Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Riverton, WY
Issued by NWS Riverton, WY
768
FNUS55 KRIW 091202
FWFRIW
Fire Weather Planning Forecast for Western and Central Wyoming
National Weather Service Riverton WY
501 AM MST Tue Dec 9 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---
WYZ280-092300-
Natrona County/Casper BLM-
Including the cities of Casper and Midwest
501 AM MST Tue Dec 9 2025
...HIGH WIND WARNING IN EFFECT UNTIL 5 AM MST THURSDAY...
.TODAY...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Slight chance of rain late in the afternoon.
Slight chance of snow late in the afternoon.
Chance of precipitation 20 percent.
Chance of thunder...0 percent.
Max temperature.....49-54.
24 hr trend......9 degrees warmer.
Min humidity........45-51 percent.
24 hr trend......4 percent wetter.
20-foot winds.......Windy. Southwest winds 30 to 35 mph with gusts
to around 50 mph until 1500, then northwest
around 25 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.Zero percent.
Transport winds.....West 35 to 40 mph until 1500, then northwest 30
to 35 mph until 1700, then around 25 mph.
Mixing Height.......600-2400 ft agl until 1200, then 1400-3400 ft
agl until 1700, then 1000-1200 ft agl.
Smoke dispersal.....Poor to fair.
.TONIGHT...
Sky/weather.........Mostly cloudy then becoming partly cloudy then
becoming mostly cloudy. Slight chance of rain
early in the evening. Slight chance of snow
early in the evening. Chance of precipitation
20 percent.
Chance of thunder...0 percent.
Min temperature.....30-35.
24 hr trend......3 degrees cooler.
Max humidity........69-75 percent.
24 hr trend......11 percent wetter.
Humidity recovery...Good.
20-foot winds.......Northwest winds 10 to 15 mph with gusts to
around 25 mph until 2400, then southwest with
gusts to around 15 mph.
Ridge top winds.....Northwest 20 to 25 mph until 2100, then west
around 15 mph until 0100, then south.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest 20 to 25 mph until 2100, then west
around 15 mph until 0400, then southwest.
Mixing Height.......400-1400 ft agl.
Smoke dispersal.....Poor.
.WEDNESDAY...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Max temperature.....51-56.
24 hr trend......1 degree warmer.
Min humidity........49-55 percent.
24 hr trend......4 percent wetter.
20-foot winds.......Breezy. Southwest winds 15 to 20 mph with gusts
to around 30 mph until 1200, then 20 to 25 mph
with gusts to around 35 mph.
Ridge top winds.....Southwest 15 to 20 mph until 0900, then 25 to
30 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 15 to 20 mph until 0900, then west 25
to 30 mph.
Mixing Height.......400-2000 ft agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.WEDNESDAY NIGHT...Breezy. Mostly cloudy. Lows in the upper 30s.
Southwest winds around 25 mph.
.THURSDAY...Partly cloudy. Slight chance of rain and snow. Lows
in the lower 20s. Highs in the mid 50s. West winds around 20 mph.
.FRIDAY THROUGH SATURDAY...Partly cloudy. Lows 22 to 27. Highs
43 to 48. Southwest winds 10 to 15 mph.
.SUNDAY THROUGH MONDAY...Partly cloudy. Lows in the upper 20s.
Highs 49 to 54.
$$
WYZ283-092300-
Upper Wind River Basin/Wind River Basin-
Including the cities of Crowheart, Lander, Riverton, and Shoshoni
501 AM MST Tue Dec 9 2025
.TODAY...
Sky/weather.........Partly cloudy. Slight chance of rain through
the day. Chance of snow late in the afternoon.
Chance of precipitation 50 percent.
Chance of thunder...0 percent.
Max temperature.....48-53.
24 hr trend......8 degrees warmer.
Min humidity........45-51 percent.
24 hr trend......9 percent wetter.
20-foot winds.......Breezy. Southwest winds around 25 mph until
1200, then northwest. Gusts up to 35 mph.
Ridge top winds.....Southwest 25 to 30 mph until 1300, then
northwest 20 to 25 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 25 to 30 mph until 1200, then
northwest until 1700, then north around 20 mph.
Mixing Height.......600-2600 ft agl.
Smoke dispersal.....Poor to fair.
.TONIGHT...
Sky/weather.........Partly cloudy. Slight chance of rain in the
evening. Chance of snow through the night.
Chance of precipitation 50 percent.
Chance of thunder...0 percent.
Min temperature.....30-35.
24 hr trend......2 degrees cooler.
Max humidity........77-83 percent.
