999
FNUS55 KRIW 182031
FWFRIW
FIRE WEATHER PLANNING FORECAST FOR WESTERN AND CENTRAL WYOMING
NATIONAL WEATHER SERVICE RIVERTON WY
231 PM MDT THU SEP 18 2025
DISCUSSION
...YELLOWSTONE NP AND TETON DISPATCH AREAS (INCLUDES FIRE WEATHER
ZONES 140...414...415...AND 416)...
A DRY AND MILD DAY CONTINUES WITH RELATIVELY LIGHT WINDS. OCCASIONAL
GUSTS AROUND 15 MPH ARE POSSIBLE OVER HIGHER ELEVATIONS UNTIL
SUNSET. MIXING AND SMOKE DISPERSAL WILL BE GOOD UNTIL AROUND 1800L.
OVERNIGHT RELATIVE HUMIDITY RECOVERY IS EXPECTED TO BE FAIR TO GOOD
ACROSS HIGHER ELEVATIONS AND EXCELLENT IN LOW ELEVATIONS. SLIGHTLY
WARMER WITH SLIGHTLY LOWER MINIMUM RELATIVE HUMIDITY VALUES ON
FRIDAY. THE NEXT CHANCE FOR SHOWERS OR THUNDERSTORMS IS SATURDAY FOR
ZONES 414, 415, AND 416 AND SUNDAY FOR ZONE 140.
..CODY DISPATCH AREA (INCLUDES FIRE WEATHER ZONES 275...276
282...283...285...286...287...288...AND 289)...
A DRY AND MILD DAY CONTINUES WITH RELATIVELY LIGHT WINDS. OCCASIONAL
GUSTS AROUND 20 MPH ARE POSSIBLE OVER HIGHER ELEVATIONS UNTIL
SUNSET. MIXING AND SMOKE DISPERSAL WILL BE FAIR TO GOOD UNTIL AROUND
1800L. OVERNIGHT RELATIVE HUMIDITY RECOVERY IS EXPECTED TO BE FAIR
TO GOOD ACROSS THE ENTIRE DISPATCH ZONE. SLIGHTLY WARMER WITH
SLIGHTLY LOWER MINIMUM RELATIVE HUMIDITY ON FRIDAY AND SATURDAY. THE
NEXT CHANCE FOR SHOWERS OR THUNDERSTORMS IS SUNDAY AFTERNOON INTO
MONDAY.
..CASPER DISPATCH AREA (INCLUDES FIRE WEATHER ZONES 277...278
279...280...281...285...289...AND 300)...
APART FROM VERY ISOLATED THUNDERSTORM CHANCE ACROSS NORTHERN ZONE
281 BETWEEN 2200L AND 0200L FRIDAY MORNING, A DRY AND MILD DAY
CONTINUES WITH RELATIVELY LIGHT WINDS. OCCASIONAL GUSTS AROUND 20
MPH ARE POSSIBLE ACROSS WESTERN ZONE 289 UNTIL SUNSET. MIXING AND
SMOKE DISPERSAL WILL BE GOOD UNTIL AROUND 1800L. OVERNIGHT RELATIVE
HUMIDITY RECOVERY WILL BE FAIR ACROSS WEST OF THE DIVIDE ZONES AND
EXCELLENT ACROSS EAST OF THE DIVIDE ZONES. SLIGHTLY WARMER WITH
SLIGHTLY LOWER MINIMUM RELATIVE HUMIDITY ON FRIDAY. THE NEXT SHOWER
OR THUNDERSTORM CHANCE IS SATURDAY AFTERNOON ACROSS ZONE 277.
..THUNDERSTORMS IMPLY STRONG GUSTY AND ERRATIC WINDS
WYZ280-192245-
NATRONA COUNTY/CASPER BLM-
INCLUDING THE CITIES OF CASPER AND MIDWEST
231 PM MDT THU SEP 18 2025
THIS AFTERNOON
SKY/WEATHER.........SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....69-74.
24 HR TREND......11 DEGREES WARMER.
MIN HUMIDITY........27-33 PERCENT.
24 HR TREND......25 PERCENT DRIER.
20-FOOT WINDS.......WEST WINDS AROUND 10 MPH AND GUSTY.
RIDGE TOP WINDS.....WEST AROUND 15 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST AROUND 15 MPH.
MIXING HEIGHT.......6000-7400 FT AGL.
SMOKE DISPERSAL.....GOOD.
TONIGHT
SKY/WEATHER.........MOSTLY CLEAR.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....41-46.
24 HR TREND......1 DEGREE COOLER.
MAX HUMIDITY........73-79 PERCENT.
24 HR TREND......12 PERCENT DRIER.
HUMIDITY RECOVERY...EXCELLENT.
20-FOOT WINDS.......DOWNSLOPE/DOWNVALLEY 4-7 MPH. GUSTS UP TO 15
MPH.
RIDGE TOP WINDS.....WEST AROUND 10 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....NORTHWEST AROUND 10 MPH.
MIXING HEIGHT.......2000-4000 FT AGL UNTIL 2400, THEN 400-600 FT
AGL.
SMOKE DISPERSAL.....POOR.
FRIDAY
SKY/WEATHER.........MOSTLY SUNNY THEN BECOMING PARTLY CLOUDY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....72-77.
24 HR TREND......3 DEGREES WARMER.
MIN HUMIDITY........24-30 PERCENT.
24 HR TREND......4 PERCENT DRIER.
20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH.
RIDGE TOP WINDS.....WEST AROUND 10 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST AROUND 10 MPH.
MIXING HEIGHT.......400-2400 FT AGL UNTIL 1200, THEN 4000-6000 FT
AGL.
SMOKE DISPERSAL.....POOR TO FAIR.
FRIDAY NIGHT
SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....47-52.
24 HR TREND......5 DEGREES WARMER.
MAX HUMIDITY........65-71 PERCENT.
24 HR TREND......12 PERCENT DRIER.
HUMIDITY RECOVERY...GOOD.
20-FOOT WINDS.......DOWNSLOPE/DOWNVALLEY 4-7 MPH. GUSTS UP TO 15
MPH.
RIDGE TOP WINDS.....NORTHEAST AROUND 10 MPH UNTIL 2400, THEN
SOUTHWEST.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....NORTHEAST AROUND 10 MPH UNTIL 2400, THEN SOUTH.
MIXING HEIGHT.......1600-3600 FT AGL UNTIL 2400, THEN 200-600 FT
AGL.
SMOKE DISPERSAL.....POOR.
SATURDAY
SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....74-79.
24 HR TREND......2 DEGREES WARMER.
MIN HUMIDITY........22-28 PERCENT.
24 HR TREND......1 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.....WEST 10 TO 15 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST 10 TO 15 MPH.
MIXING HEIGHT.......1200-3200 FT AGL UNTIL 1200, THEN 6200-8200 FT
AGL.
SMOKE DISPERSAL.....POOR UNTIL 1200, THEN GOOD.
FORECAST DAYS 3 THROUGH 7...
SATURDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 40S. 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 70S. WEST
WINDS AROUND 10 MPH.
MONDAY
COOLER. MOSTLY CLEAR WITH CHANCE OF SHOWERS AND SLIGHT
CHANCE OF THUNDERSTORMS. LOWS IN THE UPPER 30S. HIGHS IN THE
LOWER 60S. NORTH WINDS AROUND 10 MPH.
TUESDAY
CLEAR. LOWS IN THE LOWER 40S. HIGHS AROUND 70. WINDS
GENERALLY LESS THAN 10 MPH.
WEDNESDAY THROUGH THURSDAY
MOSTLY CLEAR. LOWS IN THE MID 40S.
HIGHS IN THE UPPER 70S.
WYZ283-192245-
UPPER WIND RIVER BASIN/WIND RIVER BASIN-
INCLUDING THE CITIES OF CROWHEART, LANDER, RIVERTON, AND SHOSHONI
231 PM MDT THU SEP 18 2025
THIS AFTERNOON
SKY/WEATHER.........SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....71-76.
24 HR TREND......8 DEGREES WARMER.
MIN HUMIDITY........23-29 PERCENT.
24 HR TREND......9 PERCENT DRIER.
20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH.
RIDGE TOP WINDS.....EAST AROUND 10 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....NORTHWEST AROUND 10 MPH.
MIXING HEIGHT.......5800-7000 FT AGL.
SMOKE DISPERSAL.....FAIR TO GOOD.
TONIGHT
SKY/WEATHER.........MOSTLY CLEAR.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....43-48.
24 HR TREND......3 DEGREES WARMER.
MAX HUMIDITY........57-63 PERCENT.
24 HR TREND......24 PERCENT DRIER.
HUMIDITY RECOVERY...GOOD.
20-FOOT WINDS.......DOWNSLOPE/DOWNVALLEY 4-7 MPH UNTIL 2400, THEN
NORTHWEST AROUND 10 MPH UNTIL 0300, THEN
DOWNSLOPE/DOWNVALLEY 4-7 MPH. GUSTS UP TO 15
MPH.
RIDGE TOP WINDS.....EAST AROUND 10 MPH UNTIL 2400, THEN NORTHWEST.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....NORTHEAST AROUND 10 MPH UNTIL 2400, THEN
NORTHWEST.
MIXING HEIGHT.......1800-3800 FT AGL UNTIL 2400, THEN 400-800 FT
AGL.
SMOKE DISPERSAL.....POOR.
FRIDAY
SKY/WEATHER.........MOSTLY SUNNY THEN BECOMING PARTLY CLOUDY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....72-77.
24 HR TREND......3 DEGREES WARMER.
MIN HUMIDITY........22-28 PERCENT.
24 HR TREND......2 PERCENT DRIER.
20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH. GUSTS UP TO 10 MPH.
RIDGE TOP WINDS.....WEST AROUND 10 MPH UNTIL 1200, THEN EAST.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....EAST AROUND 10 MPH UNTIL 1200, THEN SOUTHWEST.
MIXING HEIGHT.......600-2600 FT AGL UNTIL 1200, THEN 3800-5800 FT
AGL.
SMOKE DISPERSAL.....POOR.
FRIDAY NIGHT
SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....46-51.
24 HR TREND......5 DEGREES WARMER.
MAX HUMIDITY........50-56 PERCENT.
24 HR TREND......7 PERCENT DRIER.
HUMIDITY RECOVERY...MODERATE.
20-FOOT WINDS.......DOWNSLOPE/DOWNVALLEY 4-7 MPH UNTIL 2400, THEN
NORTHWEST AROUND 10 MPH UNTIL 0300, THEN
DOWNSLOPE/DOWNVALLEY 4-7 MPH. GUSTS UP TO 15
MPH.
RIDGE TOP WINDS.....NORTHEAST AROUND 10 MPH UNTIL 2400, THEN WEST.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....NORTHEAST AROUND 10 MPH UNTIL 2400, THEN
NORTHWEST.
MIXING HEIGHT.......1400-3400 FT AGL UNTIL 2400, THEN 400-800 FT
AGL.
SMOKE DISPERSAL.....POOR.
SATURDAY
SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....74-79.
