463
FNUS55 KRIW 191202
FWFRIW
FIRE WEATHER PLANNING FORECAST FOR WESTERN AND CENTRAL WYOMING
NATIONAL WEATHER SERVICE RIVERTON WY
501 AM MST FRI DEC 19 2025
DISCUSSION
***THIS PRODUCT IS CURRENTLY AUTOMATED WITH NO DISCUSSION
AND WILL NOT BE REFRESHED WITH ALL FORECAST UPDATES. IT SHOULD
BE USED FOR PLANNING PURPOSES ONLY. IF YOU NEED ADDITIONAL FIRE
WEATHER INFORMATION, PLEASE CONTACT THE NWS OFFICE IN RIVERTON,
WYOMING. THE HUMAN WRITTEN DISCUSSION SECTION ALONG WITH THE FIRE
WEATHER FORECAST WILL RESUME REGULAR OPERATIONS SOMETIME IN
SPRING 2026.***
---THUNDERSTORMS IMPLY STRONG GUSTY AND ERRATIC WINDS---
WYZ280-192300-
NATRONA COUNTY/CASPER BLM-
INCLUDING THE CITIES OF CASPER AND MIDWEST
501 AM MST FRI DEC 19 2025
..HIGH WIND WARNING IN EFFECT UNTIL 11 PM MST THIS EVENING
TODAY
SKY/WEATHER.........PARTLY CLOUDY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....47-52.
24 HR TREND......12 DEGREES WARMER.
MIN HUMIDITY........36-42 PERCENT.
24 HR TREND......12 PERCENT WETTER.
20-FOOT WINDS.......VERY WINDY. SOUTHWEST WINDS 30 TO 35 MPH WITH
GUSTS TO AROUND 55 MPH UNTIL 1200, THEN AROUND
40 MPH WITH GUSTS TO AROUND 60 MPH.
RIDGE TOP WINDS.....SOUTHWEST AROUND 35 MPH UNTIL 1000, THEN AROUND
45 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....SOUTHWEST 35 TO 40 MPH UNTIL 1000, THEN WEST 45
TO 50 MPH UNTIL 1200, THEN 55 TO 60 MPH UNTIL
1600, THEN AROUND 45 MPH.
MIXING HEIGHT.......600-2400 FT AGL UNTIL 1100, THEN 1600-3600 FT
AGL UNTIL 1700, THEN 1000-1200 FT AGL.
SMOKE DISPERSAL.....POOR TO FAIR UNTIL 1000, THEN GOOD TO VERY GOOD
UNTIL 1200, THEN VERY GOOD TO EXCELLENT UNTIL
1600, THEN FAIR TO GOOD.
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY THEN
BECOMING PARTLY CLOUDY. SNOW SHOWERS AND RAIN
SHOWERS LIKELY IN THE EVENING. CHANCE OF SNOW
SHOWERS AFTER MIDNIGHT. SNOW ACCUMULATION UP TO
1 INCH. CHANCE OF PRECIPITATION 70 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....23-28.
24 HR TREND......10 DEGREES COOLER.
MAX HUMIDITY........77-83 PERCENT.
24 HR TREND......23 PERCENT WETTER.
HUMIDITY RECOVERY...EXCELLENT.
20-FOOT WINDS.......WINDY. WEST WINDS 30 TO 35 MPH WITH GUSTS TO
AROUND 55 MPH UNTIL 2400, THEN NORTH AROUND 15
MPH AND GUSTY UNTIL 0300, THEN
DOWNSLOPE/DOWNVALLEY 4-7 MPH.
RIDGE TOP WINDS.....SOUTHWEST 40 TO 45 MPH UNTIL 2100, THEN WEST
AROUND 35 MPH UNTIL 2300, THEN NORTHWEST UNTIL
2400, THEN NORTH 15 TO 20 MPH UNTIL 0400, THEN
AROUND 10 MPH UNTIL 0500, THEN SOUTHWEST.
CHC OF WETTING RAIN.5 PERCENT UNTIL 2400, THEN 15 PERCENT.
TRANSPORT WINDS.....WEST 40 TO 45 MPH UNTIL 2200, THEN NORTHWEST 30
TO 35 MPH UNTIL 2400, THEN NORTH 20 TO 25 MPH
UNTIL 0200, THEN 10 TO 15 MPH UNTIL 0500, THEN
NORTHWEST.
MIXING HEIGHT.......800-1600 FT AGL.
SMOKE DISPERSAL.....POOR.
SATURDAY
SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....36-41.
24 HR TREND......12 DEGREES COOLER.
MIN HUMIDITY........38-44 PERCENT.
24 HR TREND......3 PERCENT DRIER.
20-FOOT WINDS.......WEST WINDS 10 TO 15 MPH. GUSTS UP TO 20 MPH
UNTIL 1200, THEN 25 MPH.
RIDGE TOP WINDS.....WEST 15 TO 20 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST 15 TO 20 MPH UNTIL 1300. AROUND 15 MPH
AFTER 1600.
MIXING HEIGHT.......800-2600 FT AGL UNTIL 1100, THEN 2600-4200 FT
AGL UNTIL 1600, THEN 400-1800 FT AGL.
SMOKE DISPERSAL.....POOR TO FAIR UNTIL 1700, THEN POOR.
FORECAST DAYS 3 THROUGH 7...
SATURDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 20S. SOUTHWEST
WINDS AROUND 10 MPH.
SUNDAY THROUGH TUESDAY
PARTLY CLOUDY. LOWS 38 TO 43. HIGHS
51 TO 56. SOUTHWEST WINDS AROUND 20 MPH.
WEDNESDAY THROUGH CHRISTMAS DAY
PARTLY CLOUDY WITH SLIGHT
CHANCE OF SHOWERS AND SNOW SHOWERS. LOWS IN THE UPPER 30S. HIGHS
53 TO 58.
WYZ283-192300-
UPPER WIND RIVER BASIN/WIND RIVER BASIN-
INCLUDING THE CITIES OF CROWHEART, LANDER, RIVERTON, AND SHOSHONI
501 AM MST FRI DEC 19 2025
..HIGH WIND WARNING IN EFFECT UNTIL 5 PM MST THIS AFTERNOON
TODAY
SKY/WEATHER.........PARTLY CLOUDY. CHANCE OF SNOW SHOWERS IN THE
MORNING. CHANCE OF RAIN SHOWERS THROUGH THE
DAY. SLIGHT CHANCE OF SNOW SHOWERS IN THE
AFTERNOON. CHANCE OF PRECIPITATION 50 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....43-48.
24 HR TREND......10 DEGREES WARMER.
MIN HUMIDITY........46-52 PERCENT.
24 HR TREND......16 PERCENT WETTER.
20-FOOT WINDS.......WINDY. WEST WINDS 20 TO 25 MPH WITH GUSTS TO
AROUND 35 MPH UNTIL 1200, THEN SOUTHWEST AROUND
30 MPH WITH GUSTS TO AROUND 50 MPH.
RIDGE TOP WINDS.....WEST 25 TO 30 MPH UNTIL 1200, THEN SOUTHWEST 35
TO 40 MPH UNTIL 1700, THEN AROUND 30 MPH.
CHC OF WETTING RAIN.LESS THAN 5 PERCENT.
TRANSPORT WINDS.....WEST AROUND 30 MPH UNTIL 1100, THEN 40 TO 45
MPH UNTIL 1700, THEN SOUTHWEST AROUND 35 MPH.
MIXING HEIGHT.......1000-3000 FT AGL.
SMOKE DISPERSAL.....POOR TO FAIR UNTIL 1100, THEN GOOD TO VERY GOOD
UNTIL 1600, THEN POOR TO FAIR.
TONIGHT
SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
CHANCE OF SNOW SHOWERS IN THE EVENING. CHANCE
OF RAIN SHOWERS THROUGH THE NIGHT. SLIGHT
CHANCE OF SNOW SHOWERS AFTER MIDNIGHT. CHANCE
OF PRECIPITATION 50 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....21-26.
24 HR TREND......7 DEGREES COOLER.
MAX HUMIDITY........72-78 PERCENT.
24 HR TREND......7 PERCENT WETTER.
HUMIDITY RECOVERY...EXCELLENT.
20-FOOT WINDS.......BREEZY. WEST WINDS 20 TO 25 MPH WITH GUSTS TO
AROUND 40 MPH UNTIL 2400, THEN NORTHWEST 10 TO
15 MPH AND GUSTY.
RIDGE TOP WINDS.....SOUTHWEST 30 TO 35 MPH UNTIL 2200, THEN
NORTHWEST 20 TO 25 MPH UNTIL 0300, THEN AROUND
15 MPH.
CHC OF WETTING RAIN.LESS THAN 5 PERCENT.
TRANSPORT WINDS.....WEST 30 TO 35 MPH UNTIL 2300, THEN NORTHWEST 20
TO 25 MPH UNTIL 0300, THEN AROUND 15 MPH.
MIXING HEIGHT.......600-1200 FT AGL.
SMOKE DISPERSAL.....POOR.
SATURDAY
SKY/WEATHER.........MOSTLY SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....33-38.
24 HR TREND......8 DEGREES COOLER.
MIN HUMIDITY........30-36 PERCENT.
24 HR TREND......12 PERCENT DRIER.
20-FOOT WINDS.......WEST WINDS 10 TO 15 MPH WITH HIGHER GUSTS.
RIDGE TOP WINDS.....WEST 15 TO 20 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST 15 TO 20 MPH UNTIL 1300. AROUND 15 MPH
AFTER 1600.
MIXING HEIGHT.......1000-3000 FT AGL UNTIL 1300, THEN 1600-3600 FT
AGL UNTIL 1700, THEN 400-800 FT AGL.
SMOKE DISPERSAL.....POOR TO FAIR.
FORECAST DAYS 3 THROUGH 7...
SATURDAY NIGHT
PARTLY CLOUDY. SLIGHT CHANCE OF SNOW SHOWERS
AFTER MIDNIGHT. LOWS IN THE LOWER 20S. SOUTHWEST WINDS AROUND
10 MPH.
SUNDAY
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND SLIGHT CHANCE
OF SNOW SHOWERS. LOWS IN THE MID 30S. HIGHS IN THE MID 40S.
SOUTHWEST WINDS AROUND 15 MPH.
MONDAY
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND SLIGHT CHANCE
OF SNOW SHOWERS. LOWS IN THE MID 30S. HIGHS IN THE LOWER 50S.
SOUTHWEST WINDS AROUND 15 MPH.
TUESDAY
PARTLY CLOUDY. LOWS IN THE UPPER 30S. HIGHS IN THE MID
50S. SOUTHWEST WINDS AROUND 15 MPH.
WEDNESDAY
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND SNOW
SHOWERS. LOWS IN THE LOWER 30S. HIGHS IN THE MID 50S.
CHRISTMAS DAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
SNOW SHOWERS. HIGHS AROUND 50.
WYZ285-192300-
SOUTH BIGHORN MOUNTAINS-
501 AM MST FRI DEC 19 2025
..HIGH WIND WARNING IN EFFECT UNTIL 5 PM MST THIS AFTERNOON
TODAY
SKY/WEATHER.........PARTLY CLOUDY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....39-44.
24 HR TREND......10 DEGREES WARMER.
MIN HUMIDITY........44-50 PERCENT.
24 HR TREND......14 PERCENT WETTER.
20-FOOT WINDS.......WINDY. SOUTHWEST WINDS 30 TO 35 MPH. GUSTS UP
TO 50 MPH UNTIL 1200, THEN 55 MPH.
RIDGE TOP WINDS.....SOUTHWEST 35 TO 40 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST 35 TO 40 MPH UNTIL 1200, THEN 45 TO 50 MPH
UNTIL 1600, THEN AROUND 40 MPH.