24 hr trend......10 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......West winds 10 to 15 mph with gusts to around 25
mph until 2400, then south with gusts to around
15 mph.
Ridge top winds.....Northwest 15 to 20 mph until 2300, then south
until 0200, then south around 15 mph until
0500, then southwest.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest 15 to 20 mph until 0200, then
southeast until 0500, then south.
Mixing Height.......600-1200 ft agl.
Smoke dispersal.....Poor.
.WEDNESDAY...
Sky/weather.........Partly cloudy. Slight chance of snow early in
the morning. Slight chance of rain early in the
morning. Chance of precipitation 20 percent.
Chance of thunder...0 percent.
Max temperature.....50-55.
24 hr trend......1 degree warmer.
Min humidity........50-56 percent.
24 hr trend......4 percent wetter.
20-foot winds.......Southwest winds 15 to 20 mph. Gusts up to 25
mph until 1200, then 30 mph.
Ridge top winds.....Southwest 15 to 20 mph until 1200, then around
25 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 15 to 20 mph until 1300, then around
25 mph.
Mixing Height.......400-1400 ft agl.
Smoke dispersal.....Poor.
.Forecast days 3 through 7......
.WEDNESDAY NIGHT...Partly cloudy. Lows in the mid 30s. Southwest
winds around 20 mph.
.THURSDAY THROUGH SATURDAY...Partly cloudy. Lows 26 to 31. Highs
47 to 52. Southwest winds 10 to 15 mph.
.SUNDAY THROUGH MONDAY...Partly cloudy. Lows in the upper 20s.
Highs 47 to 52.
$$
WYZ285-092300-
South Bighorn Mountains-
501 AM MST Tue Dec 9 2025
...WINTER WEATHER ADVISORY IN EFFECT UNTIL 5 PM MST WEDNESDAY...
.TODAY...
Sky/weather.........Partly cloudy. Slight chance of snow in the
morning. Chance of snow and slight chance of
rain in the afternoon. Chance of precipitation
50 percent.
Chance of thunder...0 percent.
Max temperature.....43-48.
24 hr trend......7 degrees warmer.
Min humidity........51-57 percent.
24 hr trend......8 percent wetter.
20-foot winds.......Windy. West winds 25 to 30 mph with gusts to
around 45 mph until 1500, then northwest around
20 mph with gusts to around 35 mph.
Ridge top winds.....West 30 to 35 mph until 1600, then northwest
around 25 mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....West 30 to 35 mph until 1500, then northwest 25
to 30 mph.
Mixing Height.......200-2200 ft agl.
Smoke dispersal.....Poor to fair.
.TONIGHT...
Sky/weather.........Mostly cloudy then becoming partly cloudy then
becoming mostly cloudy. Slight chance of snow
early in the evening. Slight chance of snow
early in the morning. Chance of snow 20
percent.
Chance of thunder...0 percent.
Min temperature.....28-33.
24 hr trend......Unchanged.
Max humidity........68-74 percent.
24 hr trend......4 percent wetter.
Humidity recovery...Good.
20-foot winds.......Northwest winds 15 to 20 mph with gusts to
around 30 mph until 2400, then southwest around
10 mph with gusts to around 15 mph.
Ridge top winds.....Northwest 20 to 25 mph until 2300, then around
15 mph until 0100, then southwest.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest 20 to 25 mph until 2400, then around
15 mph until 0400, then southwest.
Mixing Height.......200-1200 ft agl.
Smoke dispersal.....Poor.
.WEDNESDAY...
Sky/weather.........Partly cloudy. Slight chance of snow until late
afternoon. Chance of snow 20 percent.
Chance of thunder...0 percent.
Max temperature.....44-49.
24 hr trend......Unchanged.
Min humidity........50-56 percent.
24 hr trend......1 percent wetter.
20-foot winds.......Southwest winds 15 to 20 mph. Gusts up to 20
mph until 0900, then 35 mph.
Ridge top winds.....Southwest 15 to 20 mph until 1000, then west
around 25 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 15 to 20 mph until 0900, then west 25
to 30 mph.
Mixing Height.......200-1200 ft agl.
Smoke dispersal.....Poor.
.Forecast days 3 through 7......
.WEDNESDAY NIGHT...Partly cloudy. Slight chance of rain and snow
after midnight. Lows in the mid 30s. West winds around 20 mph.
.THURSDAY...Partly cloudy. Chance of snow and slight chance of
rain. Lows in the lower 20s. Highs in the mid 40s. West winds
around 15 mph.
.FRIDAY...Partly cloudy with slight chance of snow. Lows in the
mid 20s. Highs in the upper 30s. West winds around 10 mph.