24 HR TREND......1 DEGREE WARMER.
MIN HUMIDITY........22-28 PERCENT.
24 HR TREND......1 PERCENT DRIER.
20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH.
RIDGE TOP WINDS.....WEST AROUND 10 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST AROUND 10 MPH.
MIXING HEIGHT.......1600-3600 FT AGL UNTIL 1200, THEN 6200-8200 FT
AGL.
SMOKE DISPERSAL.....POOR UNTIL 1200, THEN GOOD.
FORECAST DAYS 3 THROUGH 7...
SATURDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 40S. SOUTHWEST
WINDS AROUND 10 MPH.
SUNDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS IN THE MID 40S. HIGHS IN THE MID 70S. WEST
WINDS AROUND 10 MPH.
MONDAY
COOLER. MOSTLY CLEAR. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS AROUND 40. HIGHS IN THE MID 60S. NORTH WINDS
AROUND 10 MPH.
TUESDAY
CLEAR. LOWS IN THE MID 40S. HIGHS IN THE LOWER 70S.
WINDS GENERALLY LESS THAN 10 MPH.
WEDNESDAY THROUGH THURSDAY
MOSTLY CLEAR. LOWS IN THE UPPER
40S. HIGHS IN THE UPPER 70S.
WYZ285-192245-
SOUTH BIGHORN MOUNTAINS-
231 PM MDT THU SEP 18 2025
THIS AFTERNOON
SKY/WEATHER.........MOSTLY SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....63-68.
24 HR TREND......9 DEGREES WARMER.
MIN HUMIDITY........32-38 PERCENT.
24 HR TREND......21 PERCENT DRIER.
20-FOOT WINDS.......NORTHWEST WINDS AROUND 10 MPH AND GUSTY.
RIDGE TOP WINDS.....NORTHWEST AROUND 15 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....NORTHWEST AROUND 15 MPH.
MIXING HEIGHT.......5000-6600 FT AGL.
SMOKE DISPERSAL.....FAIR TO GOOD.
TONIGHT
SKY/WEATHER.........MOSTLY CLEAR.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....43-48.
24 HR TREND......3 DEGREES WARMER.
MAX HUMIDITY........58-64 PERCENT.
24 HR TREND......28 PERCENT DRIER.
HUMIDITY RECOVERY...GOOD.
20-FOOT WINDS.......DOWNSLOPE/DOWNVALLEY 4-7 MPH UNTIL 2100, THEN
NORTHEAST AROUND 10 MPH UNTIL 0300, THEN
DOWNSLOPE/DOWNVALLEY 4-7 MPH. GUSTS UP TO 15
MPH.
RIDGE TOP WINDS.....NORTH AROUND 10 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....NORTH AROUND 10 MPH.
MIXING HEIGHT.......1400-3400 FT AGL UNTIL 2400, THEN 200-600 FT
AGL.
SMOKE DISPERSAL.....POOR.
FRIDAY
SKY/WEATHER.........MOSTLY SUNNY THEN BECOMING PARTLY CLOUDY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....68-73.
24 HR TREND......4 DEGREES WARMER.
MIN HUMIDITY........27-33 PERCENT.
24 HR TREND......4 PERCENT DRIER.
20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH UNTIL 1200, THEN WEST
AROUND 10 MPH UNTIL 1500, THEN UPSLOPE/UPVALLEY
5-9 MPH. GUSTS UP TO 15 MPH.
RIDGE TOP WINDS.....WEST AROUND 10 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....NORTHWEST AROUND 10 MPH.
MIXING HEIGHT.......800-2800 FT AGL UNTIL 1200, THEN 4200-6200 FT
AGL.
SMOKE DISPERSAL.....POOR TO FAIR.
FRIDAY NIGHT
SKY/WEATHER.........MOSTLY CLOUDY.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....47-52.
24 HR TREND......4 DEGREES WARMER.
MAX HUMIDITY........51-57 PERCENT.
24 HR TREND......7 PERCENT DRIER.
HUMIDITY RECOVERY...MODERATE.
20-FOOT WINDS.......DOWNSLOPE/DOWNVALLEY 4-7 MPH UNTIL 2100, THEN
NORTHEAST AROUND 10 MPH UNTIL 2400, THEN
DOWNSLOPE/DOWNVALLEY 4-7 MPH. GUSTS UP TO 15
MPH.
RIDGE TOP WINDS.....NORTHEAST AROUND 10 MPH UNTIL 2400, THEN
NORTHWEST.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....NORTHEAST AROUND 10 MPH UNTIL 2400, THEN WEST.
MIXING HEIGHT.......1000-3000 FT AGL UNTIL 2400, THEN 200-400 FT
AGL.
SMOKE DISPERSAL.....POOR.
SATURDAY
SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....69-74.
24 HR TREND......1 DEGREE WARMER.
MIN HUMIDITY........22-28 PERCENT.
24 HR TREND......1 PERCENT DRIER.
20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH UNTIL 1200, THEN
NORTHWEST AROUND 10 MPH. GUSTS UP TO 15 MPH.
RIDGE TOP WINDS.....WEST 10 TO 15 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST 10 TO 15 MPH.
MIXING HEIGHT.......1400-3400 FT AGL UNTIL 1200, THEN 6200-8200 FT
AGL.
SMOKE DISPERSAL.....POOR UNTIL 1200, THEN GOOD.
FORECAST DAYS 3 THROUGH 7...
SATURDAY NIGHT
MOSTLY CLEAR. LOWS AROUND 50. WEST WINDS AROUND
10 MPH.
SUNDAY
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND SLIGHT CHANCE
OF THUNDERSTORMS. LOWS IN THE MID 40S. HIGHS AROUND 70. WEST
WINDS AROUND 10 MPH.
MONDAY
COOLER. MOSTLY CLEAR WITH CHANCE OF SHOWERS AND SLIGHT
CHANCE OF THUNDERSTORMS. LOWS AROUND 40. HIGHS IN THE UPPER 50S.
NORTHWEST WINDS AROUND 10 MPH.
TUESDAY
CLEAR. LOWS IN THE MID 40S. HIGHS IN THE MID 60S.
SOUTH WINDS AROUND 10 MPH.
WEDNESDAY THROUGH THURSDAY
MOSTLY CLEAR. LOWS IN THE UPPER
40S. HIGHS IN THE LOWER 70S.
WYZ281-192245-
JOHNSON COUNTY/CASPER BLM-
INCLUDING THE CITIES OF BUFFALO AND KAYCEE
231 PM MDT THU SEP 18 2025
THIS AFTERNOON
SKY/WEATHER.........MOSTLY SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....66-71.
24 HR TREND......9 DEGREES WARMER.
MIN HUMIDITY........34-40 PERCENT.
24 HR TREND......19 PERCENT DRIER.
20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH.
RIDGE TOP WINDS.....NORTHEAST AROUND 10 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....NORTHWEST AROUND 10 MPH.
MIXING HEIGHT.......7000-8000 FT AGL.
SMOKE DISPERSAL.....GOOD.
TONIGHT
SKY/WEATHER.........MOSTLY CLEAR. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS LATE IN THE EVENING. CHANCE OF
PRECIPITATION 20 PERCENT.
CHANCE OF THUNDER...10 PERCENT.
MIN TEMPERATURE.....45-50.
24 HR TREND......4 DEGREES WARMER.
MAX HUMIDITY........76-82 PERCENT.
24 HR TREND......8 PERCENT DRIER.
HUMIDITY RECOVERY...EXCELLENT.
20-FOOT WINDS.......NORTHEAST WINDS AROUND 10 MPH UNTIL 2400, THEN
DOWNSLOPE/DOWNVALLEY 4-7 MPH. GUSTS UP TO 15
MPH.
RIDGE TOP WINDS.....NORTHEAST AROUND 10 MPH UNTIL 2400, THEN EAST.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....EAST AROUND 10 MPH.
MIXING HEIGHT.......2400-4400 FT AGL UNTIL 2400, THEN 400-800 FT
AGL.
SMOKE DISPERSAL.....POOR.
FRIDAY
SKY/WEATHER.........MOSTLY SUNNY THEN BECOMING PARTLY CLOUDY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....68-73.
24 HR TREND......2 DEGREES WARMER.
MIN HUMIDITY........31-37 PERCENT.
24 HR TREND......1 PERCENT WETTER.
20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH. GUSTS UP TO 10 MPH.
RIDGE TOP WINDS.....SOUTH AROUND 10 MPH UNTIL 1200, THEN NORTHEAST.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....SOUTH AROUND 10 MPH UNTIL 1200, THEN NORTHWEST.
MIXING HEIGHT.......600-2600 FT AGL UNTIL 1200, THEN 4200-6200 FT
AGL.
SMOKE DISPERSAL.....POOR TO FAIR.
FRIDAY NIGHT
SKY/WEATHER.........PARTLY CLOUDY.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....48-53.
24 HR TREND......4 DEGREES WARMER.
MAX HUMIDITY........62-68 PERCENT.
24 HR TREND......19 PERCENT DRIER.
HUMIDITY RECOVERY...GOOD.
20-FOOT WINDS.......DOWNSLOPE/DOWNVALLEY 4-7 MPH. GUSTS UP TO 15
MPH.
RIDGE TOP WINDS.....NORTHEAST AROUND 10 MPH UNTIL 2400, THEN
SOUTHWEST.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....EAST AROUND 10 MPH UNTIL 2400, THEN SOUTH.
MIXING HEIGHT.......1600-3600 FT AGL UNTIL 2400, THEN 400-600 FT
AGL.
SMOKE DISPERSAL.....POOR.
SATURDAY
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........26-32 PERCENT.
24 HR TREND......6 PERCENT DRIER.
20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH. GUSTS UP TO 15 MPH.
RIDGE TOP WINDS.....SOUTHWEST AROUND 10 MPH UNTIL 1200, THEN
NORTHEAST.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST AROUND 10 MPH.
MIXING HEIGHT.......1600-3600 FT AGL UNTIL 1200, THEN 6000-8000 FT
AGL.
SMOKE DISPERSAL.....POOR TO FAIR.
FORECAST DAYS 3 THROUGH 7...
SATURDAY NIGHT
MOSTLY CLEAR. LOWS AROUND 50. WINDS GENERALLY
LESS THAN 10 MPH.
SUNDAY
PARTLY CLOUDY. CHANCE OF SHOWERS AND SLIGHT CHANCE OF
THUNDERSTORMS. LOWS IN THE UPPER 40S. HIGHS AROUND 80. WEST WINDS
AROUND 10 MPH.
MONDAY
COOLER. PARTLY CLOUDY WITH CHANCE OF SHOWERS AND SLIGHT
CHANCE OF THUNDERSTORMS. LOWS IN THE LOWER 40S. HIGHS IN THE
LOWER 60S. NORTHWEST WINDS AROUND 10 MPH.
TUESDAY
CLEAR. LOWS IN THE MID 40S. HIGHS IN THE LOWER 70S.
WINDS GENERALLY LESS THAN 10 MPH.
WEDNESDAY THROUGH THURSDAY
MOSTLY CLEAR. LOWS IN THE UPPER
40S. HIGHS AROUND 80.