MIXING HEIGHT.......600-2600 FT AGL.
SMOKE DISPERSAL.....GOOD UNTIL 1600, THEN POOR.
TONIGHT
SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY. SNOW
SHOWERS LIKELY AND SLIGHT CHANCE OF RAIN
SHOWERS IN THE EVENING. CHANCE OF SNOW SHOWERS
AFTER MIDNIGHT. PATCHY BLOWING SNOW LATE IN THE
EVENING. SNOW ACCUMULATION UP TO 3 INCHES.
CHANCE OF PRECIPITATION 70 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....17-22.
24 HR TREND......7 DEGREES COOLER.
MAX HUMIDITY........80-86 PERCENT.
24 HR TREND......29 PERCENT WETTER.
HUMIDITY RECOVERY...EXCELLENT.
20-FOOT WINDS.......WINDY. SOUTHWEST WINDS AROUND 30 MPH WITH GUSTS
TO AROUND 45 MPH UNTIL 2100. WEST AROUND 10 MPH
WITH GUSTS TO AROUND 15 MPH AFTER 0300.
RIDGE TOP WINDS.....SOUTHWEST 35 TO 40 MPH UNTIL 2000. NORTHWEST 15
TO 20 MPH AFTER 2200.
CHC OF WETTING RAIN.25 PERCENT UNTIL 2400, THEN 15 PERCENT.
TRANSPORT WINDS.....WEST 35 TO 40 MPH UNTIL 2100. NORTHWEST 15 TO
20 MPH AFTER 2300.
MIXING HEIGHT.......200-1000 FT AGL.
SMOKE DISPERSAL.....POOR.
SATURDAY
SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....28-33.
24 HR TREND......12 DEGREES COOLER.
MIN HUMIDITY........39-45 PERCENT.
24 HR TREND......3 PERCENT DRIER.
20-FOOT WINDS.......WEST WINDS 10 TO 15 MPH WITH HIGHER GUSTS.
RIDGE TOP WINDS.....WEST 15 TO 20 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST 15 TO 20 MPH.
MIXING HEIGHT.......400-2400 FT AGL UNTIL 1100, THEN 1000-3000 FT
AGL UNTIL 1700, THEN 200-400 FT AGL.
SMOKE DISPERSAL.....POOR.
FORECAST DAYS 3 THROUGH 7...
SATURDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 20S. SOUTHWEST
WINDS AROUND 10 MPH.
SUNDAY THROUGH TUESDAY
PARTLY CLOUDY. LOWS 35 TO 40. HIGHS
43 TO 48. SOUTHWEST WINDS AROUND 20 MPH.
WEDNESDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND SNOW
SHOWERS. LOWS IN THE MID 30S. HIGHS IN THE UPPER 40S.
CHRISTMAS DAY
PARTLY CLOUDY. SLIGHT CHANCE OF SNOW SHOWERS IN
THE MORNING. HIGHS IN THE MID 40S.
WYZ281-192300-
JOHNSON COUNTY/CASPER BLM-
INCLUDING THE CITIES OF BUFFALO AND KAYCEE
501 AM MST FRI DEC 19 2025
..HIGH WIND WARNING IN EFFECT UNTIL 5 PM MST THIS AFTERNOON
TODAY
SKY/WEATHER.........PARTLY CLOUDY. SLIGHT CHANCE OF RAIN SHOWERS
LATE IN THE AFTERNOON. SLIGHT CHANCE OF SNOW
SHOWERS LATE IN THE AFTERNOON. CHANCE OF
PRECIPITATION 20 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....46-51.
24 HR TREND......16 DEGREES WARMER.
MIN HUMIDITY........34-40 PERCENT.
24 HR TREND......6 PERCENT WETTER.
20-FOOT WINDS.......WINDY. SOUTHWEST WINDS 30 TO 35 MPH. GUSTS UP
TO 40 MPH UNTIL 0900, THEN 55 MPH UNTIL 1500,
THEN 40 MPH.
RIDGE TOP WINDS.....SOUTHWEST 30 TO 35 MPH UNTIL 0900, THEN WEST 40
TO 45 MPH UNTIL 1400, THEN SOUTHWEST 30 TO 35
MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....SOUTHWEST 30 TO 35 MPH UNTIL 0900, THEN WEST 40
TO 45 MPH UNTIL 1600, THEN 30 TO 35 MPH.
MIXING HEIGHT.......1400-3400 FT AGL UNTIL 1700, THEN 1200-1400 FT
AGL.
SMOKE DISPERSAL.....VERY GOOD UNTIL 1600, THEN POOR TO FAIR.
TONIGHT
SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY. SNOW
SHOWERS AND CHANCE OF RAIN SHOWERS IN THE
EVENING, THEN CHANCE OF SNOW SHOWERS AFTER
MIDNIGHT. PATCHY BLOWING SNOW EARLY IN THE
EVENING. SNOW ACCUMULATION OF 1 TO 2 INCHES.
CHANCE OF PRECIPITATION 90 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....18-23.
24 HR TREND......9 DEGREES COOLER.
MAX HUMIDITY........84-90 PERCENT.
24 HR TREND......33 PERCENT WETTER.
HUMIDITY RECOVERY...EXCELLENT.
20-FOOT WINDS.......BREEZY. NORTH WINDS 20 TO 25 MPH WITH GUSTS TO
AROUND 35 MPH UNTIL 2400, THEN AROUND 10 MPH
WITH GUSTS TO AROUND 15 MPH UNTIL 0300, THEN
DOWNSLOPE/DOWNVALLEY 4-7 MPH.
RIDGE TOP WINDS.....NORTHWEST AROUND 30 MPH UNTIL 2000, THEN NORTH
20 TO 25 MPH UNTIL 0100, THEN NORTHWEST AROUND
15 MPH UNTIL 0300, THEN WEST.
CHC OF WETTING RAIN.45 PERCENT UNTIL 2400, THEN 5 PERCENT.
TRANSPORT WINDS.....NORTHWEST AROUND 30 MPH UNTIL 2100, THEN NORTH
20 TO 25 MPH UNTIL 0100, THEN NORTHWEST AROUND
15 MPH UNTIL 0300, THEN WEST.
MIXING HEIGHT.......600-2000 FT AGL.
SMOKE DISPERSAL.....POOR.
SATURDAY
SKY/WEATHER.........MOSTLY SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....30-35.
24 HR TREND......19 DEGREES COOLER.
MIN HUMIDITY........46-52 PERCENT.
24 HR TREND......18 PERCENT WETTER.
20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH UNTIL 1200, THEN
SOUTHWEST AROUND 10 MPH UNTIL 1500, THEN
UPSLOPE/UPVALLEY 5-9 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 UNTIL 1400. SOUTHWEST AFTER
1700.
MIXING HEIGHT.......600-2600 FT AGL UNTIL 1100, THEN 2200-3600 FT
AGL UNTIL 1600, THEN 400-1600 FT AGL.
SMOKE DISPERSAL.....POOR.
FORECAST DAYS 3 THROUGH 7...
SATURDAY NIGHT
PARTLY CLOUDY. LOWS AROUND 17. SOUTHWEST WINDS
AROUND 10 MPH.
SUNDAY
NOT AS COOL. PARTLY CLOUDY. LOWS IN THE LOWER 30S.
HIGHS IN THE MID 40S. SOUTHWEST WINDS AROUND 10 MPH.
MONDAY
PARTLY CLOUDY. LOWS IN THE LOWER 30S. HIGHS IN THE
LOWER 50S. SOUTHWEST WINDS AROUND 15 MPH.
TUESDAY
PARTLY CLOUDY. LOWS IN THE UPPER 30S. HIGHS IN THE MID
50S. SOUTHWEST WINDS AROUND 15 MPH.
WEDNESDAY THROUGH CHRISTMAS DAY
PARTLY CLOUDY. LOWS IN THE MID
30S. HIGHS 54 TO 59.
WYZ282-192300-
SOUTH BIGHORN BASIN/WORLAND BLM-
INCLUDING THE CITIES OF TEN SLEEP, THERMOPOLIS, AND WORLAND
501 AM MST FRI DEC 19 2025
..HIGH WIND WARNING IN EFFECT UNTIL 5 PM MST THIS AFTERNOON
TODAY
SKY/WEATHER.........PARTLY CLOUDY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....42-47.
24 HR TREND......13 DEGREES WARMER.
MIN HUMIDITY........42-48 PERCENT.
24 HR TREND......11 PERCENT WETTER.
20-FOOT WINDS.......WINDY. SOUTHWEST WINDS 20 TO 25 MPH WITH GUSTS
TO AROUND 35 MPH UNTIL 1200, THEN AROUND 30 MPH
WITH GUSTS TO AROUND 45 MPH.
RIDGE TOP WINDS.....SOUTHWEST 20 TO 25 MPH UNTIL 1000, THEN 30 TO
35 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....SOUTHWEST 25 TO 30 MPH UNTIL 1000, THEN 35 TO
40 MPH UNTIL 1400, THEN 40 TO 45 MPH UNTIL
1600, THEN 30 TO 35 MPH.
MIXING HEIGHT.......800-2800 FT AGL.
SMOKE DISPERSAL.....POOR TO FAIR.
TONIGHT
SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
CHANCE OF RAIN SHOWERS IN THE EVENING. CHANCE
OF SNOW SHOWERS THROUGH THE NIGHT. CHANCE OF
PRECIPITATION 50 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....16-21.
24 HR TREND......4 DEGREES COOLER.
MAX HUMIDITY........79-85 PERCENT.
24 HR TREND......21 PERCENT WETTER.
HUMIDITY RECOVERY...EXCELLENT.
20-FOOT WINDS.......NORTHWEST WINDS 15 TO 20 MPH WITH GUSTS TO
AROUND 30 MPH UNTIL 2400. DOWNSLOPE/DOWNVALLEY
4-7 MPH AFTER 0300.
RIDGE TOP WINDS.....WEST 25 TO 30 MPH UNTIL 2000, THEN NORTHWEST 20
TO 25 MPH UNTIL 2400, THEN WEST 10 TO 15 MPH
UNTIL 0400, THEN SOUTHWEST.
CHC OF WETTING RAIN.10 PERCENT UNTIL 2400, THEN ZERO PERCENT.
TRANSPORT WINDS.....WEST 25 TO 30 MPH UNTIL 2100. AROUND 10 MPH
AFTER 0500.
MIXING HEIGHT.......600-1800 FT AGL.
SMOKE DISPERSAL.....POOR.
SATURDAY
SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....29-34.
24 HR TREND......14 DEGREES COOLER.
MIN HUMIDITY........38-44 PERCENT.
24 HR TREND......1 PERCENT WETTER.
20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH UNTIL 1200, THEN EAST
AROUND 10 MPH UNTIL 1500, THEN UPSLOPE/UPVALLEY
5-9 MPH.
RIDGE TOP WINDS.....SOUTH AROUND 10 MPH UNTIL 1300, THEN EAST.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST 10 TO 15 MPH UNTIL 1600, THEN EAST.
MIXING HEIGHT.......600-2200 FT AGL UNTIL 1100, THEN 2200-3400 FT
AGL UNTIL 1600, THEN 400-1400 FT AGL.
SMOKE DISPERSAL.....POOR.
FORECAST DAYS 3 THROUGH 7...
SATURDAY NIGHT
PARTLY CLOUDY. LOWS AROUND 20. WINDS GENERALLY
LESS THAN 10 MPH.
SUNDAY
NOT AS COOL. PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS.