.SATURDAY...Partly cloudy. Lows in the upper 20s. Highs in the
mid 30s. West winds around 10 mph.
.SUNDAY THROUGH MONDAY...Partly cloudy. Lows in the upper 20s.
Highs 41 to 46.
$$
WYZ281-092300-
Johnson County/Casper BLM-
Including the cities of Buffalo and Kaycee
501 AM MST Tue Dec 9 2025
.TODAY...
Sky/weather.........Partly cloudy. Slight chance of rain in the
morning. Chance of rain and slight chance of
snow in the afternoon. Chance of precipitation
50 percent.
Chance of thunder...0 percent.
Max temperature.....48-53.
24 hr trend......6 degrees warmer.
Min humidity........46-52 percent.
24 hr trend......6 percent wetter.
20-foot winds.......Southwest winds around 20 mph until 1200, then
northwest. Gusts up to 35 mph.
Ridge top winds.....Southwest around 25 mph until 1200, then
northwest.
Chc of wetting rain.Less than 5 percent.
Transport winds.....Southwest around 25 mph until 1100, then west
until 1300, then northwest 30 to 35 mph.
Mixing Height.......400-2400 ft agl until 1200, then 1800-3800 ft
agl until 1700, then 1400-1800 ft agl.
Smoke dispersal.....Fair to good.
.TONIGHT...
Sky/weather.........Partly cloudy then becoming mostly cloudy.
Slight chance of snow early in the evening.
Slight chance of snow early in the morning.
Chance of snow 20 percent.
Chance of thunder...0 percent.
Min temperature.....28-33.
24 hr trend......3 degrees cooler.
Max humidity........69-75 percent.
24 hr trend......6 percent wetter.
Humidity recovery...Good.
20-foot winds.......North winds 10 to 15 mph with gusts to around
30 mph until 2400. South with gusts to around
15 mph after 0300.
Ridge top winds.....North 20 to 25 mph until 2200, then northwest
around 15 mph until 0100, then west until 0300,
then south.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest 20 to 25 mph until 2400, then north
around 15 mph until 0400, then south.
Mixing Height.......400-2000 ft agl.
Smoke dispersal.....Poor.
.WEDNESDAY...
Sky/weather.........Mostly cloudy then becoming partly cloudy then
becoming mostly cloudy. Slight chance of rain
in the morning. Slight chance of snow through
the day. Chance of rain in the afternoon.
Chance of precipitation 40 percent.
Chance of thunder...0 percent.
Max temperature.....48-53.
24 hr trend......1 degree cooler.
Min humidity........51-57 percent.
24 hr trend......4 percent wetter.
20-foot winds.......South winds 10 to 15 mph with gusts to around
25 mph until 1500, then southwest with higher
gusts.
Ridge top winds.....South 15 to 20 mph until 1400, then southwest.
Chc of wetting rain.Zero percent.
Transport winds.....South 15 to 20 mph until 1300, then west.
Mixing Height.......400-1600 ft agl.
Smoke dispersal.....Poor.
.Forecast days 3 through 7......
.WEDNESDAY NIGHT...Mostly cloudy. Slight chance of rain in the
evening, then slight chance of rain and snow after midnight. Lows
in the mid 30s. Southwest winds around 10 mph.
.THURSDAY...Mostly cloudy with chance of snow and rain. Lows
around 15. Highs in the lower 50s. Northwest winds around 15 mph.
.FRIDAY...Colder. Mostly cloudy with slight chance of snow
showers. Lows around 15. Highs in the mid 30s. South winds around
10 mph.
.SATURDAY...Partly cloudy. Lows around 19. Highs in the lower
30s. Southwest winds around 10 mph.
.SUNDAY THROUGH MONDAY...Partly cloudy. Lows in the mid 20s.
Highs 47 to 52.
$$
WYZ282-092300-
South Bighorn Basin/Worland BLM-
Including the cities of Ten Sleep, Thermopolis, and Worland
501 AM MST Tue Dec 9 2025
.TODAY...
Sky/weather.........Mostly cloudy then becoming partly cloudy then
becoming mostly cloudy. Slight chance of rain
in the afternoon. Chance of snow late in the
afternoon. Chance of precipitation 50 percent.
Chance of thunder...0 percent.
Max temperature.....45-50.
24 hr trend......8 degrees warmer.
Min humidity........48-54 percent.
24 hr trend......5 percent wetter.
20-foot winds.......South winds 10 to 15 mph until 1200, then
northwest with gusts to around 25 mph.
Ridge top winds.....South 15 to 20 mph until 1100, then northwest.
Chc of wetting rain.Zero percent.