WYZ282-192245-
SOUTH BIGHORN BASIN/WORLAND BLM-
INCLUDING THE CITIES OF TEN SLEEP, THERMOPOLIS, AND WORLAND
231 PM MDT THU SEP 18 2025
THIS AFTERNOON
SKY/WEATHER.........SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....67-72.
24 HR TREND......7 DEGREES WARMER.
MIN HUMIDITY........25-31 PERCENT.
24 HR TREND......9 PERCENT DRIER.
20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH.
RIDGE TOP WINDS.....NORTHEAST AROUND 10 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....NORTH AROUND 10 MPH.
MIXING HEIGHT.......5200-6800 FT AGL.
SMOKE DISPERSAL.....FAIR TO GOOD.
TONIGHT
SKY/WEATHER.........MOSTLY CLEAR.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....43-48.
24 HR TREND......2 DEGREES WARMER.
MAX HUMIDITY........59-65 PERCENT.
24 HR TREND......19 PERCENT DRIER.
HUMIDITY RECOVERY...GOOD.
20-FOOT WINDS.......DOWNSLOPE/DOWNVALLEY 4-7 MPH. GUSTS UP TO 10
MPH.
RIDGE TOP WINDS.....NORTHEAST AROUND 10 MPH UNTIL 2400, THEN
SOUTHWEST.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....NORTHEAST AROUND 10 MPH UNTIL 2400, THEN WEST.
MIXING HEIGHT.......1600-3600 FT AGL UNTIL 2400, THEN 400-800 FT
AGL.
SMOKE DISPERSAL.....POOR.
FRIDAY
SKY/WEATHER.........MOSTLY SUNNY THEN BECOMING PARTLY CLOUDY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....70-75.
24 HR TREND......2 DEGREES WARMER.
MIN HUMIDITY........21-27 PERCENT.
24 HR TREND......3 PERCENT DRIER.
20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH. GUSTS UP TO 10 MPH.
RIDGE TOP WINDS.....SOUTHWEST AROUND 10 MPH UNTIL 1200, THEN NORTH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....SOUTHWEST AROUND 10 MPH UNTIL 1200, THEN NORTH.
MIXING HEIGHT.......600-2600 FT AGL UNTIL 1200, THEN 3800-5800 FT
AGL.
SMOKE DISPERSAL.....POOR.
FRIDAY NIGHT
SKY/WEATHER.........MOSTLY CLOUDY.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....47-52.
24 HR TREND......3 DEGREES WARMER.
MAX HUMIDITY........51-57 PERCENT.
24 HR TREND......8 PERCENT DRIER.
HUMIDITY RECOVERY...MODERATE.
20-FOOT WINDS.......DOWNSLOPE/DOWNVALLEY 4-7 MPH. GUSTS UP TO 10
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 SOUTH.
MIXING HEIGHT.......1400-3400 FT AGL UNTIL 2400, THEN 400-600 FT
AGL.
SMOKE DISPERSAL.....POOR.
SATURDAY
SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....72-77.
24 HR TREND......2 DEGREES WARMER.
MIN HUMIDITY........19-25 PERCENT.
24 HR TREND......2 PERCENT DRIER.
20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH. GUSTS UP TO 15 MPH.
RIDGE TOP WINDS.....SOUTHWEST AROUND 10 MPH UNTIL 1200, THEN NORTH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....SOUTHWEST AROUND 10 MPH UNTIL 1200, THEN
NORTHWEST.
MIXING HEIGHT.......800-2800 FT AGL UNTIL 1200, THEN 5000-7000 FT
AGL.
SMOKE DISPERSAL.....POOR TO FAIR.
FORECAST DAYS 3 THROUGH 7...
SATURDAY NIGHT
MOSTLY CLEAR. LOWS AROUND 50. WINDS GENERALLY
LESS THAN 10 MPH.
SUNDAY
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND SLIGHT CHANCE
OF THUNDERSTORMS. LOWS IN THE UPPER 40S. HIGHS IN THE UPPER 70S.
WINDS GENERALLY LESS THAN 10 MPH.
MONDAY
COOLER. MOSTLY CLEAR. CHANCE OF SHOWERS AND SLIGHT
CHANCE OF THUNDERSTORMS. LOWS IN THE LOWER 40S. HIGHS IN THE
UPPER 60S. NORTHWEST WINDS AROUND 10 MPH.
TUESDAY
CLEAR. LOWS IN THE MID 40S. HIGHS IN THE LOWER 70S.
WINDS GENERALLY LESS THAN 10 MPH.
WEDNESDAY
CLEAR. LOWS IN THE UPPER 40S. HIGHS AROUND 80.
THURSDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 70S.
WYZ275-192245-
NORTH BIGHORN BASIN/WORLAND BLM-
INCLUDING THE CITIES OF GREYBULL, LOVELL, AND POWELL
231 PM MDT THU SEP 18 2025
THIS AFTERNOON
SKY/WEATHER.........SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....64-69.
24 HR TREND......7 DEGREES WARMER.
MIN HUMIDITY........30-36 PERCENT.
24 HR TREND......8 PERCENT DRIER.
20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH.
RIDGE TOP WINDS.....EAST AROUND 10 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....NORTH AROUND 10 MPH.
MIXING HEIGHT.......5000-5800 FT AGL.
SMOKE DISPERSAL.....FAIR.
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....43-48.
24 HR TREND......2 DEGREES WARMER.
MAX HUMIDITY........62-68 PERCENT.
24 HR TREND......16 PERCENT DRIER.
HUMIDITY RECOVERY...GOOD.
20-FOOT WINDS.......DOWNSLOPE/DOWNVALLEY 4-7 MPH. GUSTS UP TO 10
MPH.
RIDGE TOP WINDS.....NORTH AROUND 10 MPH UNTIL 2400, THEN WEST.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....NORTH AROUND 10 MPH.
MIXING HEIGHT.......1600-3600 FT AGL UNTIL 2400, THEN 400-800 FT
AGL.
SMOKE DISPERSAL.....POOR.
FRIDAY
SKY/WEATHER.........MOSTLY SUNNY THEN BECOMING PARTLY CLOUDY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....68-73.
24 HR TREND......2 DEGREES WARMER.
MIN HUMIDITY........25-31 PERCENT.
24 HR TREND......2 PERCENT DRIER.
20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH. GUSTS UP TO 10 MPH.
RIDGE TOP WINDS.....WEST AROUND 10 MPH UNTIL 1200, THEN EAST.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST AROUND 10 MPH UNTIL 1200, THEN NORTH.
MIXING HEIGHT.......600-2600 FT AGL UNTIL 1200, THEN 3400-5400 FT
AGL.
SMOKE DISPERSAL.....POOR.
FRIDAY NIGHT
SKY/WEATHER.........PARTLY CLOUDY.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....47-52.
24 HR TREND......3 DEGREES WARMER.
MAX HUMIDITY........53-59 PERCENT.
24 HR TREND......9 PERCENT DRIER.
HUMIDITY RECOVERY...MODERATE.
20-FOOT WINDS.......DOWNSLOPE/DOWNVALLEY 4-7 MPH. GUSTS UP TO 10
MPH.
RIDGE TOP WINDS.....NORTH AROUND 10 MPH UNTIL 2400, THEN SOUTH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....NORTH AROUND 10 MPH UNTIL 2400, THEN SOUTH.
MIXING HEIGHT.......1200-3200 FT AGL UNTIL 2400, THEN 400-800 FT
AGL.
SMOKE DISPERSAL.....POOR.
SATURDAY
SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....69-74.
24 HR TREND......2 DEGREES WARMER.
MIN HUMIDITY........21-27 PERCENT.
24 HR TREND......2 PERCENT DRIER.
20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH. GUSTS UP TO 15 MPH.
RIDGE TOP WINDS.....SOUTHEAST AROUND 10 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....SOUTH AROUND 10 MPH UNTIL 1200, THEN WEST.
MIXING HEIGHT.......800-2800 FT AGL UNTIL 1200, THEN 4200-6200 FT
AGL.
SMOKE DISPERSAL.....POOR TO FAIR.
FORECAST DAYS 3 THROUGH 7...
SATURDAY NIGHT
MOSTLY CLEAR. LOWS IN THE LOWER 50S. WINDS
GENERALLY LESS THAN 10 MPH.
SUNDAY
PARTLY CLOUDY. CHANCE OF SHOWERS AND SLIGHT CHANCE OF
THUNDERSTORMS. LOWS IN THE UPPER 40S. HIGHS IN THE UPPER 70S.
WEST WINDS AROUND 10 MPH.
MONDAY
COOLER. MOSTLY CLEAR. SLIGHT CHANCE OF SHOWERS. LOWS IN
THE LOWER 40S. HIGHS IN THE UPPER 60S. NORTH WINDS AROUND 10 MPH.
TUESDAY
CLEAR. LOWS IN THE MID 40S. HIGHS IN THE MID 70S.
WINDS GENERALLY LESS THAN 10 MPH.
WEDNESDAY THROUGH THURSDAY
MOSTLY CLEAR. LOWS IN THE UPPER
40S. HIGHS IN THE UPPER 70S.
WYZ276-192245-
CODY FOOTHILLS-
INCLUDING THE CITIES OF CLARK, CODY, AND MEETEETSE
231 PM MDT THU SEP 18 2025
THIS AFTERNOON
SKY/WEATHER.........MOSTLY SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....69-74.
24 HR TREND......7 DEGREES WARMER.
MIN HUMIDITY........27-33 PERCENT.
24 HR TREND......6 PERCENT DRIER.
20-FOOT WINDS.......EAST WINDS AROUND 10 MPH AND GUSTY.
RIDGE TOP WINDS.....EAST AROUND 15 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....NORTHEAST AROUND 15 MPH.
MIXING HEIGHT.......5000-6600 FT AGL.
SMOKE DISPERSAL.....FAIR TO GOOD.
TONIGHT
SKY/WEATHER.........MOSTLY CLEAR.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....45-50.
24 HR TREND......3 DEGREES WARMER.
MAX HUMIDITY........56-62 PERCENT.
24 HR TREND......21 PERCENT DRIER.
HUMIDITY RECOVERY...MODERATE.
20-FOOT WINDS.......EAST WINDS AROUND 10 MPH UNTIL 2100, THEN
DOWNSLOPE/DOWNVALLEY 4-7 MPH UNTIL 2400, THEN
SOUTHWEST AROUND 10 MPH UNTIL 0300, THEN
DOWNSLOPE/DOWNVALLEY 4-7 MPH. GUSTS UP TO 15
MPH.
RIDGE TOP WINDS.....EAST AROUND 10 MPH UNTIL 2400, THEN WEST.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....NORTHEAST AROUND 10 MPH UNTIL 2400, THEN WEST.
MIXING HEIGHT.......1600-3600 FT AGL UNTIL 2400, THEN 600-1000 FT
AGL.
SMOKE DISPERSAL.....POOR.
FRIDAY
SKY/WEATHER.........MOSTLY SUNNY THEN BECOMING PARTLY CLOUDY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....70-75.