LOWS IN THE LOWER 30S. HIGHS IN THE MID 40S. SOUTH WINDS AROUND
10 MPH.
MONDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS. LOWS IN
THE LOWER 30S. HIGHS IN THE LOWER 50S. SOUTH WINDS AROUND 10 MPH.
TUESDAY
PARTLY CLOUDY. LOWS IN THE MID 30S. HIGHS IN THE MID
50S. SOUTH WINDS AROUND 10 MPH.
WEDNESDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND SNOW
SHOWERS. LOWS IN THE LOWER 30S. HIGHS IN THE UPPER 50S.
CHRISTMAS DAY
PARTLY CLOUDY. HIGHS IN THE LOWER 50S.
WYZ275-192300-
NORTH BIGHORN BASIN/WORLAND BLM-
INCLUDING THE CITIES OF GREYBULL, LOVELL, AND POWELL
501 AM MST FRI DEC 19 2025
TODAY
SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
SLIGHT CHANCE OF RAIN SHOWERS LATE IN THE
AFTERNOON. CHANCE OF RAIN SHOWERS AND SNOW
SHOWERS LATE IN THE AFTERNOON, THEN SLIGHT
CHANCE OF RAIN SHOWERS AND SNOW SHOWERS LATE IN
THE AFTERNOON. CHANCE OF PRECIPITATION 50
PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....39-44.
24 HR TREND......13 DEGREES WARMER.
MIN HUMIDITY........46-52 PERCENT.
24 HR TREND......14 PERCENT WETTER.
20-FOOT WINDS.......BREEZY. SOUTH WINDS 15 TO 20 MPH WITH GUSTS TO
AROUND 30 MPH UNTIL 1200, THEN SOUTHWEST 20 TO
25 MPH WITH GUSTS TO AROUND 40 MPH.
RIDGE TOP WINDS.....SOUTH 20 TO 25 MPH UNTIL 1200. WEST AFTER 1700.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....SOUTH 20 TO 25 MPH UNTIL 1100, THEN SOUTHWEST
30 TO 35 MPH UNTIL 1600, THEN WEST AROUND 25
MPH.
MIXING HEIGHT.......800-2800 FT AGL.
SMOKE DISPERSAL.....POOR TO FAIR.
TONIGHT
SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
CHANCE OF RAIN SHOWERS EARLY IN THE EVENING.
CHANCE OF SNOW SHOWERS IN THE EVENING, THEN
SLIGHT CHANCE OF SNOW SHOWERS LATE IN THE
EVENING. CHANCE OF PRECIPITATION 50 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....14-19.
24 HR TREND......9 DEGREES COOLER.
MAX HUMIDITY........78-84 PERCENT.
24 HR TREND......16 PERCENT WETTER.
HUMIDITY RECOVERY...EXCELLENT.
20-FOOT WINDS.......NORTHWEST WINDS AROUND 20 MPH WITH GUSTS TO
AROUND 30 MPH UNTIL 2400, THEN AROUND 10 MPH
AND GUSTY.
RIDGE TOP WINDS.....NORTHWEST 20 TO 25 MPH UNTIL 0100, THEN WEST
AROUND 15 MPH.
CHC OF WETTING RAIN.20 PERCENT UNTIL 2400, THEN ZERO PERCENT.
TRANSPORT WINDS.....NORTHWEST 20 TO 25 MPH UNTIL 0100, THEN AROUND
15 MPH.
MIXING HEIGHT.......400-1400 FT AGL.
SMOKE DISPERSAL.....POOR.
SATURDAY
SKY/WEATHER.........MOSTLY SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....26-31.
24 HR TREND......14 DEGREES COOLER.
MIN HUMIDITY........43-49 PERCENT.
24 HR TREND......1 PERCENT DRIER.
20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH UNTIL 1200, THEN SOUTH
AROUND 10 MPH UNTIL 1500, THEN UPSLOPE/UPVALLEY
5-9 MPH. GUSTS UP TO 15 MPH.
RIDGE TOP WINDS.....SOUTH 10 TO 15 MPH UNTIL 1600, THEN SOUTHEAST.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST 10 TO 15 MPH UNTIL 1600, THEN SOUTH.
MIXING HEIGHT.......400-2200 FT AGL UNTIL 1100, THEN 2200-3600 FT
AGL UNTIL 1600, THEN 400-1600 FT AGL.
SMOKE DISPERSAL.....POOR.
FORECAST DAYS 3 THROUGH 7...
SATURDAY NIGHT
PARTLY CLOUDY. LOWS AROUND 20. WINDS GENERALLY
LESS THAN 10 MPH.
SUNDAY
NOT AS COOL. MOSTLY CLOUDY WITH SLIGHT CHANCE OF
SHOWERS. LOWS AROUND 30. HIGHS IN THE LOWER 40S. SOUTH WINDS
AROUND 10 MPH.
MONDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS. LOWS IN
THE LOWER 30S. HIGHS AROUND 50. SOUTH WINDS AROUND 10 MPH.
TUESDAY
PARTLY CLOUDY. LOWS IN THE MID 30S. HIGHS AROUND 50.
SOUTH WINDS AROUND 10 MPH.
WEDNESDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND SNOW
SHOWERS. LOWS IN THE LOWER 30S. HIGHS IN THE MID 50S.
CHRISTMAS DAY
PARTLY CLOUDY. HIGHS AROUND 50.
WYZ276-192300-
CODY FOOTHILLS-
INCLUDING THE CITIES OF CLARK, CODY, AND MEETEETSE
501 AM MST FRI DEC 19 2025
..HIGH WIND WARNING IN EFFECT UNTIL 5 PM MST THIS AFTERNOON
TODAY
SKY/WEATHER.........PARTLY CLOUDY. SLIGHT CHANCE OF RAIN SHOWERS IN
THE MORNING. CHANCE OF SNOW SHOWERS THROUGH THE
DAY. CHANCE OF RAIN SHOWERS IN THE AFTERNOON.
CHANCE OF PRECIPITATION 50 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....43-48.
24 HR TREND......8 DEGREES WARMER.
MIN HUMIDITY........46-52 PERCENT.
24 HR TREND......17 PERCENT WETTER.
20-FOOT WINDS.......WINDY. SOUTHWEST WINDS AROUND 30 MPH WITH GUSTS
TO AROUND 50 MPH UNTIL 1500, THEN WEST AROUND
20 MPH WITH GUSTS TO AROUND 35 MPH.
RIDGE TOP WINDS.....SOUTHWEST 35 TO 40 MPH UNTIL 1400, THEN WEST 25
TO 30 MPH.
CHC OF WETTING RAIN.5 PERCENT.
TRANSPORT WINDS.....SOUTHWEST 35 TO 40 MPH UNTIL 1100, THEN 40 TO
45 MPH UNTIL 1600, THEN WEST 25 TO 30 MPH.
MIXING HEIGHT.......800-2800 FT AGL UNTIL 1200, THEN 1400-3400 FT
AGL UNTIL 1700, THEN 800-1400 FT AGL.
SMOKE DISPERSAL.....GOOD TO VERY GOOD UNTIL 1600, THEN POOR TO
FAIR.
TONIGHT
SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY. SNOW
SHOWERS LIKELY AND SLIGHT CHANCE OF RAIN
SHOWERS IN THE EVENING. SNOW ACCUMULATION UP TO
1 INCH. CHANCE OF PRECIPITATION 70 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....18-23.
24 HR TREND......14 DEGREES COOLER.
MAX HUMIDITY........76-82 PERCENT.
24 HR TREND......28 PERCENT WETTER.
HUMIDITY RECOVERY...EXCELLENT.
20-FOOT WINDS.......NORTH WINDS AROUND 15 MPH WITH GUSTS TO AROUND
25 MPH UNTIL 2400, THEN WEST AND GUSTY.
RIDGE TOP WINDS.....NORTH 20 TO 25 MPH UNTIL 2300, THEN AROUND 15
MPH UNTIL 2400, THEN WEST.
CHC OF WETTING RAIN.35 PERCENT UNTIL 2400, THEN ZERO PERCENT.
TRANSPORT WINDS.....NORTHWEST 20 TO 25 MPH UNTIL 2300, THEN WEST 15
TO 20 MPH.
MIXING HEIGHT.......600-1400 FT AGL.
SMOKE DISPERSAL.....POOR.
SATURDAY
SKY/WEATHER.........MOSTLY SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....31-36.
24 HR TREND......11 DEGREES COOLER.
MIN HUMIDITY........40-46 PERCENT.
24 HR TREND......4 PERCENT DRIER.
20-FOOT WINDS.......WEST WINDS 10 TO 15 MPH. GUSTS UP TO 20 MPH
UNTIL 1200, THEN 25 MPH.
RIDGE TOP WINDS.....WEST 15 TO 20 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST 15 TO 20 MPH UNTIL 1100, THEN 25 TO 30 MPH
UNTIL 1500, THEN 15 TO 20 MPH.
MIXING HEIGHT.......600-2600 FT AGL UNTIL 1100, THEN 2600-4400 FT
AGL UNTIL 1600, THEN 600-2200 FT AGL.
SMOKE DISPERSAL.....POOR TO FAIR.
FORECAST DAYS 3 THROUGH 7...
SATURDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 20S. SOUTHWEST
WINDS AROUND 10 MPH.
SUNDAY
MOSTLY CLOUDY. CHANCE OF SHOWERS AND SLIGHT CHANCE OF
SNOW SHOWERS. LOWS IN THE LOWER 30S. HIGHS IN THE LOWER 40S.
SOUTHWEST WINDS AROUND 10 MPH.
MONDAY
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND SLIGHT CHANCE
OF SNOW SHOWERS. LOWS IN THE LOWER 30S. HIGHS IN THE UPPER 40S.
SOUTHWEST WINDS AROUND 15 MPH.
TUESDAY
PARTLY CLOUDY. LOWS IN THE MID 30S. HIGHS AROUND 50.
SOUTHWEST WINDS AROUND 10 MPH.
WEDNESDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND SNOW
SHOWERS. LOWS IN THE LOWER 30S. HIGHS IN THE LOWER 50S.
CHRISTMAS DAY
PARTLY CLOUDY. SLIGHT CHANCE OF SNOW SHOWERS IN
THE AFTERNOON. HIGHS IN THE UPPER 40S.
WYZ287-192300-
OWL CREEK MOUNTAINS-
501 AM MST FRI DEC 19 2025
..HIGH WIND WARNING IN EFFECT UNTIL 5 PM MST THIS AFTERNOON
TODAY
SKY/WEATHER.........PARTLY CLOUDY. SLIGHT CHANCE OF SNOW SHOWERS IN
THE MORNING. SLIGHT CHANCE OF RAIN SHOWERS
THROUGH THE DAY. CHANCE OF SNOW SHOWERS IN THE
AFTERNOON. CHANCE OF PRECIPITATION 50 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....39-44.
24 HR TREND......9 DEGREES WARMER.
MIN HUMIDITY........46-52 PERCENT.
24 HR TREND......19 PERCENT WETTER.
20-FOOT WINDS.......VERY WINDY. SOUTHWEST WINDS 40 TO 45 MPH WITH
GUSTS TO AROUND 70 MPH UNTIL 1200, THEN 30 TO
35 MPH WITH GUSTS TO AROUND 55 MPH.
RIDGE TOP WINDS.....WEST 50 TO 55 MPH UNTIL 0900. SOUTHWEST 30 TO
35 MPH AFTER 1600.
CHC OF WETTING RAIN.LESS THAN 5 PERCENT.
TRANSPORT WINDS.....WEST 50 TO 55 MPH UNTIL 1300. SOUTHWEST 30 TO
35 MPH AFTER 1600.
MIXING HEIGHT.......400-2400 FT AGL.
