENT DRIER.
20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH UNTIL 0900, THEN WEST
10 TO 15 MPH WITH GUSTS TO AROUND 25 MPH.
RIDGE TOP WINDS.....SOUTHWEST AROUND 10 MPH UNTIL 1200, THEN
NORTHWEST AROUND 20 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST 15 TO 20 MPH.
MIXING HEIGHT.......2000-4000 FT AGL UNTIL 1200, THEN 7400-9400 FT
AGL.
SMOKE DISPERSAL.....POOR TO FAIR UNTIL 1200, THEN VERY GOOD.
WEDNESDAY NIGHT
SKY/WEATHER.........MOSTLY CLEAR.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....53-58.
24 HR TREND......2 DEGREES WARMER.
MAX HUMIDITY........46-52 PERCENT.
24 HR TREND......27 PERCENT DRIER.
HUMIDITY RECOVERY...MODERATE.
20-FOOT WINDS.......NORTHWEST WINDS AROUND 10 MPH AND GUSTY UNTIL
2100, THEN DOWNSLOPE/DOWNVALLEY 4-7 MPH.
RIDGE TOP WINDS.....NORTHEAST AROUND 15 MPH UNTIL 2400, THEN
SOUTHEAST.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....NORTH AROUND 15 MPH UNTIL 2400, THEN SOUTHEAST.
MIXING HEIGHT.......3200-5200 FT AGL UNTIL 2400, THEN 600 FT AGL.
SMOKE DISPERSAL.....FAIR TO GOOD UNTIL 2400, THEN POOR.
THURSDAY
SKY/WEATHER.........MOSTLY SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....79-84.
24 HR TREND......5 DEGREES WARMER.
MIN HUMIDITY........17-23 PERCENT.
24 HR TREND......4 PERCENT DRIER.
20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH UNTIL 1200, THEN WEST
AROUND 10 MPH. GUSTS UP TO 20 MPH.
RIDGE TOP WINDS.....SOUTHWEST AROUND 10 MPH UNTIL 1200, THEN WEST.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST 10 TO 15 MPH.
MIXING HEIGHT.......2200-4200 FT AGL UNTIL 1200, THEN 7800-9800 FT
AGL.
SMOKE DISPERSAL.....POOR TO FAIR UNTIL 1200, THEN GOOD TO VERY
GOOD.
FORECAST DAYS 3 THROUGH 7...
THURSDAY THROUGH FRIDAY
MOSTLY CLEAR. LOWS 57 TO 62. HIGHS IN
THE MID 80S. WINDS GENERALLY LESS THAN 10 MPH.
SATURDAY
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS IN THE LOWER 60S. HIGHS IN THE LOWER 80S.
SOUTHWEST WINDS AROUND 10 MPH.
SUNDAY
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND SLIGHT CHANCE
OF THUNDERSTORMS. LOWS IN THE UPPER 50S. HIGHS AROUND 80. WEST
WINDS AROUND 10 MPH.
MONDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS IN THE UPPER 50S. HIGHS IN THE UPPER 70S.
TUESDAY
PARTLY CLOUDY. CHANCE OF SHOWERS AND THUNDERSTORMS IN
THE AFTERNOON. HIGHS IN THE UPPER 70S.
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