24 HR TREND......1 DEGREE WARMER.
MIN HUMIDITY........29-35 PERCENT.
24 HR TREND......2 PERCENT DRIER.
20-FOOT WINDS.......WEST WINDS AROUND 10 MPH UNTIL 0900, THEN
UPSLOPE/UPVALLEY 5-9 MPH UNTIL 1500, THEN EAST
AROUND 10 MPH. GUSTS UP TO 15 MPH.
RIDGE TOP WINDS.....NORTHWEST AROUND 10 MPH UNTIL 1200, THEN EAST.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST AROUND 10 MPH UNTIL 1200, THEN SOUTHEAST.
MIXING HEIGHT.......800-2800 FT AGL UNTIL 1200, THEN 3800-5800 FT
AGL.
SMOKE DISPERSAL.....POOR TO FAIR.
FRIDAY NIGHT
SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....49-54.
24 HR TREND......3 DEGREES WARMER.
MAX HUMIDITY........48-54 PERCENT.
24 HR TREND......6 PERCENT DRIER.
HUMIDITY RECOVERY...MODERATE.
20-FOOT WINDS.......DOWNSLOPE/DOWNVALLEY 4-7 MPH. GUSTS UP TO 15
MPH.
RIDGE TOP WINDS.....NORTHWEST AROUND 10 MPH UNTIL 2400, THEN
SOUTHWEST.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....NORTHEAST AROUND 10 MPH UNTIL 2400, THEN
SOUTHWEST.
MIXING HEIGHT.......1400-3400 FT AGL UNTIL 2400, THEN 600-1000 FT
AGL.
SMOKE DISPERSAL.....POOR.
SATURDAY
SKY/WEATHER.........MOSTLY SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....73-78.
24 HR TREND......3 DEGREES WARMER.
MIN HUMIDITY........25-31 PERCENT.
24 HR TREND......5 PERCENT DRIER.
20-FOOT WINDS.......SOUTHWEST WINDS AROUND 10 MPH UNTIL 0900, THEN
UPSLOPE/UPVALLEY 5-9 MPH UNTIL 1500, THEN
NORTHEAST AROUND 10 MPH. GUSTS UP TO 15 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.......1800-3800 FT AGL UNTIL 1200, THEN 6200-8200 FT
AGL.
SMOKE DISPERSAL.....POOR UNTIL 1200, THEN GOOD.
FORECAST DAYS 3 THROUGH 7...
SATURDAY NIGHT
MOSTLY CLEAR. LOWS IN THE LOWER 50S. WEST WINDS
AROUND 10 MPH.
SUNDAY
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND SLIGHT CHANCE
OF THUNDERSTORMS. LOWS IN THE MID 40S. HIGHS IN THE MID 70S. WEST
WINDS AROUND 10 MPH.
MONDAY
COOLER. MOSTLY CLEAR. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS IN THE LOWER 40S. HIGHS IN THE LOWER 60S.
NORTHWEST WINDS AROUND 10 MPH.
TUESDAY
CLEAR. LOWS IN THE UPPER 40S. HIGHS IN THE LOWER 70S.
WINDS GENERALLY LESS THAN 10 MPH.
WEDNESDAY
MOSTLY CLEAR. LOWS AROUND 50. HIGHS IN THE MID 70S.
THURSDAY
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE AFTERNOON. HIGHS IN THE MID 70S.
WYZ287-192245-
OWL CREEK MOUNTAINS-
231 PM MDT THU SEP 18 2025
THIS AFTERNOON
SKY/WEATHER.........SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....64-69.
24 HR TREND......8 DEGREES WARMER.
MIN HUMIDITY........27-33 PERCENT.
24 HR TREND......6 PERCENT DRIER.
20-FOOT WINDS.......SOUTHEAST WINDS AROUND 10 MPH AND GUSTY.
RIDGE TOP WINDS.....SOUTHEAST AROUND 15 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....NORTHEAST AROUND 15 MPH.
MIXING HEIGHT.......4600-6400 FT AGL.
SMOKE DISPERSAL.....FAIR TO GOOD.
TONIGHT
SKY/WEATHER.........MOSTLY CLEAR.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....44-49.
24 HR TREND......4 DEGREES WARMER.
MAX HUMIDITY........49-55 PERCENT.
24 HR TREND......27 PERCENT DRIER.
HUMIDITY RECOVERY...MODERATE.
20-FOOT WINDS.......DOWNSLOPE/DOWNVALLEY 4-7 MPH. GUSTS UP TO 15
MPH.
RIDGE TOP WINDS.....EAST AROUND 10 MPH UNTIL 2400, THEN WEST.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....NORTHEAST AROUND 10 MPH UNTIL 2400, THEN
NORTHWEST.
MIXING HEIGHT.......1400-3400 FT AGL UNTIL 2400, THEN 200-600 FT
AGL.
SMOKE DISPERSAL.....POOR.
FRIDAY
SKY/WEATHER.........MOSTLY SUNNY THEN BECOMING PARTLY CLOUDY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....68-73.
24 HR TREND......3 DEGREES WARMER.
MIN HUMIDITY........22-28 PERCENT.
24 HR TREND......4 PERCENT DRIER.
20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH UNTIL 1500, THEN EAST
AROUND 10 MPH. GUSTS UP TO 15 MPH.
RIDGE TOP WINDS.....WEST AROUND 10 MPH UNTIL 1200, THEN EAST.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....SOUTHWEST AROUND 10 MPH UNTIL 1200, THEN SOUTH.
MIXING HEIGHT.......600-2600 FT AGL UNTIL 1200, THEN 4000-6000 FT
AGL.
SMOKE DISPERSAL.....POOR TO FAIR.
FRIDAY NIGHT
SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....47-52.
24 HR TREND......3 DEGREES WARMER.
MAX HUMIDITY........44-50 PERCENT.
24 HR TREND......6 PERCENT DRIER.
HUMIDITY RECOVERY...MODERATE.
20-FOOT WINDS.......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.....NORTHEAST AROUND 10 MPH UNTIL 2400, THEN
SOUTHWEST.
MIXING HEIGHT.......1200-3200 FT AGL UNTIL 2400, THEN 200-600 FT
AGL.
SMOKE DISPERSAL.....POOR.
SATURDAY
SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....69-74.
24 HR TREND......1 DEGREE WARMER.
MIN HUMIDITY........23-29 PERCENT.
24 HR TREND......1 PERCENT DRIER.
20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH UNTIL 1500, 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.....WEST AROUND 10 MPH.
MIXING HEIGHT.......1200-3200 FT AGL UNTIL 1200, THEN 5800-7800 FT
AGL.
SMOKE DISPERSAL.....POOR TO FAIR.
FORECAST DAYS 3 THROUGH 7...
SATURDAY NIGHT
MOSTLY CLEAR. LOWS IN THE LOWER 50S. WEST WINDS
AROUND 10 MPH.
SUNDAY
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND SLIGHT CHANCE
OF THUNDERSTORMS. LOWS IN THE MID 40S. HIGHS IN THE LOWER 70S.
WEST WINDS AROUND 10 MPH.
MONDAY
COOLER. MOSTLY CLEAR. CHANCE OF SHOWERS AND SLIGHT
CHANCE OF THUNDERSTORMS. LOWS IN THE LOWER 40S. HIGHS IN THE
LOWER 60S. NORTH WINDS AROUND 10 MPH.
TUESDAY
CLEAR. LOWS IN THE MID 40S. HIGHS IN THE UPPER 60S.
WINDS GENERALLY LESS THAN 10 MPH.
WEDNESDAY THROUGH THURSDAY
MOSTLY CLEAR. LOWS IN THE UPPER
40S. HIGHS IN THE LOWER 70S.
WYZ286-192245-
ABSAROKA MOUNTAINS/NORTH SHOSHONE NF-
INCLUDING THE CITY OF PAHASKA
231 PM MDT THU SEP 18 2025
THIS AFTERNOON
SKY/WEATHER.........MOSTLY SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....62-67.
24 HR TREND......6 DEGREES WARMER.
MIN HUMIDITY........32-38 PERCENT.
24 HR TREND......7 PERCENT DRIER.
20-FOOT WINDS.......NORTHWEST WINDS AROUND 10 MPH WITH HIGHER
GUSTS.
RIDGE TOP WINDS.....NORTHWEST AROUND 15 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST AROUND 15 MPH.
MIXING HEIGHT.......5600-7400 FT AGL.
SMOKE DISPERSAL.....GOOD.
TONIGHT
SKY/WEATHER.........MOSTLY CLEAR.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....40-45.
24 HR TREND......4 DEGREES WARMER.
MAX HUMIDITY........60-66 PERCENT.
24 HR TREND......31 PERCENT DRIER.
HUMIDITY RECOVERY...GOOD.
20-FOOT WINDS.......NORTHWEST WINDS AROUND 10 MPH UNTIL 2100, THEN
DOWNSLOPE/DOWNVALLEY 4-7 MPH. GUSTS UP TO 15
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 2400, THEN 400-1000 FT
AGL.
SMOKE DISPERSAL.....POOR.
FRIDAY
SKY/WEATHER.........PARTLY CLOUDY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....63-68.
24 HR TREND......1 DEGREE WARMER.
MIN HUMIDITY........29-35 PERCENT.
24 HR TREND......2 PERCENT DRIER.
20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH UNTIL 1500, THEN SOUTH
AROUND 10 MPH. GUSTS UP TO 15 MPH.
RIDGE TOP WINDS.....WEST AROUND 10 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST AROUND 10 MPH.
MIXING HEIGHT.......1400-3400 FT AGL UNTIL 1200, THEN 4800-6800 FT
AGL.
SMOKE DISPERSAL.....POOR TO FAIR.
FRIDAY NIGHT
SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....43-48.
24 HR TREND......4 DEGREES WARMER.
MAX HUMIDITY........57-63 PERCENT.
24 HR TREND......6 PERCENT DRIER.
HUMIDITY RECOVERY...GOOD.
20-FOOT WINDS.......EAST WINDS AROUND 10 MPH UNTIL 2100, THEN
DOWNSLOPE/DOWNVALLEY 4-7 MPH UNTIL 2400, THEN
WEST AROUND 10 MPH. GUSTS UP TO 15 MPH.
RIDGE TOP WINDS.....SOUTH AROUND 10 MPH UNTIL 2400, THEN WEST.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....SOUTHEAST AROUND 10 MPH UNTIL 2400, THEN WEST.
MIXING HEIGHT.......1400-3400 FT AGL UNTIL 2400, THEN 400-1000 FT
AGL.
SMOKE DISPERSAL.....POOR.
SATURDAY
SKY/WEATHER.........PARTLY CLOUDY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....65-70.
24 HR TREND......UNCHANGED.
MIN HUMIDITY........27-33 PERCENT.
24 HR TREND......2 PERCENT DRIER.
20-FOOT WINDS.......WEST WINDS 10 TO 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 15 MPH.
MIXING HEIGHT.......2000-4000 FT AGL UNTIL 1200, THEN 7000-9000 FT
AGL.