SMOKE DISPERSAL.....POOR TO FAIR.
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY THEN
BECOMING PARTLY CLOUDY. CHANCE OF RAIN SHOWERS
EARLY IN THE EVENING. CHANCE OF SNOW SHOWERS IN
THE EVENING, THEN SLIGHT CHANCE OF SNOW SHOWERS
AFTER MIDNIGHT. CHANCE OF PRECIPITATION 50
PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....19-24.
24 HR TREND......6 DEGREES COOLER.
MAX HUMIDITY........76-82 PERCENT.
24 HR TREND......28 PERCENT WETTER.
HUMIDITY RECOVERY...EXCELLENT.
20-FOOT WINDS.......BREEZY. SOUTHWEST WINDS AROUND 25 MPH WITH
GUSTS TO AROUND 35 MPH UNTIL 2100, THEN NORTH
10 TO 15 MPH AND GUSTY UNTIL 0300, THEN WEST
WITH GUSTS TO AROUND 15 MPH.
RIDGE TOP WINDS.....SOUTHWEST 25 TO 30 MPH UNTIL 2100, THEN
NORTHWEST 15 TO 20 MPH.
CHC OF WETTING RAIN.10 PERCENT UNTIL 2400, THEN ZERO PERCENT.
TRANSPORT WINDS.....WEST 25 TO 30 MPH UNTIL 2200, THEN NORTHWEST 15
TO 20 MPH.
MIXING HEIGHT.......400-1400 FT AGL.
SMOKE DISPERSAL.....POOR.
SATURDAY
SKY/WEATHER.........MOSTLY SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....29-34.
24 HR TREND......10 DEGREES COOLER.
MIN HUMIDITY........33-39 PERCENT.
24 HR TREND......11 PERCENT DRIER.
20-FOOT WINDS.......WEST WINDS 10 TO 15 MPH. GUSTS UP TO 20 MPH
UNTIL 1200, THEN 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.......1200-3200 FT AGL UNTIL 1700, THEN 400-800 FT
AGL.
SMOKE DISPERSAL.....POOR.
FORECAST DAYS 3 THROUGH 7...
SATURDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 20S. SOUTHWEST
WINDS AROUND 10 MPH.
SUNDAY
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND SNOW SHOWERS.
LOWS IN THE LOWER 30S. HIGHS IN THE LOWER 40S. SOUTHWEST WINDS
AROUND 10 MPH.
MONDAY
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND SLIGHT CHANCE
OF SNOW SHOWERS. LOWS IN THE LOWER 30S. HIGHS IN THE UPPER 40S.
SOUTHWEST WINDS AROUND 15 MPH.
TUESDAY
PARTLY CLOUDY. LOWS IN THE MID 30S. HIGHS IN THE UPPER
40S. SOUTHWEST WINDS AROUND 10 MPH.
WEDNESDAY
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND SNOW
SHOWERS. LOWS IN THE LOWER 30S. HIGHS IN THE LOWER 50S.
CHRISTMAS DAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
SNOW SHOWERS. HIGHS IN THE MID 40S.
WYZ286-192300-
ABSAROKA MOUNTAINS/NORTH SHOSHONE NF-
INCLUDING THE CITY OF PAHASKA
501 AM MST FRI DEC 19 2025
..WINTER STORM WARNING IN EFFECT UNTIL 5 AM MST SATURDAY
TODAY
SKY/WEATHER.........MOSTLY CLOUDY. BLOWING SNOW THROUGH THE DAY.
SNOW SHOWERS THROUGH THE DAY. SLIGHT CHANCE OF
THUNDERSTORMS LATE IN THE AFTERNOON. SNOW
ACCUMULATION UP TO 11 INCHES. CHANCE OF
PRECIPITATION NEAR 100 PERCENT.
CHANCE OF THUNDER...20 PERCENT.
MAX TEMPERATURE.....33-38.
24 HR TREND......5 DEGREES WARMER.
MIN HUMIDITY........65-71 PERCENT.
24 HR TREND......24 PERCENT WETTER.
20-FOOT WINDS.......WINDY. WEST WINDS 30 TO 35 MPH WITH GUSTS TO
AROUND 50 MPH.
RIDGE TOP WINDS.....WEST 35 TO 40 MPH.
CHC OF WETTING RAIN.67 PERCENT.
TRANSPORT WINDS.....WEST 35 TO 40 MPH UNTIL 1200, THEN 40 TO 45 MPH
UNTIL 1600, THEN AROUND 35 MPH.
MIXING HEIGHT.......400-2400 FT AGL.
SMOKE DISPERSAL.....FAIR TO GOOD.
TONIGHT
SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
BLOWING SNOW EARLY IN THE EVENING. PATCHY
BLOWING SNOW LATE IN THE EVENING. PATCHY
BLOWING SNOW LATE IN THE EVENING. SNOW SHOWERS
AND SLIGHT CHANCE OF THUNDERSTORMS IN THE
EVENING, THEN SLIGHT CHANCE OF SNOW SHOWERS
AFTER MIDNIGHT. SNOW ACCUMULATION OF 1 TO 4
INCHES. CHANCE OF PRECIPITATION 90 PERCENT.
CHANCE OF THUNDER...10 PERCENT.
MIN TEMPERATURE.....10-15.
24 HR TREND......11 DEGREES COOLER.
MAX HUMIDITY........77-83 PERCENT.
24 HR TREND......3 PERCENT DRIER.
HUMIDITY RECOVERY...EXCELLENT.
20-FOOT WINDS.......BREEZY. WEST WINDS 20 TO 25 MPH WITH GUSTS TO
AROUND 40 MPH UNTIL 0300, THEN AROUND 15 MPH
WITH GUSTS TO AROUND 25 MPH.
RIDGE TOP WINDS.....WEST 25 TO 30 MPH UNTIL 0200, THEN AROUND 20
MPH.
CHC OF WETTING RAIN.60 PERCENT UNTIL 2400, THEN ZERO PERCENT.
TRANSPORT WINDS.....WEST 30 TO 35 MPH UNTIL 0100, THEN AROUND 25
MPH.
MIXING HEIGHT.......400-2000 FT AGL.
SMOKE DISPERSAL.....POOR.
SATURDAY
SKY/WEATHER.........PARTLY CLOUDY. SLIGHT CHANCE OF SNOW SHOWERS IN
THE MORNING. CHANCE OF SNOW 20 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....20-25.
24 HR TREND......11 DEGREES COOLER.
MIN HUMIDITY........51-57 PERCENT.
24 HR TREND......16 PERCENT DRIER.
20-FOOT WINDS.......WEST WINDS 15 TO 20 MPH WITH GUSTS TO AROUND 35
MPH.
RIDGE TOP WINDS.....WEST 20 TO 25 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST 25 TO 30 MPH UNTIL 1400. AROUND 25 MPH
AFTER 1700.
MIXING HEIGHT.......1600-3600 FT AGL UNTIL 1700, THEN 600-1400 FT
AGL.
SMOKE DISPERSAL.....POOR TO FAIR.
FORECAST DAYS 3 THROUGH 7...
SATURDAY NIGHT
PARTLY CLOUDY. SLIGHT CHANCE OF SNOW SHOWERS
AFTER MIDNIGHT. LOWS AROUND 15. WEST WINDS AROUND 15 MPH.
SUNDAY
NOT AS COLD. SNOW SHOWERS AND SHOWERS. LOWS IN THE
UPPER 20S. HIGHS IN THE MID 30S. WEST WINDS AROUND 15 MPH.
MONDAY
SNOW SHOWERS WITH SHOWERS LIKELY. LOWS IN THE UPPER
20S. HIGHS IN THE MID 30S. WEST WINDS AROUND 20 MPH.
TUESDAY
PARTLY CLOUDY WITH CHANCE OF SNOW SHOWERS. LOWS AROUND
30. HIGHS IN THE UPPER 30S. WEST WINDS AROUND 15 MPH.
WEDNESDAY
PARTLY CLOUDY WITH CHANCE OF SNOW SHOWERS AND
SHOWERS. LOWS IN THE MID 20S. HIGHS IN THE UPPER 30S.
CHRISTMAS DAY
PARTLY CLOUDY WITH CHANCE OF SNOW SHOWERS. HIGHS
IN THE MID 30S.
WYZ140-192300-
YELLOWSTONE NATIONAL PARK-
INCLUDING THE CITIES OF LAKE, MAMMOTH, AND OLD FAITHFUL
501 AM MST FRI DEC 19 2025
..WINTER STORM WARNING IN EFFECT UNTIL 5 AM MST SATURDAY
TODAY
SKY/WEATHER.........CLOUDY. BLOWING SNOW THROUGH THE DAY. SNOW
SHOWERS THROUGH THE DAY. SLIGHT CHANCE OF
THUNDERSTORMS IN THE AFTERNOON. SNOW
ACCUMULATION OF 1 TO 13 INCHES. CHANCE OF
PRECIPITATION NEAR 100 PERCENT.
CHANCE OF THUNDER...10 PERCENT.
MAX TEMPERATURE.....31-36.
24 HR TREND......5 DEGREES WARMER.
MIN HUMIDITY........75-81 PERCENT.
24 HR TREND......18 PERCENT WETTER.
20-FOOT WINDS.......WINDY. SOUTHWEST WINDS AROUND 30 MPH WITH GUSTS
TO AROUND 45 MPH.
RIDGE TOP WINDS.....SOUTHWEST 30 TO 35 MPH.
CHC OF WETTING RAIN.65 PERCENT UNTIL 1200, THEN 80 PERCENT.
TRANSPORT WINDS.....SOUTHWEST 35 TO 40 MPH UNTIL 1400. WEST AFTER
1700.
MIXING HEIGHT.......400-2200 FT AGL.
SMOKE DISPERSAL.....FAIR TO GOOD.
TONIGHT
SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
BLOWING SNOW EARLY IN THE EVENING. PATCHY
BLOWING SNOW EARLY IN THE EVENING. PATCHY
BLOWING SNOW LATE IN THE EVENING. SNOW SHOWERS
AND SLIGHT CHANCE OF THUNDERSTORMS IN THE
EVENING. CHANCE OF SNOW SHOWERS AFTER MIDNIGHT.
SNOW ACCUMULATION OF 1 TO 3 INCHES. CHANCE OF
PRECIPITATION 90 PERCENT.
CHANCE OF THUNDER...10 PERCENT.
MIN TEMPERATURE.....8-13.
24 HR TREND......11 DEGREES COOLER.
MAX HUMIDITY........80-86 PERCENT.
24 HR TREND......5 PERCENT DRIER.
HUMIDITY RECOVERY...EXCELLENT.
20-FOOT WINDS.......BREEZY. WEST WINDS AROUND 25 MPH WITH GUSTS TO
AROUND 35 MPH UNTIL 2100, THEN 10 TO 15 MPH
WITH GUSTS TO AROUND 25 MPH.
RIDGE TOP WINDS.....WEST 25 TO 30 MPH UNTIL 2100, THEN 15 TO 20
MPH.
CHC OF WETTING RAIN.50 PERCENT UNTIL 2400, THEN ZERO PERCENT.
TRANSPORT WINDS.....WEST 30 TO 35 MPH UNTIL 2200. AROUND 15 MPH
AFTER 0100.
MIXING HEIGHT.......400-1800 FT AGL.
SMOKE DISPERSAL.....POOR.
SATURDAY
SKY/WEATHER.........PARTLY CLOUDY. CHANCE OF SNOW SHOWERS. SLIGHT
CHANCE OF SNOW SHOWERS LATE IN THE AFTERNOON.
CHANCE OF SNOW 50 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....21-26.
24 HR TREND......9 DEGREES COOLER.
MIN HUMIDITY........60-66 PERCENT.
24 HR TREND......19 PERCENT DRIER.
20-FOOT WINDS.......SOUTHWEST WINDS AROUND 10 MPH WITH GUSTS TO
AROUND 25 MPH.
RIDGE TOP WINDS.....SOUTHWEST AROUND 15 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....SOUTHWEST 15 TO 20 MPH UNTIL 1100, THEN 20 TO
25 MPH.
MIXING HEIGHT.......800-2800 FT AGL.
SMOKE DISPERSAL.....POOR TO FAIR.
FORECAST DAYS 3 THROUGH 7...
SATURDAY NIGHT
MOSTLY CLOUDY. SLIGHT CHANCE OF SNOW SHOWERS IN
THE EVENING, THEN CHANCE OF SNOW SHOWERS AFTER MIDNIGHT. LOWS
AROUND 12. SOUTHWEST WINDS AROUND 10 MPH.
SUNDAY THROUGH MONDAY
SNOW SHOWERS. LOWS IN THE UPPER 20S.
HIGHS 31 TO 36. SOUTHWEST WINDS 10 TO 15 MPH.
TUESDAY
MOSTLY CLOUDY WITH CHANCE OF SNOW SHOWERS AND SLIGHT
CHANCE OF SHOWERS. LOWS IN THE UPPER 20S. HIGHS IN THE MID 30S.
SOUTH WINDS AROUND 10 MPH.
WEDNESDAY
MOSTLY CLOUDY WITH SNOW SHOWERS LIKELY. LOWS IN THE
LOWER 20S. HIGHS IN THE MID 30S.
CHRISTMAS DAY
MOSTLY CLOUDY WITH CHANCE OF SNOW SHOWERS. HIGHS
IN THE LOWER 30S.
WYZ415-192300-
NORTH ZONE BRIDGER TETON NF AND GRAND TETON NP-
INCLUDING THE CITIES OF JACKSON AND MORAN
501 AM MST FRI DEC 19 2025
..WINTER STORM WARNING IN EFFECT UNTIL 5 AM MST SATURDAY
TODAY
SKY/WEATHER.........CLOUDY. BLOWING SNOW EARLY IN THE MORNING.
PATCHY BLOWING SNOW LATE IN THE MORNING, THEN
BLOWING SNOW LATE IN THE MORNING. SNOW SHOWERS
THROUGH THE DAY. SLIGHT CHANCE OF RAIN SHOWERS
LATE IN THE AFTERNOON. SLIGHT CHANCE OF
THUNDERSTORMS LATE IN THE AFTERNOON. SNOW
ACCUMULATION OF 2 TO 15 INCHES. CHANCE OF
PRECIPITATION NEAR 100 PERCENT.
CHANCE OF THUNDER...10 PERCENT.
MAX TEMPERATURE.....29-34.
24 HR TREND......5 DEGREES WARMER.
MIN HUMIDITY........80-86 PERCENT.
24 HR TREND......21 PERCENT WETTER.
20-FOOT WINDS.......BREEZY. SOUTHWEST WINDS AROUND 25 MPH WITH
GUSTS TO AROUND 40 MPH.
RIDGE TOP WINDS.....SOUTHWEST 25 TO 30 MPH.
CHC OF WETTING RAIN.87 PERCENT.
TRANSPORT WINDS.....SOUTHWEST 30 TO 35 MPH.
MIXING HEIGHT.......400-2200 FT AGL.
SMOKE DISPERSAL.....FAIR TO GOOD.
TONIGHT
SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
BLOWING SNOW EARLY IN THE EVENING. PATCHY
BLOWING SNOW LATE IN THE EVENING. SNOW SHOWERS,
RAIN SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS
IN THE EVENING, THEN CHANCE OF SNOW SHOWERS
AFTER MIDNIGHT. SNOW ACCUMULATION OF 1 TO 5
INCHES. CHANCE OF PRECIPITATION NEAR 100
PERCENT.
CHANCE OF THUNDER...10 PERCENT.
MIN TEMPERATURE.....9-14.
24 HR TREND......9 DEGREES COOLER.
MAX HUMIDITY........88-94 PERCENT.
24 HR TREND......3 PERCENT DRIER.
HUMIDITY RECOVERY...EXCELLENT.
20-FOOT WINDS.......BREEZY. WEST WINDS 20 TO 25 MPH WITH GUSTS TO
AROUND 40 MPH UNTIL 2400, THEN 10 TO 15 MPH AND
GUSTY.
RIDGE TOP WINDS.....WEST 25 TO 30 MPH UNTIL 2400, THEN 15 TO 20
MPH.
CHC OF WETTING RAIN.80 PERCENT UNTIL 2400, THEN 5 PERCENT.
TRANSPORT WINDS.....WEST 30 TO 35 MPH UNTIL 2400. AROUND 15 MPH
AFTER 0500.
MIXING HEIGHT.......600-1800 FT AGL.
SMOKE DISPERSAL.....POOR.
SATURDAY
SKY/WEATHER.........PARTLY CLOUDY. CHANCE OF SNOW SHOWERS, THEN
SLIGHT CHANCE OF SNOW SHOWERS LATE IN THE
AFTERNOON. CHANCE OF SNOW 50 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....20-25.
24 HR TREND......8 DEGREES COOLER.
MIN HUMIDITY........67-73 PERCENT.
24 HR TREND......19 PERCENT DRIER.
20-FOOT WINDS.......SOUTHWEST WINDS AROUND 10 MPH WITH GUSTS TO
AROUND 25 MPH.
RIDGE TOP WINDS.....SOUTHWEST AROUND 15 MPH.
CHC OF WETTING RAIN.LESS THAN 5 PERCENT.
TRANSPORT WINDS.....WEST 15 TO 20 MPH UNTIL 1300. SOUTHWEST AFTER
1600.
MIXING HEIGHT.......1000-3000 FT AGL UNTIL 1700, THEN 600-1000 FT
AGL.
SMOKE DISPERSAL.....POOR.
FORECAST DAYS 3 THROUGH 7...
SATURDAY NIGHT
SLIGHT CHANCE OF SNOW SHOWERS IN THE EVENING,
THEN SNOW SHOWERS LIKELY AFTER MIDNIGHT. LOWS AROUND 14.
SOUTHWEST WINDS AROUND 10 MPH.
SUNDAY THROUGH MONDAY
SNOW SHOWERS AND SHOWERS. LOWS IN THE
UPPER 20S. HIGHS IN THE MID 30S. SOUTHWEST WINDS AROUND 10 MPH.
TUESDAY
MOSTLY CLOUDY WITH CHANCE OF SNOW SHOWERS AND SHOWERS.
LOWS IN THE UPPER 20S. HIGHS IN THE UPPER 30S. SOUTH WINDS AROUND
10 MPH.
WEDNESDAY
SNOW SHOWERS AND SHOWERS. LOWS IN THE LOWER 20S.
HIGHS IN THE MID 30S.
CHRISTMAS DAY
SNOW SHOWERS LIKELY. HIGHS IN THE MID 30S.
WYZ416-192300-
WEST WIND RIVER MOUNTAINS/EAST ZONE BRIDGER TETON NF-
501 AM MST FRI DEC 19 2025
..WINTER STORM WARNING IN EFFECT UNTIL 5 AM MST SATURDAY
TODAY
SKY/WEATHER.........MOSTLY CLOUDY. AREAS OF BLOWING SNOW EARLY IN
THE MORNING. BLOWING SNOW IN THE LATE MORNING
AND AFTERNOON. CHANCE OF SNOW SHOWERS EARLY IN
THE MORNING. SNOW SHOWERS EARLY IN THE MORNING.
SNOW ACCUMULATION OF 1 TO 15 INCHES. CHANCE OF
SNOW NEAR 100 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....27-32.
24 HR TREND......6 DEGREES WARMER.
MIN HUMIDITY........76-82 PERCENT.
24 HR TREND......24 PERCENT WETTER.
20-FOOT WINDS.......BREEZY. SOUTHWEST WINDS 20 TO 25 MPH. GUSTS UP
TO 35 MPH UNTIL 1200, THEN 40 MPH.
RIDGE TOP WINDS.....SOUTHWEST 25 TO 30 MPH.
CHC OF WETTING RAIN.60 PERCENT UNTIL 1200, THEN 80 PERCENT.
TRANSPORT WINDS.....SOUTHWEST 25 TO 30 MPH UNTIL 1100, THEN 35 TO
40 MPH.
MIXING HEIGHT.......400-2000 FT AGL.
SMOKE DISPERSAL.....POOR TO FAIR.
TONIGHT
SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
BLOWING SNOW IN THE EVENING. PATCHY BLOWING
SNOW LATE IN THE EVENING. PATCHY BLOWING SNOW
AFTER MIDNIGHT. SNOW SHOWERS IN THE EVENING,
THEN CHANCE OF SNOW SHOWERS AFTER MIDNIGHT.
SNOW ACCUMULATION OF 2 TO 7 INCHES. CHANCE OF
SNOW NEAR 100 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....8-13.
24 HR TREND......8 DEGREES COOLER.
MAX HUMIDITY........88-94 PERCENT.
24 HR TREND......1 PERCENT WETTER.
HUMIDITY RECOVERY...EXCELLENT.
20-FOOT WINDS.......WINDY. WEST WINDS 25 TO 30 MPH WITH GUSTS TO
AROUND 45 MPH UNTIL 0300, THEN AROUND 15 MPH
AND GUSTY.
RIDGE TOP WINDS.....WEST 30 TO 35 MPH UNTIL 0200. AROUND 15 MPH
AFTER 0500.
CHC OF WETTING RAIN.85 PERCENT UNTIL 2400, THEN 15 PERCENT.
TRANSPORT WINDS.....WEST 30 TO 35 MPH UNTIL 0400, THEN AROUND 25
MPH.
MIXING HEIGHT.......400-1600 FT AGL.
SMOKE DISPERSAL.....POOR.
SATURDAY
SKY/WEATHER.........PARTLY CLOUDY. SLIGHT CHANCE OF SNOW SHOWERS.
CHANCE OF SNOW 20 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....19-24.
24 HR TREND......7 DEGREES COOLER.
MIN HUMIDITY........62-68 PERCENT.
24 HR TREND......16 PERCENT DRIER.
20-FOOT WINDS.......WEST WINDS AROUND 15 MPH WITH GUSTS TO AROUND
30 MPH.
RIDGE TOP WINDS.....WEST 15 TO 20 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST 20 TO 25 MPH UNTIL 1400. SOUTHWEST AFTER
1600.
MIXING HEIGHT.......600-2600 FT AGL.
SMOKE DISPERSAL.....POOR.
FORECAST DAYS 3 THROUGH 7...
SATURDAY NIGHT
MOSTLY CLOUDY. CHANCE OF SNOW SHOWERS AFTER
MIDNIGHT. LOWS AROUND 12. SOUTHWEST WINDS AROUND 10 MPH.
SUNDAY
SNOW SHOWERS. LOWS IN THE UPPER 20S. HIGHS IN THE LOWER
30S. SOUTHWEST WINDS AROUND 15 MPH.
MONDAY
CLOUDY WITH SNOW SHOWERS. LOWS IN THE MID 20S. HIGHS IN
THE LOWER 30S. SOUTHWEST WINDS AROUND 15 MPH.
TUESDAY
MOSTLY CLOUDY WITH CHANCE OF SNOW SHOWERS. LOWS IN THE
MID 20S. HIGHS IN THE MID 30S. SOUTHWEST WINDS AROUND 10 MPH.
WEDNESDAY
SNOW SHOWERS LIKELY. LOWS IN THE LOWER 20S. HIGHS IN
THE MID 30S.