SMOKE DISPERSAL.....POOR TO FAIR UNTIL 1200, THEN VERY GOOD.
FORECAST DAYS 3 THROUGH 7...
SATURDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 40S. WEST WINDS
AROUND 10 MPH.
SUNDAY
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND THUNDERSTORMS.
LOWS IN THE UPPER 30S. HIGHS AROUND 60. WEST WINDS AROUND 15 MPH.
MONDAY
MOSTLY CLEAR. SLIGHT CHANCE OF SHOWERS, THUNDERSTORMS
AND SNOW SHOWERS. LOWS IN THE UPPER 30S. HIGHS IN THE MID 50S.
NORTHWEST WINDS AROUND 10 MPH.
TUESDAY
CLEAR. LOWS IN THE LOWER 40S. HIGHS IN THE MID 60S.
SOUTHWEST WINDS AROUND 10 MPH.
WEDNESDAY
MOSTLY CLEAR. LOWS IN THE MID 40S. HIGHS IN THE
UPPER 60S.
THURSDAY
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE AFTERNOON. HIGHS IN THE LOWER 60S.
WYZ140-192245-
YELLOWSTONE NATIONAL PARK-
INCLUDING THE CITIES OF LAKE, MAMMOTH, AND OLD FAITHFUL
231 PM MDT THU SEP 18 2025
THIS AFTERNOON
SKY/WEATHER.........MOSTLY SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....65-70.
24 HR TREND......3 DEGREES WARMER.
MIN HUMIDITY........30-36 PERCENT.
24 HR TREND......1 PERCENT WETTER.
20-FOOT WINDS.......WEST WINDS AROUND 10 MPH AND GUSTY.
RIDGE TOP WINDS.....WEST AROUND 15 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST AROUND 15 MPH.
MIXING HEIGHT.......5800-7200 FT AGL.
SMOKE DISPERSAL.....GOOD.
TONIGHT
SKY/WEATHER.........MOSTLY CLEAR.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....35-40.
24 HR TREND......4 DEGREES WARMER.
MAX HUMIDITY........71-77 PERCENT.
24 HR TREND......25 PERCENT DRIER.
HUMIDITY RECOVERY...EXCELLENT.
20-FOOT WINDS.......WEST WINDS AROUND 10 MPH WITH GUSTS TO AROUND
15 MPH UNTIL 2100, THEN DOWNSLOPE/DOWNVALLEY
4-7 MPH.
RIDGE TOP WINDS.....WEST AROUND 10 MPH UNTIL 2400, THEN SOUTHEAST.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST AROUND 10 MPH UNTIL 2400, THEN SOUTHEAST.
MIXING HEIGHT.......2400-4400 FT AGL UNTIL 2400, THEN 400-800 FT
AGL.
SMOKE DISPERSAL.....POOR.
FRIDAY
SKY/WEATHER.........PARTLY CLOUDY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....67-72.
24 HR TREND......2 DEGREES WARMER.
MIN HUMIDITY........27-33 PERCENT.
24 HR TREND......6 PERCENT DRIER.
20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH. GUSTS UP TO 10 MPH.
RIDGE TOP WINDS.....SOUTH AROUND 10 MPH UNTIL 1200, THEN WEST.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....SOUTHEAST AROUND 10 MPH UNTIL 1200, THEN WEST.
MIXING HEIGHT.......1200-3200 FT AGL UNTIL 1200, THEN 5400-7400 FT
AGL.
SMOKE DISPERSAL.....POOR TO FAIR.
FRIDAY NIGHT
SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....37-42.
24 HR TREND......3 DEGREES WARMER.
MAX HUMIDITY........66-72 PERCENT.
24 HR TREND......5 PERCENT DRIER.
HUMIDITY RECOVERY...GOOD.
20-FOOT WINDS.......DOWNSLOPE/DOWNVALLEY 4-7 MPH. GUSTS UP TO 15
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.......2000-4000 FT AGL UNTIL 2400, THEN 400-800 FT
AGL.
SMOKE DISPERSAL.....POOR.
SATURDAY
SKY/WEATHER.........MOSTLY SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....67-72.
24 HR TREND......1 DEGREE COOLER.
MIN HUMIDITY........29-35 PERCENT.
24 HR TREND......2 PERCENT WETTER.
20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH UNTIL 1200, 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.....SOUTHWEST 10 TO 15 MPH.
MIXING HEIGHT.......1800-3800 FT AGL UNTIL 1200, THEN 6800-8800 FT
AGL.
SMOKE DISPERSAL.....POOR UNTIL 1200, THEN GOOD TO VERY GOOD.
FORECAST DAYS 3 THROUGH 7...
SATURDAY NIGHT
MOSTLY CLEAR. LOWS AROUND 40. WINDS GENERALLY
LESS THAN 10 MPH.
SUNDAY
COOLER. MOSTLY CLOUDY. CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS IN THE MID 30S. HIGHS AROUND 60. SOUTHWEST
WINDS AROUND 10 MPH.
MONDAY
MOSTLY CLEAR. SLIGHT CHANCE OF SHOWERS. LOWS IN THE
LOWER 30S. HIGHS IN THE MID 50S. WINDS GENERALLY LESS THAN
10 MPH.
TUESDAY
WARMER, CLEAR. LOWS IN THE MID 30S. HIGHS IN THE MID
60S. WINDS GENERALLY LESS THAN 10 MPH.
WEDNESDAY
MOSTLY CLEAR. LOWS IN THE UPPER 30S. HIGHS IN THE
UPPER 60S.
THURSDAY
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE AFTERNOON. HIGHS IN THE LOWER 60S.
WYZ415-192245-
NORTH ZONE BRIDGER TETON NF AND GRAND TETON NP-
INCLUDING THE CITIES OF JACKSON AND MORAN
231 PM MDT THU SEP 18 2025
THIS AFTERNOON
SKY/WEATHER.........SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....64-69.
24 HR TREND......4 DEGREES WARMER.
MIN HUMIDITY........31-37 PERCENT.
24 HR TREND......1 PERCENT WETTER.
20-FOOT WINDS.......WEST WINDS AROUND 10 MPH AND GUSTY.
RIDGE TOP WINDS.....WEST AROUND 15 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST AROUND 15 MPH.
MIXING HEIGHT.......5200-6600 FT AGL.
SMOKE DISPERSAL.....GOOD.
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....36-41.
24 HR TREND......3 DEGREES WARMER.
MAX HUMIDITY........65-71 PERCENT.
24 HR TREND......25 PERCENT DRIER.
HUMIDITY RECOVERY...GOOD.
20-FOOT WINDS.......DOWNSLOPE/DOWNVALLEY 4-7 MPH. GUSTS UP TO 15
MPH.
RIDGE TOP WINDS.....NORTHWEST AROUND 10 MPH UNTIL 2400, THEN
NORTHEAST.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....NORTHWEST AROUND 10 MPH UNTIL 2400, THEN EAST.
MIXING HEIGHT.......2000-4000 FT AGL UNTIL 2400, THEN 400-1000 FT
AGL.
SMOKE DISPERSAL.....POOR.
FRIDAY
SKY/WEATHER.........PARTLY CLOUDY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....66-71.
24 HR TREND......2 DEGREES WARMER.
MIN HUMIDITY........26-32 PERCENT.
24 HR TREND......6 PERCENT DRIER.
20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH. GUSTS UP TO 15 MPH.
RIDGE TOP WINDS.....SOUTHEAST AROUND 10 MPH UNTIL 1200, THEN WEST.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....EAST AROUND 10 MPH UNTIL 1200, THEN WEST.
MIXING HEIGHT.......1000-3000 FT AGL UNTIL 1200, THEN 4800-6800 FT
AGL.
SMOKE DISPERSAL.....POOR TO FAIR.
FRIDAY NIGHT
SKY/WEATHER.........MOSTLY CLOUDY.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....39-44.
24 HR TREND......4 DEGREES WARMER.
MAX HUMIDITY........63-69 PERCENT.
24 HR TREND......6 PERCENT DRIER.
HUMIDITY RECOVERY...GOOD.
20-FOOT WINDS.......DOWNSLOPE/DOWNVALLEY 4-7 MPH. GUSTS UP TO 15
MPH.
RIDGE TOP WINDS.....WEST 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.......1800-3800 FT AGL UNTIL 2400, THEN 400-1000 FT
AGL.
SMOKE DISPERSAL.....POOR.
SATURDAY
SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....64-69.
24 HR TREND......2 DEGREES COOLER.
MIN HUMIDITY........34-40 PERCENT.
24 HR TREND......6 PERCENT WETTER.
20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH UNTIL 1200, 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.....WEST 10 TO 15 MPH.
MIXING HEIGHT.......1800-3800 FT AGL UNTIL 1200, THEN 6600-8600 FT
AGL.
SMOKE DISPERSAL.....POOR UNTIL 1200, THEN GOOD.
FORECAST DAYS 3 THROUGH 7...
SATURDAY NIGHT
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE EVENING, THEN SLIGHT CHANCE OF SHOWERS AFTER
MIDNIGHT. LOWS IN THE LOWER 40S. WINDS GENERALLY LESS THAN
10 MPH.
SUNDAY
PARTLY CLOUDY. CHANCE OF SHOWERS AND THUNDERSTORMS.
LOWS IN THE MID 30S. HIGHS IN THE UPPER 50S. SOUTHWEST WINDS
AROUND 10 MPH.
MONDAY
MOSTLY CLEAR. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS IN THE LOWER 30S. HIGHS IN THE MID 50S. WINDS
GENERALLY LESS THAN 10 MPH.
TUESDAY
CLEAR. LOWS IN THE UPPER 30S. HIGHS IN THE MID 60S.
WINDS GENERALLY LESS THAN 10 MPH.
WEDNESDAY
MOSTLY CLEAR. LOWS AROUND 40. HIGHS IN THE UPPER
60S.
THURSDAY
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE AFTERNOON. HIGHS IN THE MID 60S.
WYZ416-192245-
WEST WIND RIVER MOUNTAINS/EAST ZONE BRIDGER TETON NF-
231 PM MDT THU SEP 18 2025
THIS AFTERNOON
SKY/WEATHER.........SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....60-65.
24 HR TREND......5 DEGREES WARMER.
MIN HUMIDITY........32-38 PERCENT.
24 HR TREND......8 PERCENT DRIER.
20-FOOT WINDS.......WEST WINDS AROUND 10 MPH AND GUSTY.
RIDGE TOP WINDS.....WEST AROUND 15 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST AROUND 15 MPH.
MIXING HEIGHT.......4800-6000 FT AGL.
SMOKE DISPERSAL.....GOOD.
TONIGHT
SKY/WEATHER.........CLEAR THEN BECOMING PARTLY CLOUDY.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....35-40.
24 HR TREND......5 DEGREES WARMER.
MAX HUMIDITY........58-64 PERCENT.
24 HR TREND......39 PERCENT DRIER.
HUMIDITY RECOVERY...GOOD.