CHRISTMAS DAY
MOSTLY CLOUDY WITH CHANCE OF SNOW SHOWERS. HIGHS
IN THE LOWER 30S.
WYZ288-192300-
EAST WIND RIVER MOUNTAINS/SOUTH SHOSHONE NF-
INCLUDING THE CITIES OF DUBOIS AND SOUTH PASS
501 AM MST FRI DEC 19 2025
..WINTER STORM WARNING IN EFFECT UNTIL 5 AM MST SATURDAY
TODAY
SKY/WEATHER.........MOSTLY CLOUDY. BLOWING SNOW THROUGH THE DAY.
CHANCE OF SNOW SHOWERS EARLY IN THE MORNING.
SNOW SHOWERS IN THE LATE MORNING AND AFTERNOON.
SNOW ACCUMULATION UP TO 15 INCHES. CHANCE OF
SNOW NEAR 100 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....34-39.
24 HR TREND......6 DEGREES WARMER.
MIN HUMIDITY........65-71 PERCENT.
24 HR TREND......21 PERCENT WETTER.
20-FOOT WINDS.......VERY WINDY. SOUTHWEST WINDS 35 TO 40 MPH. GUSTS
UP TO 60 MPH UNTIL 1500, THEN 50 MPH.
RIDGE TOP WINDS.....SOUTHWEST 40 TO 45 MPH.
CHC OF WETTING RAIN.45 PERCENT UNTIL 1200, THEN 60 PERCENT.
TRANSPORT WINDS.....SOUTHWEST 45 TO 50 MPH UNTIL 1700, THEN AROUND
40 MPH.
MIXING HEIGHT.......400-2000 FT AGL.
SMOKE DISPERSAL.....FAIR TO GOOD.
TONIGHT
SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
BLOWING SNOW IN THE EVENING. PATCHY BLOWING
SNOW LATE IN THE EVENING. PATCHY BLOWING SNOW
EARLY IN THE MORNING. SNOW SHOWERS IN THE
EVENING, THEN CHANCE OF SNOW SHOWERS AFTER
MIDNIGHT. SNOW ACCUMULATION UP TO 9 INCHES.
CHANCE OF SNOW 90 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....13-18.
24 HR TREND......8 DEGREES COOLER.
MAX HUMIDITY........79-85 PERCENT.
24 HR TREND......7 PERCENT WETTER.
HUMIDITY RECOVERY...EXCELLENT.
20-FOOT WINDS.......WINDY. WEST WINDS 30 TO 35 MPH WITH GUSTS TO
AROUND 50 MPH UNTIL 2400, THEN AROUND 25 MPH
WITH GUSTS TO AROUND 40 MPH.
RIDGE TOP WINDS.....WEST 35 TO 40 MPH UNTIL 2400, THEN AROUND 30
MPH.
CHC OF WETTING RAIN.70 PERCENT UNTIL 2400, THEN 15 PERCENT.
TRANSPORT WINDS.....WEST 35 TO 40 MPH UNTIL 0200, THEN AROUND 30
MPH.
MIXING HEIGHT.......400-1600 FT AGL.
SMOKE DISPERSAL.....POOR.
SATURDAY
SKY/WEATHER.........PARTLY CLOUDY. SLIGHT CHANCE OF SNOW SHOWERS.
CHANCE OF SNOW 20 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....24-29.
24 HR TREND......8 DEGREES COOLER.
MIN HUMIDITY........51-57 PERCENT.
24 HR TREND......15 PERCENT DRIER.
20-FOOT WINDS.......WEST WINDS AROUND 20 MPH WITH GUSTS TO AROUND
40 MPH.
RIDGE TOP WINDS.....WEST 25 TO 30 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST 30 TO 35 MPH UNTIL 1200. AROUND 30 MPH
AFTER 1700.
MIXING HEIGHT.......400-2400 FT AGL.
SMOKE DISPERSAL.....POOR TO FAIR.
FORECAST DAYS 3 THROUGH 7...
SATURDAY NIGHT
PARTLY CLOUDY. CHANCE OF SNOW SHOWERS AFTER
MIDNIGHT. LOWS AROUND 18. WEST WINDS AROUND 15 MPH.
SUNDAY
SNOW SHOWERS WITH SHOWERS LIKELY. LOWS IN THE LOWER
30S. HIGHS IN THE MID 30S. WEST WINDS AROUND 20 MPH.
MONDAY
MOSTLY CLOUDY. CHANCE OF SNOW SHOWERS AND SHOWERS. LOWS
IN THE UPPER 20S. HIGHS IN THE UPPER 30S. SOUTHWEST WINDS AROUND
20 MPH.
TUESDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF SNOW SHOWERS. LOWS
IN THE LOWER 30S. HIGHS AROUND 40. SOUTHWEST WINDS AROUND 15 MPH.
WEDNESDAY
SNOW SHOWERS LIKELY AND CHANCE OF SHOWERS. LOWS IN
THE MID 20S. HIGHS IN THE UPPER 30S.
CHRISTMAS DAY
PARTLY CLOUDY WITH CHANCE OF SNOW SHOWERS. HIGHS
IN THE UPPER 30S.
WYZ414-192300-
SALT AND WYOMING RANGES/WEST ZONE BRIDGER TETON NF-
INCLUDING THE CITY OF AFTON
501 AM MST FRI DEC 19 2025
..WINTER STORM WARNING IN EFFECT UNTIL 5 AM MST SATURDAY
TODAY
SKY/WEATHER.........MOSTLY CLOUDY. PATCHY BLOWING SNOW EARLY IN THE
MORNING. PATCHY BLOWING SNOW EARLY IN THE
MORNING. BLOWING SNOW LATE IN THE MORNING. SNOW
SHOWERS THROUGH THE DAY. RAIN SHOWERS IN THE
AFTERNOON. SNOW ACCUMULATION OF 1 TO 10 INCHES.
CHANCE OF PRECIPITATION NEAR 100 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....28-33.
24 HR TREND......4 DEGREES WARMER.
MIN HUMIDITY........75-81 PERCENT.
24 HR TREND......16 PERCENT WETTER.
20-FOOT WINDS.......BREEZY. SOUTHWEST WINDS 20 TO 25 MPH WITH GUSTS
TO AROUND 35 MPH.
RIDGE TOP WINDS.....SOUTHWEST 25 TO 30 MPH.
CHC OF WETTING RAIN.40 PERCENT UNTIL 1200, THEN 90 PERCENT.
TRANSPORT WINDS.....SOUTHWEST 30 TO 35 MPH.
MIXING HEIGHT.......400-2000 FT AGL.
SMOKE DISPERSAL.....POOR TO FAIR.
TONIGHT
SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
BLOWING SNOW IN THE EVENING. PATCHY BLOWING
SNOW LATE IN THE EVENING. PATCHY BLOWING SNOW
AFTER MIDNIGHT. SNOW SHOWERS AND RAIN SHOWERS
IN THE EVENING, THEN SNOW SHOWERS LIKELY AFTER
MIDNIGHT. SNOW ACCUMULATION UP TO 7 INCHES.
CHANCE OF PRECIPITATION NEAR 100 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....12-17.
24 HR TREND......8 DEGREES COOLER.
MAX HUMIDITY........89-95 PERCENT.
24 HR TREND......3 PERCENT DRIER.
HUMIDITY RECOVERY...EXCELLENT.
20-FOOT WINDS.......BREEZY. WEST WINDS 20 TO 25 MPH. GUSTS UP TO 40
MPH UNTIL 0300, THEN 25 MPH.
RIDGE TOP WINDS.....WEST 25 TO 30 MPH UNTIL 0500, THEN AROUND 20
MPH.
CHC OF WETTING RAIN.85 PERCENT UNTIL 2400, THEN 25 PERCENT.
TRANSPORT WINDS.....WEST 30 TO 35 MPH UNTIL 0400, THEN AROUND 25
MPH.
MIXING HEIGHT.......400-2200 FT AGL.
SMOKE DISPERSAL.....POOR.
SATURDAY
SKY/WEATHER.........PARTLY CLOUDY. CHANCE OF SNOW SHOWERS. CHANCE
OF SNOW 50 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....22-27.
24 HR TREND......5 DEGREES COOLER.
MIN HUMIDITY........66-72 PERCENT.
24 HR TREND......4 PERCENT DRIER.
20-FOOT WINDS.......WEST WINDS 10 TO 15 MPH. GUSTS UP TO 30 MPH
UNTIL 1500, THEN 20 MPH.
RIDGE TOP WINDS.....WEST 15 TO 20 MPH.
CHC OF WETTING RAIN.15 PERCENT UNTIL 1200, THEN 5 PERCENT.
TRANSPORT WINDS.....WEST 20 TO 25 MPH UNTIL 1600, THEN SOUTHWEST
AROUND 15 MPH.
MIXING HEIGHT.......800-2800 FT AGL UNTIL 1700, THEN 400-800 FT
AGL.
SMOKE DISPERSAL.....POOR.
FORECAST DAYS 3 THROUGH 7...
SATURDAY NIGHT
CHANCE OF SNOW SHOWERS IN THE EVENING, THEN
SNOW SHOWERS LIKELY AFTER MIDNIGHT. LOWS AROUND 18. WINDS
GENERALLY LESS THAN 10 MPH.
SUNDAY THROUGH MONDAY
SNOW SHOWERS AND SHOWERS. LOWS 29 TO 34.
HIGHS IN THE MID 30S. SOUTHWEST WINDS AROUND 10 MPH.
TUESDAY
MOSTLY CLOUDY WITH CHANCE OF SNOW SHOWERS AND SHOWERS.
LOWS IN THE UPPER 20S. HIGHS IN THE UPPER 30S. SOUTH WINDS AROUND
10 MPH.
WEDNESDAY
SNOW SHOWERS AND SHOWERS. LOWS IN THE MID 20S. HIGHS
IN THE UPPER 30S.
CHRISTMAS DAY
SNOW SHOWERS LIKELY. HIGHS IN THE MID 30S.
WYZ278-192300-
UPPER GREEN RIVER BASIN/ROCK SPRINGS BLM-
INCLUDING THE CITIES OF BIG PINEY, FARSON, AND PINEDALE
501 AM MST FRI DEC 19 2025
..HIGH WIND WARNING IN EFFECT UNTIL 5 PM MST THIS AFTERNOON
TODAY
SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.
PATCHY BLOWING SNOW EARLY IN THE MORNING.
PATCHY BLOWING SNOW IN THE LATE MORNING AND
AFTERNOON. CHANCE OF SNOW SHOWERS THROUGH THE
DAY. CHANCE OF RAIN SHOWERS IN THE AFTERNOON.
CHANCE OF PRECIPITATION 50 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....33-38.
24 HR TREND......6 DEGREES WARMER.
MIN HUMIDITY........63-69 PERCENT.
24 HR TREND......16 PERCENT WETTER.
20-FOOT WINDS.......WINDY. SOUTHWEST WINDS AROUND 15 MPH WITH GUSTS
TO AROUND 25 MPH UNTIL 0900. AROUND 35 MPH WITH
GUSTS TO AROUND 50 MPH AFTER 1200.
RIDGE TOP WINDS.....SOUTHWEST 15 TO 20 MPH UNTIL 0800. 35 TO 40 MPH
AFTER 1100.
CHC OF WETTING RAIN.10 PERCENT UNTIL 1200, THEN 30 PERCENT.
TRANSPORT WINDS.....SOUTHWEST 20 TO 25 MPH UNTIL 0900, THEN 30 TO
35 MPH UNTIL 1100, THEN 40 TO 45 MPH UNTIL
1700, THEN AROUND 35 MPH.
MIXING HEIGHT.......600-2600 FT AGL.
SMOKE DISPERSAL.....FAIR TO GOOD.
TONIGHT
SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
PATCHY BLOWING SNOW IN THE EVENING. PATCHY
BLOWING SNOW LATE IN THE EVENING. CHANCE OF
RAIN SHOWERS IN THE EVENING. CHANCE OF SNOW
SHOWERS UNTIL EARLY MORNING. SLIGHT CHANCE OF
SNOW SHOWERS AFTER MIDNIGHT. CHANCE OF
PRECIPITATION 50 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....16-21.
24 HR TREND......5 DEGREES COOLER.
MAX HUMIDITY........86-92 PERCENT.
24 HR TREND......4 PERCENT DRIER.
HUMIDITY RECOVERY...EXCELLENT.
20-FOOT WINDS.......WINDY. WEST WINDS 25 TO 30 MPH WITH GUSTS TO
AROUND 45 MPH UNTIL 2400, THEN AROUND 15 MPH
WITH GUSTS TO AROUND 25 MPH.
RIDGE TOP WINDS.....WEST 30 TO 35 MPH UNTIL 2400, THEN 20 TO 25
MPH.
CHC OF WETTING RAIN.40 PERCENT UNTIL 2400, THEN 5 PERCENT.
TRANSPORT WINDS.....WEST 30 TO 35 MPH UNTIL 0100, THEN 20 TO 25
MPH.
MIXING HEIGHT.......600-1400 FT AGL.
SMOKE DISPERSAL.....POOR.
SATURDAY
SKY/WEATHER.........PARTLY CLOUDY. SLIGHT CHANCE OF SNOW SHOWERS.
CHANCE OF SNOW 20 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....27-32.
24 HR TREND......4 DEGREES COOLER.
MIN HUMIDITY........58-64 PERCENT.
24 HR TREND......14 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 20 TO 25 MPH UNTIL 1300, THEN 25 TO 30 MPH
UNTIL 1600, THEN AROUND 15 MPH.
MIXING HEIGHT.......1000-3000 FT AGL UNTIL 1700, THEN 400-600 FT
AGL.
SMOKE DISPERSAL.....POOR.
FORECAST DAYS 3 THROUGH 7...
SATURDAY NIGHT
MOSTLY CLOUDY. CHANCE OF SNOW SHOWERS AFTER
MIDNIGHT. LOWS AROUND 18. WINDS GENERALLY LESS THAN 10 MPH.
SUNDAY
NOT AS COOL. SNOW SHOWERS WITH SHOWERS LIKELY. LOWS
AROUND 30. HIGHS IN THE LOWER 40S. SOUTHWEST WINDS AROUND 10 MPH.
MONDAY
MOSTLY CLOUDY WITH CHANCE OF SHOWERS AND SNOW SHOWERS.
LOWS IN THE UPPER 20S. HIGHS IN THE LOWER 40S. SOUTHWEST WINDS
AROUND 10 MPH.
TUESDAY
MOSTLY CLOUDY WITH SLIGHT CHANCE OF SNOW SHOWERS. LOWS
IN THE UPPER 20S. HIGHS IN THE MID 40S. SOUTH WINDS AROUND
10 MPH.
WEDNESDAY THROUGH CHRISTMAS DAY
MOSTLY CLOUDY WITH CHANCE OF
SHOWERS AND SNOW SHOWERS. LOWS IN THE MID 20S. HIGHS 40 TO 45.
WYZ277-192300-
LINCOLN AND UINTA COUNTIES/LOWER ELEVATIONS-
INCLUDING THE CITIES OF EVANSTON, FORT BRIDGER, AND KEMMERER
501 AM MST FRI DEC 19 2025
..WINTER STORM WARNING IN EFFECT UNTIL 5 AM MST SATURDAY
TODAY
SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.
PATCHY BLOWING SNOW IN THE MORNING. PATCHY
BLOWING SNOW LATE IN THE MORNING, THEN PATCHY
BLOWING SNOW LATE IN THE AFTERNOON. CHANCE OF
SNOW SHOWERS AND SLIGHT CHANCE OF RAIN SHOWERS
IN THE MORNING. SNOW SHOWERS AND RAIN SHOWERS
IN THE AFTERNOON. SNOW ACCUMULATION UP TO 4
INCHES. CHANCE OF PRECIPITATION NEAR 100
PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....36-41.
24 HR TREND......4 DEGREES WARMER.
MIN HUMIDITY........59-65 PERCENT.
24 HR TREND......18 PERCENT WETTER.
20-FOOT WINDS.......WINDY. SOUTHWEST WINDS 25 TO 30 MPH. GUSTS UP
TO 35 MPH UNTIL 0900, THEN 50 MPH.
RIDGE TOP WINDS.....SOUTHWEST 30 TO 35 MPH.
CHC OF WETTING RAIN.ZERO PERCENT UNTIL 1200, THEN 55 PERCENT.
TRANSPORT WINDS.....SOUTHWEST 30 TO 35 MPH UNTIL 1100, THEN 40 TO
45 MPH UNTIL 1600, THEN AROUND 35 MPH.
MIXING HEIGHT.......1000-3000 FT AGL.
SMOKE DISPERSAL.....POOR TO FAIR.
TONIGHT
SKY/WEATHER.........MOSTLY CLOUDY. PATCHY BLOWING SNOW EARLY IN THE
EVENING. AREAS OF BLOWING SNOW IN THE EVENING.
PATCHY BLOWING SNOW LATE IN THE EVENING. RAIN
SHOWERS LIKELY IN THE EVENING. SNOW SHOWERS
LIKELY THROUGH THE NIGHT. SNOW ACCUMULATION UP
TO 3 INCHES. CHANCE OF PRECIPITATION 70
PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....22-27.
24 HR TREND......4 DEGREES COOLER.
MAX HUMIDITY........88-94 PERCENT.
24 HR TREND......2 PERCENT DRIER.
HUMIDITY RECOVERY...EXCELLENT.
20-FOOT WINDS.......WINDY. WEST WINDS AROUND 30 MPH WITH GUSTS TO
AROUND 45 MPH UNTIL 2400, THEN 15 TO 20 MPH
WITH GUSTS TO AROUND 35 MPH.
RIDGE TOP WINDS.....WEST 30 TO 35 MPH UNTIL 0100, THEN 20 TO 25
MPH.
CHC OF WETTING RAIN.65 PERCENT UNTIL 2400, THEN 30 PERCENT.
TRANSPORT WINDS.....WEST 30 TO 35 MPH UNTIL 0100, THEN 20 TO 25
MPH.
MIXING HEIGHT.......600-1400 FT AGL.
SMOKE DISPERSAL.....POOR.
SATURDAY
SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF SNOW SHOWERS. SLIGHT
CHANCE OF SNOW SHOWERS LATE IN THE AFTERNOON.
CHANCE OF SNOW 50 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....30-35.
24 HR TREND......4 DEGREES COOLER.
MIN HUMIDITY........68-74 PERCENT.
24 HR TREND......8 PERCENT WETTER.
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.10 PERCENT UNTIL 1200, THEN ZERO PERCENT.
TRANSPORT WINDS.....WEST 15 TO 20 MPH UNTIL 1100. AROUND 15 MPH
AFTER 1600.
MIXING HEIGHT.......600-2600 FT AGL.
SMOKE DISPERSAL.....POOR.
FORECAST DAYS 3 THROUGH 7...
SATURDAY NIGHT
MOSTLY CLOUDY. SLIGHT CHANCE OF SNOW SHOWERS IN
THE EVENING, THEN CHANCE OF SNOW SHOWERS AND SHOWERS AFTER
MIDNIGHT. LOWS IN THE MID 20S. WINDS GENERALLY LESS THAN 10 MPH.
SUNDAY
SHOWERS AND SNOW SHOWERS. LOWS IN THE MID 30S. HIGHS IN
THE LOWER 40S. SOUTHWEST WINDS AROUND 15 MPH.
MONDAY
MOSTLY CLOUDY WITH CHANCE OF SHOWERS AND SNOW SHOWERS.
LOWS IN THE LOWER 30S. HIGHS IN THE LOWER 40S. SOUTHWEST WINDS
AROUND 10 MPH.
TUESDAY
MOSTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND SNOW
SHOWERS. LOWS IN THE LOWER 30S. HIGHS IN THE MID 40S. SOUTHWEST
WINDS AROUND 10 MPH.
WEDNESDAY
SNOW SHOWERS AND SHOWERS LIKELY. LOWS IN THE UPPER
20S. HIGHS IN THE LOWER 40S.
CHRISTMAS DAY
MOSTLY CLOUDY WITH CHANCE OF SNOW SHOWERS AND
SHOWERS. HIGHS IN THE LOWER 40S.
WYZ279-192300-
SWEETWATER COUNTY/ROCK SPRINGS BLM/FLAMING GORGE NRA-
INCLUDING THE CITIES OF GREEN RIVER, ROCK SPRINGS, AND WAMSUTTER
501 AM MST FRI DEC 19 2025
..HIGH WIND WARNING IN EFFECT UNTIL 5 PM MST THIS AFTERNOON
TODAY
SKY/WEATHER.........PARTLY CLOUDY. SLIGHT CHANCE OF RAIN SHOWERS
LATE IN THE AFTERNOON. SLIGHT CHANCE OF SNOW
SHOWERS LATE IN THE AFTERNOON. CHANCE OF
PRECIPITATION 20 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....42-47.
24 HR TREND......9 DEGREES WARMER.
MIN HUMIDITY........39-45 PERCENT.
24 HR TREND......11 PERCENT WETTER.
20-FOOT WINDS.......WINDY. SOUTHWEST WINDS 20 TO 25 MPH WITH GUSTS
TO AROUND 40 MPH UNTIL 1200, THEN AROUND 30 MPH
WITH GUSTS TO AROUND 45 MPH.
RIDGE TOP WINDS.....SOUTHWEST 25 TO 30 MPH UNTIL 1100, THEN 30 TO
35 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....SOUTHWEST 30 TO 35 MPH UNTIL 1100, THEN WEST 45
TO 50 MPH UNTIL 1700, THEN AROUND 35 MPH.
MIXING HEIGHT.......400-2200 FT AGL UNTIL 1100, THEN 2400-4200 FT
AGL UNTIL 1600, THEN 1000-2200 FT AGL.
SMOKE DISPERSAL.....POOR TO FAIR UNTIL 1100, THEN GOOD TO VERY GOOD
UNTIL 1700, THEN POOR TO FAIR.
TONIGHT
SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF SNOW SHOWERS AND RAIN
SHOWERS. CHANCE OF PRECIPITATION 50 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....27-32.
24 HR TREND......2 DEGREES COOLER.
MAX HUMIDITY........81-87 PERCENT.
24 HR TREND......13 PERCENT WETTER.
HUMIDITY RECOVERY...EXCELLENT.
20-FOOT WINDS.......WINDY. WEST WINDS 25 TO 30 MPH WITH GUSTS TO
AROUND 45 MPH UNTIL 0300, THEN AROUND 20 MPH
WITH GUSTS TO AROUND 30 MPH.
RIDGE TOP WINDS.....WEST 30 TO 35 MPH UNTIL 0200, THEN AROUND 25
MPH.
CHC OF WETTING RAIN.7 PERCENT.
TRANSPORT WINDS.....WEST 30 TO 35 MPH UNTIL 0300, THEN AROUND 25
MPH.
MIXING HEIGHT.......600-1400 FT AGL.
SMOKE DISPERSAL.....POOR.
SATURDAY
SKY/WEATHER.........PARTLY CLOUDY. CHANCE OF SNOW SHOWERS IN THE
MORNING, THEN SLIGHT CHANCE OF SNOW SHOWERS
LATE IN THE MORNING. CHANCE OF SNOW 50 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....36-41.