20-FOOT WINDS.......WEST WINDS AROUND 10 MPH UNTIL 2100, THEN
DOWNSLOPE/DOWNVALLEY 4-7 MPH. GUSTS UP TO 15
MPH.
RIDGE TOP WINDS.....NORTHWEST AROUND 10 MPH UNTIL 2400, THEN
NORTHEAST.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....NORTHWEST AROUND 10 MPH.
MIXING HEIGHT.......1800-3800 FT AGL UNTIL 2400, THEN 400-800 FT
AGL.
SMOKE DISPERSAL.....POOR.
FRIDAY
SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....63-68.
24 HR TREND......5 DEGREES WARMER.
MIN HUMIDITY........23-29 PERCENT.
24 HR TREND......10 PERCENT DRIER.
20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH UNTIL 1200, THEN
SOUTHWEST AROUND 10 MPH. GUSTS UP TO 15 MPH.
RIDGE TOP WINDS.....SOUTHEAST AROUND 10 MPH UNTIL 1200, THEN
SOUTHWEST.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....NORTHWEST AROUND 10 MPH UNTIL 1200, THEN WEST.
MIXING HEIGHT.......1400-3400 FT AGL UNTIL 1200, THEN 5000-7000 FT
AGL.
SMOKE DISPERSAL.....POOR TO FAIR.
FRIDAY NIGHT
SKY/WEATHER.........MOSTLY CLOUDY.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....39-44.
24 HR TREND......4 DEGREES WARMER.
MAX HUMIDITY........52-58 PERCENT.
24 HR TREND......5 PERCENT DRIER.
HUMIDITY RECOVERY...MODERATE.
20-FOOT WINDS.......DOWNSLOPE/DOWNVALLEY 4-7 MPH. GUSTS UP TO 15
MPH.
RIDGE TOP WINDS.....NORTHWEST AROUND 10 MPH UNTIL 2400, THEN NORTH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....NORTHWEST AROUND 10 MPH.
MIXING HEIGHT.......2000-4000 FT AGL UNTIL 2400, THEN 400-800 FT
AGL.
SMOKE DISPERSAL.....POOR.
SATURDAY
SKY/WEATHER.........PARTLY CLOUDY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....60-65.
24 HR TREND......2 DEGREES COOLER.
MIN HUMIDITY........30-36 PERCENT.
24 HR TREND......6 PERCENT WETTER.
20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH UNTIL 0900, 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.......2000-4000 FT AGL UNTIL 1200, THEN 6800-8800 FT
AGL.
SMOKE DISPERSAL.....POOR TO FAIR UNTIL 1200, THEN GOOD TO VERY
GOOD.
FORECAST DAYS 3 THROUGH 7...
SATURDAY NIGHT
PARTLY CLOUDY. LOWS AROUND 40. WINDS GENERALLY
LESS THAN 10 MPH.
SUNDAY
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND THUNDERSTORMS.
LOWS IN THE MID 30S. HIGHS IN THE UPPER 50S. WEST WINDS AROUND
10 MPH.
MONDAY
MOSTLY CLEAR. SLIGHT CHANCE OF SHOWERS, THUNDERSTORMS
AND SNOW SHOWERS. LOWS IN THE LOWER 30S. HIGHS IN THE LOWER 50S.
NORTHWEST WINDS AROUND 10 MPH.
TUESDAY
CLEAR. LOWS IN THE MID 30S. HIGHS IN THE LOWER 60S.
WINDS GENERALLY LESS THAN 10 MPH.
WEDNESDAY
MOSTLY CLEAR. LOWS IN THE UPPER 30S. HIGHS IN THE
MID 60S.
THURSDAY
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE AFTERNOON. HIGHS IN THE LOWER 60S.
WYZ288-192245-
EAST WIND RIVER MOUNTAINS/SOUTH SHOSHONE NF-
INCLUDING THE CITIES OF DUBOIS AND SOUTH PASS
231 PM MDT THU SEP 18 2025
THIS AFTERNOON
SKY/WEATHER.........MOSTLY SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....61-66.
24 HR TREND......8 DEGREES WARMER.
MIN HUMIDITY........31-37 PERCENT.
24 HR TREND......15 PERCENT DRIER.
20-FOOT WINDS.......WEST WINDS AROUND 10 MPH WITH HIGHER GUSTS.
RIDGE TOP WINDS.....WEST AROUND 15 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST AROUND 15 MPH.
MIXING HEIGHT.......5200-6400 FT AGL.
SMOKE DISPERSAL.....GOOD.
TONIGHT
SKY/WEATHER.........MOSTLY CLEAR.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....39-44.
24 HR TREND......6 DEGREES WARMER.
MAX HUMIDITY........51-57 PERCENT.
24 HR TREND......35 PERCENT DRIER.
HUMIDITY RECOVERY...MODERATE.
20-FOOT WINDS.......WEST WINDS AROUND 10 MPH UNTIL 0300, THEN
DOWNSLOPE/DOWNVALLEY 4-7 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 2400, THEN 400-800 FT
AGL.
SMOKE DISPERSAL.....POOR.
FRIDAY
SKY/WEATHER.........PARTLY CLOUDY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....65-70.
24 HR TREND......3 DEGREES WARMER.
MIN HUMIDITY........24-30 PERCENT.
24 HR TREND......6 PERCENT DRIER.
20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH UNTIL 1200, THEN SOUTH
AROUND 10 MPH UNTIL 1500, THEN SOUTHWEST. GUSTS
UP TO 15 MPH.
RIDGE TOP WINDS.....WEST AROUND 10 MPH UNTIL 1200, THEN SOUTH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST 10 TO 15 MPH.
MIXING HEIGHT.......1200-3200 FT AGL UNTIL 1200, THEN 4600-6600 FT
AGL.
SMOKE DISPERSAL.....POOR TO FAIR.
FRIDAY NIGHT
SKY/WEATHER.........MOSTLY CLOUDY.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....42-47.
24 HR TREND......4 DEGREES WARMER.
MAX HUMIDITY........43-49 PERCENT.
24 HR TREND......7 PERCENT DRIER.
HUMIDITY RECOVERY...MODERATE.
20-FOOT WINDS.......DOWNSLOPE/DOWNVALLEY 4-7 MPH UNTIL 0300, THEN
WEST AROUND 10 MPH. GUSTS UP TO 15 MPH.
RIDGE TOP WINDS.....WEST AROUND 10 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST AROUND 10 MPH.
MIXING HEIGHT.......1600-3600 FT AGL UNTIL 2400, THEN 200-800 FT
AGL.
SMOKE DISPERSAL.....POOR.
SATURDAY
SKY/WEATHER.........PARTLY CLOUDY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....63-68.
24 HR TREND......1 DEGREE COOLER.
MIN HUMIDITY........28-34 PERCENT.
24 HR TREND......2 PERCENT WETTER.
20-FOOT WINDS.......WEST WINDS AROUND 10 MPH WITH GUSTS TO AROUND
25 MPH.
RIDGE TOP WINDS.....WEST AROUND 15 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST AROUND 15 MPH.
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...
SATURDAY NIGHT
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AFTER
MIDNIGHT. LOWS IN THE MID 40S. WEST WINDS AROUND 10 MPH.
SUNDAY
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND SLIGHT CHANCE
OF THUNDERSTORMS. LOWS AROUND 40. HIGHS IN THE LOWER 60S. WEST
WINDS AROUND 15 MPH.
MONDAY
MOSTLY CLEAR. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS IN THE UPPER 30S. HIGHS IN THE MID 50S.
NORTHWEST WINDS AROUND 10 MPH.
TUESDAY
CLEAR. LOWS IN THE LOWER 40S. HIGHS IN THE LOWER 60S.
WINDS GENERALLY LESS THAN 10 MPH.
WEDNESDAY
MOSTLY CLEAR. LOWS IN THE MID 40S. HIGHS IN THE MID
60S.
THURSDAY
MOSTLY SUNNY. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE AFTERNOON. HIGHS IN THE MID 60S.
WYZ414-192245-
SALT AND WYOMING RANGES/WEST ZONE BRIDGER TETON NF-
INCLUDING THE CITY OF AFTON
231 PM MDT THU SEP 18 2025
THIS AFTERNOON
SKY/WEATHER.........SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....62-67.
24 HR TREND......3 DEGREES WARMER.
MIN HUMIDITY........28-34 PERCENT.
24 HR TREND......3 PERCENT DRIER.
20-FOOT WINDS.......WEST WINDS AROUND 10 MPH AND GUSTY.
RIDGE TOP WINDS.....WEST AROUND 15 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST AROUND 15 MPH.
MIXING HEIGHT.......5200-6600 FT AGL.
SMOKE DISPERSAL.....FAIR TO GOOD.
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....36-41.
24 HR TREND......5 DEGREES WARMER.
MAX HUMIDITY........60-66 PERCENT.
24 HR TREND......29 PERCENT DRIER.
HUMIDITY RECOVERY...GOOD.
20-FOOT WINDS.......DOWNSLOPE/DOWNVALLEY 4-7 MPH. GUSTS UP TO 15
MPH.
RIDGE TOP WINDS.....NORTHWEST AROUND 10 MPH UNTIL 2400, THEN
SOUTHEAST.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....NORTHWEST AROUND 10 MPH UNTIL 2400, THEN
SOUTHEAST.
MIXING HEIGHT.......2000-4000 FT AGL UNTIL 2400, THEN 400-1000 FT
AGL.
SMOKE DISPERSAL.....POOR.
FRIDAY
SKY/WEATHER.........PARTLY CLOUDY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....65-70.
24 HR TREND......2 DEGREES WARMER.
MIN HUMIDITY........21-27 PERCENT.
24 HR TREND......7 PERCENT DRIER.
20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH UNTIL 1500, THEN WEST
AROUND 10 MPH. GUSTS UP TO 15 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.......1200-3200 FT AGL UNTIL 1200, THEN 5400-7400 FT
AGL.
SMOKE DISPERSAL.....POOR TO FAIR.
FRIDAY NIGHT
SKY/WEATHER.........MOSTLY CLOUDY.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....40-45.
24 HR TREND......4 DEGREES WARMER.
MAX HUMIDITY........62-68 PERCENT.
24 HR TREND......2 PERCENT WETTER.
HUMIDITY RECOVERY...GOOD.
20-FOOT WINDS.......DOWNSLOPE/DOWNVALLEY 4-7 MPH. GUSTS UP TO 20
MPH.
RIDGE TOP WINDS.....WEST AROUND 10 MPH UNTIL 2400, THEN SOUTH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST AROUND 10 MPH.
MIXING HEIGHT.......2000-4000 FT AGL UNTIL 2400, THEN 400-1000 FT
AGL.
SMOKE DISPERSAL.....POOR.
SATURDAY
SKY/WEATHER.........PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS IN THE
AFTERNOON. CHANCE OF SHOWERS 20 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....64-69.
24 HR TREND......2 DEGREES COOLER.
MIN HUMIDITY........31-37 PERCENT.
24 HR TREND......11 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.......2000-4000 FT AGL UNTIL 1200, THEN 6200-8200 FT
AGL.