24 HR TREND......6 DEGREES COOLER.
MIN HUMIDITY........57-63 PERCENT.
24 HR TREND......17 PERCENT WETTER.
20-FOOT WINDS.......WEST WINDS 15 TO 20 MPH WITH GUSTS TO AROUND 30
MPH.
RIDGE TOP WINDS.....WEST 20 TO 25 MPH UNTIL 1700, THEN AROUND 15
MPH.
CHC OF WETTING RAIN.LESS THAN 5 PERCENT.
TRANSPORT WINDS.....WEST 20 TO 25 MPH UNTIL 1100, THEN 30 TO 35 MPH
UNTIL 1600, THEN 20 TO 25 MPH.
MIXING HEIGHT.......1200-3200 FT AGL UNTIL 1700, THEN 600-800 FT
AGL.
SMOKE DISPERSAL.....POOR TO FAIR.
FORECAST DAYS 3 THROUGH 7...
SATURDAY NIGHT
MOSTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND
SNOW SHOWERS AFTER MIDNIGHT. LOWS IN THE UPPER 20S. WINDS
GENERALLY LESS THAN 10 MPH.
SUNDAY
MOSTLY CLOUDY WITH CHANCE OF SHOWERS AND SLIGHT CHANCE
OF SNOW SHOWERS. LOWS IN THE MID 30S. HIGHS IN THE MID 40S.
SOUTHWEST WINDS AROUND 15 MPH.
MONDAY
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS. LOWS IN THE
LOWER 30S. HIGHS IN THE UPPER 40S. SOUTHWEST WINDS AROUND 15 MPH.
TUESDAY
MOSTLY CLOUDY. LOWS IN THE MID 30S. HIGHS IN THE LOWER
50S. SOUTH WINDS AROUND 15 MPH.
WEDNESDAY THROUGH CHRISTMAS DAY
MOSTLY CLOUDY WITH CHANCE OF
SHOWERS AND SNOW SHOWERS. LOWS IN THE LOWER 30S. HIGHS 45 TO 50.
WYZ289-192300-
GRANITE/GREEN/FERRIS/RATTLESNAKE MOUNTAINS-
INCLUDING THE CITY OF JEFFREY CITY
501 AM MST FRI DEC 19 2025
..HIGH WIND WARNING IN EFFECT UNTIL 11 PM MST THIS EVENING
TODAY
SKY/WEATHER.........PARTLY CLOUDY. SLIGHT CHANCE OF SNOW SHOWERS
LATE IN THE AFTERNOON. CHANCE OF SNOW 20
PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....41-46.
24 HR TREND......10 DEGREES WARMER.
MIN HUMIDITY........46-52 PERCENT.
24 HR TREND......9 PERCENT WETTER.
20-FOOT WINDS.......VERY WINDY. SOUTHWEST WINDS 30 TO 35 MPH WITH
GUSTS TO AROUND 55 MPH UNTIL 1200, THEN AROUND
40 MPH WITH GUSTS TO AROUND 60 MPH.
RIDGE TOP WINDS.....SOUTHWEST 35 TO 40 MPH UNTIL 1100, THEN WEST 40
TO 45 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST 35 TO 40 MPH UNTIL 1000, THEN AROUND 45
MPH UNTIL 1100, THEN 55 TO 60 MPH UNTIL 1600,
THEN 45 TO 50 MPH.
MIXING HEIGHT.......400-2200 FT AGL UNTIL 1100, THEN 1200-3200 FT
AGL.
SMOKE DISPERSAL.....POOR UNTIL 1000, THEN VERY GOOD UNTIL 1600,
THEN FAIR TO GOOD.
TONIGHT
SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
CHANCE OF SNOW SHOWERS AND RAIN SHOWERS. PATCHY
BLOWING SNOW LATE IN THE EVENING. CHANCE OF
PRECIPITATION 50 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....24-29.
24 HR TREND......3 DEGREES COOLER.
MAX HUMIDITY........76-82 PERCENT.
24 HR TREND......2 PERCENT WETTER.
HUMIDITY RECOVERY...EXCELLENT.
20-FOOT WINDS.......VERY WINDY. SOUTHWEST WINDS 35 TO 40 MPH WITH
GUSTS TO AROUND 55 MPH UNTIL 2400, THEN WEST 20
TO 25 MPH WITH GUSTS TO AROUND 35 MPH.
RIDGE TOP WINDS.....SOUTHWEST 40 TO 45 MPH UNTIL 2400. WEST AROUND
25 MPH AFTER 0200.
CHC OF WETTING RAIN.5 PERCENT.
TRANSPORT WINDS.....WEST 40 TO 45 MPH UNTIL 2400. AROUND 25 MPH
AFTER 0500.
MIXING HEIGHT.......400-1200 FT AGL.
SMOKE DISPERSAL.....POOR.
SATURDAY
SKY/WEATHER.........PARTLY CLOUDY. SLIGHT CHANCE OF SNOW SHOWERS IN
THE MORNING. CHANCE OF SNOW 20 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....33-38.
24 HR TREND......7 DEGREES COOLER.
MIN HUMIDITY........42-48 PERCENT.
24 HR TREND......9 PERCENT DRIER.
20-FOOT WINDS.......BREEZY. WEST WINDS 20 TO 25 MPH. GUSTS UP TO 35
MPH UNTIL 1200, THEN 40 MPH.
RIDGE TOP WINDS.....WEST 20 TO 25 MPH UNTIL 1200. AROUND 20 MPH
AFTER 1700.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST 25 TO 30 MPH UNTIL 1100. AROUND 25 MPH
AFTER 1700.
MIXING HEIGHT.......1400-3400 FT AGL UNTIL 1700, THEN 400-800 FT
AGL.
SMOKE DISPERSAL.....GOOD UNTIL 1600, THEN POOR.
FORECAST DAYS 3 THROUGH 7...
SATURDAY NIGHT
PARTLY CLOUDY. SLIGHT CHANCE OF SNOW SHOWERS
AFTER MIDNIGHT. LOWS IN THE MID 20S. SOUTHWEST WINDS AROUND
15 MPH.
SUNDAY
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND SLIGHT CHANCE
OF SNOW SHOWERS. LOWS IN THE MID 30S. HIGHS IN THE MID 40S.
SOUTHWEST WINDS AROUND 20 MPH.
MONDAY
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND SLIGHT CHANCE
OF SNOW SHOWERS. LOWS IN THE MID 30S. HIGHS IN THE UPPER 40S.
SOUTHWEST WINDS AROUND 20 MPH.
TUESDAY
PARTLY CLOUDY. LOWS IN THE UPPER 30S. HIGHS IN THE
LOWER 50S. SOUTHWEST WINDS AROUND 15 MPH.
WEDNESDAY
PARTLY CLOUDY. CHANCE OF SHOWERS AND SNOW SHOWERS.
LOWS IN THE LOWER 30S. HIGHS AROUND 50.
CHRISTMAS DAY
PARTLY CLOUDY. CHANCE OF SNOW SHOWERS AND SLIGHT
CHANCE OF SHOWERS IN THE MORNING, THEN SLIGHT CHANCE OF SHOWERS
AND SNOW SHOWERS IN THE AFTERNOON. HIGHS IN THE MID 40S.
WYZ300-192300-
CASPER MOUNTAIN-
501 AM MST FRI DEC 19 2025
..HIGH WIND WARNING IN EFFECT UNTIL 11 PM MST THIS EVENING
TODAY
SKY/WEATHER.........PARTLY CLOUDY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....42-47.
24 HR TREND......12 DEGREES WARMER.
MIN HUMIDITY........40-46 PERCENT.
24 HR TREND......4 PERCENT WETTER.
20-FOOT WINDS.......WINDY. SOUTHWEST WINDS 30 TO 35 MPH. GUSTS UP
TO 50 MPH UNTIL 1200, THEN 55 MPH.
RIDGE TOP WINDS.....SOUTHWEST 35 TO 40 MPH UNTIL 1200, THEN 40 TO
45 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....SOUTHWEST AROUND 35 MPH UNTIL 1000, THEN WEST
45 TO 50 MPH UNTIL 1200, THEN 55 TO 60 MPH
UNTIL 1600, THEN 45 TO 50 MPH.
MIXING HEIGHT.......200-1600 FT AGL UNTIL 1000, THEN 2200-4200 FT
AGL UNTIL 1600, THEN 800-2200 FT AGL.
SMOKE DISPERSAL.....POOR UNTIL 1000, THEN GOOD UNTIL 1100, THEN
EXCELLENT UNTIL 1600, THEN GOOD UNTIL 1700,
THEN POOR.
TONIGHT
SKY/WEATHER.........MOSTLY CLOUDY. SNOW SHOWERS LIKELY AND CHANCE
OF RAIN SHOWERS IN THE EVENING. CHANCE OF SNOW
SHOWERS AFTER MIDNIGHT. PATCHY BLOWING SNOW
LATE IN THE EVENING. SNOW ACCUMULATION UP TO 1
INCH. CHANCE OF PRECIPITATION 70 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....21-26.
24 HR TREND......4 DEGREES COOLER.
MAX HUMIDITY........83-89 PERCENT.
24 HR TREND......16 PERCENT WETTER.
HUMIDITY RECOVERY...EXCELLENT.
20-FOOT WINDS.......WINDY. SOUTHWEST WINDS AROUND 35 MPH WITH GUSTS
TO AROUND 55 MPH UNTIL 2400, THEN NORTHWEST
AROUND 20 MPH WITH GUSTS TO AROUND 30 MPH UNTIL
0300, THEN AROUND 10 MPH WITH GUSTS TO AROUND
15 MPH.
RIDGE TOP WINDS.....WEST 35 TO 40 MPH UNTIL 0100, THEN NORTHWEST 15
TO 20 MPH.
CHC OF WETTING RAIN.ZERO PERCENT UNTIL 2400, THEN 35 PERCENT.
TRANSPORT WINDS.....WEST 40 TO 45 MPH UNTIL 0100. NORTHWEST 15 TO
20 MPH AFTER 0200.
MIXING HEIGHT.......600-1600 FT AGL.
SMOKE DISPERSAL.....POOR.
SATURDAY
SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY SUNNY.
SLIGHT CHANCE OF SNOW SHOWERS IN THE MORNING.
CHANCE OF SNOW 20 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....32-37.
24 HR TREND......10 DEGREES COOLER.
MIN HUMIDITY........39-45 PERCENT.
24 HR TREND......1 PERCENT DRIER.
20-FOOT WINDS.......WEST WINDS 10 TO 15 MPH. GUSTS UP TO 25 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 UNTIL 1000, THEN 25 TO 30 MPH
UNTIL 1400, THEN 30 TO 35 MPH UNTIL 1600, THEN
20 TO 25 MPH.
MIXING HEIGHT.......600-2600 FT AGL UNTIL 1100, THEN 2400-4200 FT
AGL UNTIL 1600, THEN 200-1600 FT AGL.
SMOKE DISPERSAL.....GOOD UNTIL 1600, THEN POOR.
FORECAST DAYS 3 THROUGH 7...
SATURDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 20S. SOUTHWEST
WINDS AROUND 10 MPH.
SUNDAY THROUGH TUESDAY
PARTLY CLOUDY. LOWS 36 TO 41. HIGHS
45 TO 50. SOUTHWEST WINDS 15 TO 20 MPH.
WEDNESDAY THROUGH CHRISTMAS DAY
PARTLY CLOUDY WITH SLIGHT
CHANCE OF SHOWERS AND SNOW SHOWERS. LOWS IN THE MID 30S. HIGHS
46 TO 51.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page