SMOKE DISPERSAL.....POOR UNTIL 1200, THEN GOOD.
FORECAST DAYS 3 THROUGH 7...
SATURDAY NIGHT
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS IN THE LOWER 40S. WINDS GENERALLY LESS THAN
10 MPH.
SUNDAY
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND THUNDERSTORMS.
LOWS IN THE UPPER 30S. HIGHS IN THE UPPER 50S. WEST WINDS AROUND
10 MPH.
MONDAY
CLEAR. LOWS IN THE MID 30S. HIGHS IN THE UPPER 50S.
NORTHWEST WINDS AROUND 10 MPH.
TUESDAY
CLEAR. LOWS IN THE UPPER 30S. HIGHS IN THE MID 60S.
WINDS GENERALLY LESS THAN 10 MPH.
WEDNESDAY
MOSTLY CLEAR. LOWS IN THE LOWER 40S. HIGHS IN THE
UPPER 60S.
THURSDAY
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE AFTERNOON. HIGHS IN THE MID 60S.
WYZ278-192245-
UPPER GREEN RIVER BASIN/ROCK SPRINGS BLM-
INCLUDING THE CITIES OF BIG PINEY, FARSON, AND PINEDALE
231 PM MDT THU SEP 18 2025
THIS AFTERNOON
SKY/WEATHER.........MOSTLY SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....63-68.
24 HR TREND......6 DEGREES WARMER.
MIN HUMIDITY........25-31 PERCENT.
24 HR TREND......6 PERCENT DRIER.
20-FOOT WINDS.......WEST WINDS AROUND 10 MPH AND GUSTY.
RIDGE TOP WINDS.....WEST AROUND 10 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST AROUND 10 MPH.
MIXING HEIGHT.......5800-6600 FT AGL.
SMOKE DISPERSAL.....FAIR TO GOOD.
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....37-42.
24 HR TREND......3 DEGREES WARMER.
MAX HUMIDITY........60-66 PERCENT.
24 HR TREND......25 PERCENT DRIER.
HUMIDITY RECOVERY...GOOD.
20-FOOT WINDS.......DOWNSLOPE/DOWNVALLEY 4-7 MPH. GUSTS UP TO 15
MPH.
RIDGE TOP WINDS.....WEST AROUND 10 MPH UNTIL 2400, THEN NORTH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST AROUND 10 MPH UNTIL 2400, THEN NORTH.
MIXING HEIGHT.......2400-4400 FT AGL UNTIL 2400, THEN 600 FT AGL.
SMOKE DISPERSAL.....POOR.
FRIDAY
SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....66-71.
24 HR TREND......3 DEGREES WARMER.
MIN HUMIDITY........19-25 PERCENT.
24 HR TREND......6 PERCENT DRIER.
20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH. GUSTS UP TO 15 MPH.
RIDGE TOP WINDS.....NORTH AROUND 10 MPH UNTIL 1200, THEN SOUTHWEST.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....NORTH AROUND 10 MPH UNTIL 1200, THEN WEST.
MIXING HEIGHT.......600-2600 FT AGL UNTIL 1200, THEN 5000-7000 FT
AGL.
SMOKE DISPERSAL.....POOR TO FAIR.
FRIDAY NIGHT
SKY/WEATHER.........MOSTLY CLOUDY.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....41-46.
24 HR TREND......5 DEGREES WARMER.
MAX HUMIDITY........52-58 PERCENT.
24 HR TREND......7 PERCENT DRIER.
HUMIDITY RECOVERY...MODERATE.
20-FOOT WINDS.......DOWNSLOPE/DOWNVALLEY 4-7 MPH.
RIDGE TOP WINDS.....NORTHWEST AROUND 10 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST AROUND 10 MPH.
MIXING HEIGHT.......3000-5000 FT AGL UNTIL 2400, THEN 400-600 FT
AGL.
SMOKE DISPERSAL.....POOR.
SATURDAY
SKY/WEATHER.........PARTLY CLOUDY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....64-69.
24 HR TREND......1 DEGREE COOLER.
MIN HUMIDITY........27-33 PERCENT.
24 HR TREND......7 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.......2000-4000 FT AGL UNTIL 1200, THEN 7400-9400 FT
AGL.
SMOKE DISPERSAL.....POOR UNTIL 1200, THEN GOOD TO VERY GOOD.
FORECAST DAYS 3 THROUGH 7...
SATURDAY THROUGH SUNDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS. LOWS 38 TO 43. HIGHS IN THE MID 60S.
WEST WINDS AROUND 10 MPH.
MONDAY THROUGH TUESDAY
CLEAR. LOWS 32 TO 37. HIGHS 64 TO 69.
WEST WINDS AROUND 10 MPH.
WEDNESDAY
MOSTLY CLEAR. LOWS AROUND 40. HIGHS IN THE LOWER
70S.
THURSDAY
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE AFTERNOON. HIGHS AROUND 70.
WYZ277-192245-
LINCOLN AND UINTA COUNTIES/LOWER ELEVATIONS-
INCLUDING THE CITIES OF EVANSTON, FORT BRIDGER, AND KEMMERER
231 PM MDT THU SEP 18 2025
THIS AFTERNOON
SKY/WEATHER.........SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....65-70.
24 HR TREND......5 DEGREES WARMER.
MIN HUMIDITY........23-29 PERCENT.
24 HR TREND......6 PERCENT DRIER.
20-FOOT WINDS.......WEST WINDS AROUND 10 MPH AND GUSTY.
RIDGE TOP WINDS.....WEST AROUND 10 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST AROUND 10 MPH.
MIXING HEIGHT.......6000-6600 FT AGL.
SMOKE DISPERSAL.....FAIR TO GOOD.
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....39-44.
24 HR TREND......3 DEGREES WARMER.
MAX HUMIDITY........55-61 PERCENT.
24 HR TREND......24 PERCENT DRIER.
HUMIDITY RECOVERY...MODERATE.
20-FOOT WINDS.......DOWNSLOPE/DOWNVALLEY 4-7 MPH. GUSTS UP TO 15
MPH.
RIDGE TOP WINDS.....NORTHWEST AROUND 10 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....NORTHWEST AROUND 10 MPH.
MIXING HEIGHT.......2400-4400 FT AGL UNTIL 2400, THEN 400-800 FT
AGL.
SMOKE DISPERSAL.....POOR.
FRIDAY
SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....66-71.
24 HR TREND......2 DEGREES WARMER.
MIN HUMIDITY........18-24 PERCENT.
24 HR TREND......4 PERCENT DRIER.
20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH UNTIL 1500, THEN WEST
AROUND 10 MPH. GUSTS UP TO 15 MPH.
RIDGE TOP WINDS.....NORTHEAST AROUND 10 MPH UNTIL 1200, THEN WEST.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....SOUTHEAST AROUND 10 MPH UNTIL 1200, THEN WEST.
MIXING HEIGHT.......400-2200 FT AGL UNTIL 1200, THEN 5400-7400 FT
AGL.
SMOKE DISPERSAL.....POOR UNTIL 1200, THEN GOOD.
FRIDAY NIGHT
SKY/WEATHER.........MOSTLY CLOUDY.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....43-48.
24 HR TREND......4 DEGREES WARMER.
MAX HUMIDITY........57-63 PERCENT.
24 HR TREND......2 PERCENT WETTER.
HUMIDITY RECOVERY...GOOD.
20-FOOT WINDS.......DOWNSLOPE/DOWNVALLEY 4-7 MPH.
RIDGE TOP WINDS.....WEST AROUND 10 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST AROUND 10 MPH.
MIXING HEIGHT.......3200-5200 FT AGL UNTIL 2400, THEN 400-800 FT
AGL.
SMOKE DISPERSAL.....POOR TO FAIR UNTIL 2400, THEN POOR.
SATURDAY
SKY/WEATHER.........PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS THROUGH
THE DAY. SLIGHT CHANCE OF THUNDERSTORMS LATE IN
THE AFTERNOON. CHANCE OF PRECIPITATION 20
PERCENT.
CHANCE OF THUNDER...10 PERCENT.
MAX TEMPERATURE.....65-70.
24 HR TREND......1 DEGREE COOLER.
MIN HUMIDITY........34-40 PERCENT.
24 HR TREND......12 PERCENT WETTER.
20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH UNTIL 1200, THEN WEST
AROUND 10 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.......1800-3800 FT AGL UNTIL 1200, THEN 5800-7800 FT
AGL.
SMOKE DISPERSAL.....POOR UNTIL 1200, THEN GOOD TO VERY GOOD.
FORECAST DAYS 3 THROUGH 7...
SATURDAY NIGHT
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS IN THE MID 40S. WEST WINDS AROUND 10 MPH.
SUNDAY
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND THUNDERSTORMS.
LOWS AROUND 40. HIGHS IN THE UPPER 60S. WEST WINDS AROUND 10 MPH.
MONDAY THROUGH TUESDAY
CLEAR. LOWS 34 TO 39. HIGHS 64 TO 69.
EAST WINDS AROUND 10 MPH.
WEDNESDAY
MOSTLY CLEAR. LOWS IN THE LOWER 40S. HIGHS IN THE
LOWER 70S.
THURSDAY
PARTLY CLOUDY. HIGHS IN THE LOWER 70S.
WYZ279-192245-
SWEETWATER COUNTY/ROCK SPRINGS BLM/FLAMING GORGE NRA-
INCLUDING THE CITIES OF GREEN RIVER, ROCK SPRINGS, AND WAMSUTTER
231 PM MDT THU SEP 18 2025
THIS AFTERNOON
SKY/WEATHER.........SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....65-70.
24 HR TREND......8 DEGREES WARMER.
MIN HUMIDITY........22-28 PERCENT.
24 HR TREND......12 PERCENT DRIER.
20-FOOT WINDS.......WEST WINDS AROUND 10 MPH AND GUSTY.
RIDGE TOP WINDS.....WEST AROUND 15 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST AROUND 15 MPH.
MIXING HEIGHT.......6000-6600 FT AGL.
SMOKE DISPERSAL.....FAIR TO GOOD.
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....40-45.
24 HR TREND......2 DEGREES WARMER.
MAX HUMIDITY........54-60 PERCENT.
24 HR TREND......29 PERCENT DRIER.
HUMIDITY RECOVERY...MODERATE.
20-FOOT WINDS.......DOWNSLOPE/DOWNVALLEY 4-7 MPH.
RIDGE TOP WINDS.....SOUTHWEST AROUND 10 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....SOUTHWEST AROUND 10 MPH.
MIXING HEIGHT.......2200-4200 FT AGL UNTIL 2400, THEN 400-600 FT
AGL.
SMOKE DISPERSAL.....POOR.
FRIDAY
SKY/WEATHER.........PARTLY CLOUDY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....68-73.
24 HR TREND......4 DEGREES WARMER.
MIN HUMIDITY........22-28 PERCENT.
24 HR TREND......3 PERCENT DRIER.
20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH UNTIL 1200, THEN
SOUTHWEST AROUND 10 MPH. GUSTS UP TO 15 MPH.
RIDGE TOP WINDS.....SOUTH AROUND 10 MPH UNTIL 1200, THEN SOUTHWEST.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....SOUTHWEST 10 TO 15 MPH.
MIXING HEIGHT.......400-2200 FT AGL UNTIL 1200, THEN 5000-7000 FT
AGL.
SMOKE DISPERSAL.....POOR UNTIL 1200, THEN FAIR TO GOOD.
FRIDAY NIGHT
SKY/WEATHER.........MOSTLY CLOUDY.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....47-52.
24 HR TREND......7 DEGREES WARMER.
MAX HUMIDITY........55-61 PERCENT.
24 HR TREND......1 PERCENT DRIER.
HUMIDITY RECOVERY...MODERATE.
20-FOOT WINDS.......WEST WINDS AROUND 10 MPH UNTIL 2100, THEN
DOWNSLOPE/DOWNVALLEY 4-7 MPH. GUSTS UP TO 15
MPH.
RIDGE TOP WINDS.....SOUTHWEST AROUND 10 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST AROUND 10 MPH.
MIXING HEIGHT.......2800-4800 FT AGL UNTIL 2400, THEN 400-600 FT
AGL.
SMOKE DISPERSAL.....POOR.
SATURDAY
SKY/WEATHER.........PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS LATE IN THE AFTERNOON. CHANCE OF
PRECIPITATION 20 PERCENT.
CHANCE OF THUNDER...10 PERCENT.
MAX TEMPERATURE.....65-70.
24 HR TREND......2 DEGREES COOLER.
MIN HUMIDITY........39-45 PERCENT.
24 HR TREND......11 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.......1800-3800 FT AGL UNTIL 1200, THEN 7200-9200 FT
AGL.
SMOKE DISPERSAL.....POOR TO FAIR UNTIL 1200, THEN VERY GOOD.
FORECAST DAYS 3 THROUGH 7...
SATURDAY THROUGH SUNDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS. LOWS 43 TO 48. HIGHS IN THE UPPER 60S.
WEST WINDS AROUND 10 MPH.
MONDAY
MOSTLY CLEAR. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS IN THE MID 30S. HIGHS IN THE MID 60S.
NORTHWEST WINDS AROUND 10 MPH.
TUESDAY
MOSTLY CLEAR. LOWS IN THE UPPER 30S. HIGHS IN THE
UPPER 60S. WINDS GENERALLY LESS THAN 10 MPH.
WEDNESDAY THROUGH THURSDAY
MOSTLY CLEAR. LOWS IN THE LOWER
40S. HIGHS 70 TO 75.
WYZ289-192245-
GRANITE/GREEN/FERRIS/RATTLESNAKE MOUNTAINS-
INCLUDING THE CITY OF JEFFREY CITY
231 PM MDT THU SEP 18 2025
THIS AFTERNOON
SKY/WEATHER.........SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....65-70.
24 HR TREND......10 DEGREES WARMER.
MIN HUMIDITY........26-32 PERCENT.
24 HR TREND......18 PERCENT DRIER.
20-FOOT WINDS.......WEST WINDS AROUND 10 MPH AND GUSTY.
RIDGE TOP WINDS.....WEST AROUND 15 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST AROUND 15 MPH.
MIXING HEIGHT.......6200-7200 FT AGL.
SMOKE DISPERSAL.....GOOD.
TONIGHT
SKY/WEATHER.........MOSTLY CLEAR.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....42-47.
24 HR TREND......3 DEGREES WARMER.
MAX HUMIDITY........59-65 PERCENT.
24 HR TREND......30 PERCENT DRIER.
HUMIDITY RECOVERY...GOOD.
20-FOOT WINDS.......SOUTHWEST WINDS AROUND 10 MPH UNTIL 2100, THEN
DOWNSLOPE/DOWNVALLEY 4-7 MPH. GUSTS UP TO 15
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 2400, THEN 400-600 FT
AGL.
SMOKE DISPERSAL.....POOR.
FRIDAY
SKY/WEATHER.........PARTLY CLOUDY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....69-74.
24 HR TREND......4 DEGREES WARMER.
MIN HUMIDITY........20-26 PERCENT.
24 HR TREND......5 PERCENT DRIER.
20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH UNTIL 1500, THEN WEST
AROUND 10 MPH. GUSTS UP TO 15 MPH.
RIDGE TOP WINDS.....SOUTHWEST 10 TO 15 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST 10 TO 15 MPH.
MIXING HEIGHT.......400-2400 FT AGL UNTIL 1200, THEN 4600-6600 FT
AGL.
SMOKE DISPERSAL.....POOR TO FAIR.
FRIDAY NIGHT
SKY/WEATHER.........MOSTLY CLOUDY.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....47-52.
24 HR TREND......6 DEGREES WARMER.
MAX HUMIDITY........52-58 PERCENT.
24 HR TREND......7 PERCENT DRIER.
HUMIDITY RECOVERY...MODERATE.
20-FOOT WINDS.......DOWNSLOPE/DOWNVALLEY 4-7 MPH. GUSTS UP TO 15
MPH.
RIDGE TOP WINDS.....SOUTHWEST AROUND 10 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....NORTHWEST AROUND 10 MPH UNTIL 2400, THEN WEST.
MIXING HEIGHT.......2200-4200 FT AGL UNTIL 2400, THEN 200-600 FT
AGL.
SMOKE DISPERSAL.....POOR.
SATURDAY
SKY/WEATHER.........PARTLY CLOUDY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....68-73.
24 HR TREND......1 DEGREE COOLER.
MIN HUMIDITY........23-29 PERCENT.
24 HR TREND......3 PERCENT WETTER.
20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH UNTIL 0900, 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 10 TO 15 MPH.
MIXING HEIGHT.......1600-3600 FT AGL UNTIL 1200, THEN 7200-9200 FT
AGL.
SMOKE DISPERSAL.....POOR TO FAIR UNTIL 1200, THEN VERY GOOD.
FORECAST DAYS 3 THROUGH 7...
SATURDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 40S. SOUTHWEST
WINDS AROUND 10 MPH.
SUNDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS IN THE MID 40S. HIGHS IN THE LOWER 70S. WEST
WINDS AROUND 10 MPH.
MONDAY
MOSTLY CLEAR. CHANCE OF SHOWERS AND SLIGHT CHANCE OF
THUNDERSTORMS. LOWS IN THE UPPER 30S. HIGHS IN THE LOWER 60S.
NORTHWEST WINDS AROUND 10 MPH.
TUESDAY
CLEAR. LOWS IN THE LOWER 40S. HIGHS IN THE UPPER 60S.
WINDS GENERALLY LESS THAN 10 MPH.
WEDNESDAY THROUGH THURSDAY
MOSTLY CLEAR. LOWS IN THE MID 40S.
HIGHS IN THE LOWER 70S.
WYZ300-192245-
CASPER MOUNTAIN-
231 PM MDT THU SEP 18 2025
THIS AFTERNOON
SKY/WEATHER.........SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....61-66.
24 HR TREND......11 DEGREES WARMER.
MIN HUMIDITY........37-43 PERCENT.
24 HR TREND......30 PERCENT DRIER.
20-FOOT WINDS.......WEST WINDS AROUND 10 MPH AND GUSTY.
RIDGE TOP WINDS.....WEST AROUND 15 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST AROUND 15 MPH.
MIXING HEIGHT.......4400-5600 FT AGL.
SMOKE DISPERSAL.....FAIR TO GOOD.
TONIGHT
SKY/WEATHER.........CLEAR.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....41-46.
24 HR TREND......4 DEGREES WARMER.
MAX HUMIDITY........62-68 PERCENT.
24 HR TREND......34 PERCENT DRIER.
HUMIDITY RECOVERY...GOOD.
20-FOOT WINDS.......DOWNSLOPE/DOWNVALLEY 4-7 MPH.
RIDGE TOP WINDS.....SOUTHWEST AROUND 10 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....SOUTHWEST AROUND 10 MPH.
MIXING HEIGHT.......1200-3200 FT AGL UNTIL 2400, THEN 200-400 FT
AGL.
SMOKE DISPERSAL.....POOR.
FRIDAY
SKY/WEATHER.........SUNNY THEN BECOMING PARTLY CLOUDY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....66-71.
24 HR TREND......5 DEGREES WARMER.
MIN HUMIDITY........31-37 PERCENT.
24 HR TREND......12 PERCENT DRIER.
20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH. GUSTS UP TO 15 MPH.
RIDGE TOP WINDS.....SOUTHWEST AROUND 10 MPH UNTIL 1200, THEN WEST.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....NORTHWEST AROUND 10 MPH.
MIXING HEIGHT.......600-2600 FT AGL UNTIL 1200, THEN 3600-5600 FT
AGL.
SMOKE DISPERSAL.....POOR TO FAIR.
FRIDAY NIGHT
SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....47-52.
24 HR TREND......5 DEGREES WARMER.
MAX HUMIDITY........58-64 PERCENT.
24 HR TREND......3 PERCENT DRIER.
HUMIDITY RECOVERY...GOOD.
20-FOOT WINDS.......DOWNSLOPE/DOWNVALLEY 4-7 MPH UNTIL 2400, THEN
SOUTH AROUND 10 MPH UNTIL 0300, THEN
DOWNSLOPE/DOWNVALLEY 4-7 MPH. GUSTS UP TO 15
MPH.
RIDGE TOP WINDS.....EAST AROUND 10 MPH UNTIL 2400, THEN SOUTH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....EAST AROUND 10 MPH UNTIL 2400, THEN SOUTH.
MIXING HEIGHT.......600-2600 FT AGL UNTIL 2400, THEN 200-400 FT
AGL.
SMOKE DISPERSAL.....POOR.
SATURDAY
SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....67-72.
24 HR TREND......2 DEGREES WARMER.
MIN HUMIDITY........32-38 PERCENT.
24 HR TREND......1 PERCENT WETTER.
20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH UNTIL 0900, THEN WEST
AROUND 10 MPH. GUSTS UP TO 20 MPH.
RIDGE TOP WINDS.....SOUTHWEST AROUND 15 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST AROUND 15 MPH.
MIXING HEIGHT.......1200-3200 FT AGL UNTIL 1200, THEN 5600-7600 FT
AGL.
SMOKE DISPERSAL.....POOR UNTIL 1200, THEN GOOD.
FORECAST DAYS 3 THROUGH 7...
SATURDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 40S. 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.
SOUTHWEST WINDS AROUND 10 MPH.
MONDAY
COOLER. MOSTLY CLEAR WITH CHANCE OF SHOWERS AND SLIGHT
CHANCE OF THUNDERSTORMS. LOWS IN THE UPPER 30S. HIGHS IN THE MID
50S. NORTHWEST WINDS AROUND 10 MPH.
TUESDAY
MOSTLY CLEAR. LOWS IN THE LOWER 40S. HIGHS IN THE
LOWER 60S. WINDS GENERALLY LESS THAN 10 MPH.
WEDNESDAY THROUGH THURSDAY
MOSTLY CLEAR. LOWS IN THE MID 40S.
HIGHS IN THE UPPER 60S.
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