Transport winds.....South 15 to 20 mph until 1100, then northwest
until 1400, then north 20 to 25 mph.
Mixing Height.......600-2200 ft agl.
Smoke dispersal.....Poor to fair.
.TONIGHT...
Sky/weather.........Mostly cloudy. Slight chance of rain and snow
early in the evening. Slight chance of snow
early in the morning. Chance of precipitation
20 percent.
Chance of thunder...0 percent.
Min temperature.....27-32.
24 hr trend......Unchanged.
Max humidity........74-80 percent.
24 hr trend......1 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......Northwest winds around 10 mph and gusty until
2100, then south until 2400, then
downslope/downvalley 4-7 mph.
Ridge top winds.....Northwest 15 to 20 mph until 2100, then south
10 to 15 mph until 0400, then southeast.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest 15 to 20 mph until 2200, then north
around 10 mph until 2300, then southeast.
Mixing Height.......400-1400 ft agl.
Smoke dispersal.....Poor.
.WEDNESDAY...
Sky/weather.........Mostly cloudy then becoming partly cloudy then
becoming mostly cloudy. Slight chance of snow
in the morning. Slight chance of rain late in
the morning. Chance of precipitation 20
percent.
Chance of thunder...0 percent.
Max temperature.....44-49.
24 hr trend......2 degrees cooler.
Min humidity........53-59 percent.
24 hr trend......5 percent wetter.
20-foot winds.......South winds around 10 mph and gusty.
Ridge top winds.....South 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southeast 10 to 15 mph until 1100, then south.
Mixing Height.......400-1000 ft agl.
Smoke dispersal.....Poor.
.Forecast days 3 through 7......
.WEDNESDAY NIGHT...Mostly cloudy. Lows in the mid 30s. South
winds around 10 mph.
.THURSDAY...Mostly cloudy. Slight chance of rain and snow. Lows
in the mid 20s. Highs in the lower 50s. West winds around 10 mph.
.FRIDAY THROUGH SATURDAY...Partly cloudy. Lows in the mid 20s.
Highs 38 to 43. Winds generally less than 10 mph.
.SUNDAY THROUGH MONDAY...Partly cloudy. Lows in the upper 20s.
Highs in the upper 40s.
$$
WYZ275-092300-
North Bighorn Basin/Worland BLM-
Including the cities of Greybull, Lovell, and Powell
501 AM MST Tue Dec 9 2025
.TODAY...
Sky/weather.........Mostly cloudy then becoming partly cloudy then
becoming mostly cloudy. Slight chance of rain
in the morning. Chance of rain and snow in the
afternoon. Chance of precipitation 50 percent.
Chance of thunder...0 percent.
Max temperature.....42-47.
24 hr trend......5 degrees warmer.
Min humidity........49-55 percent.
24 hr trend......5 percent wetter.
20-foot winds.......South winds around 15 mph with higher gusts
until 0900, then southwest and gusty until
1200, then northwest with gusts to around 30
mph.
Ridge top winds.....South 15 to 20 mph until 1000, then southwest
until 1100, then northwest.
Chc of wetting rain.Less than 5 percent.
Transport winds.....South 15 to 20 mph until 1000. Northwest 20 to
25 mph after 1400.
Mixing Height.......400-2200 ft agl.
Smoke dispersal.....Poor to fair.
.TONIGHT...
Sky/weather.........Partly cloudy then becoming mostly cloudy.
Slight chance of snow early in the morning.
Chance of snow early in the morning. Chance of
snow 50 percent.
Chance of thunder...0 percent.
Min temperature.....27-32.
24 hr trend......2 degrees cooler.
Max humidity........78-84 percent.
24 hr trend......4 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......Northwest winds 10 to 15 mph with gusts to
around 25 mph until 2400, then
downslope/downvalley 4-7 mph until 0300, then
southeast around 10 mph with gusts to around 15
mph.
Ridge top winds.....Northwest 15 to 20 mph until 2300, then west
around 10 mph until 2400, then south until
0400, then southeast.
Chc of wetting rain.Zero percent.
Transport winds.....North 15 to 20 mph until 2300, then around 10
mph until 0100, then southeast.
Mixing Height.......400-1200 ft agl.
Smoke dispersal.....Poor.
.WEDNESDAY...
Sky/weather.........Mostly cloudy. Chance of snow and rain in the
morning. Slight chance of rain and snow in the
afternoon. Chance of precipitation 50 percent.
Chance of thunder...0 percent.
Max temperature.....42-47.
24 hr trend......1 degree cooler.
Min humidity........56-62 percent.
24 hr trend......6 percent wetter.
20-foot winds.......Southeast winds around 10 mph and gusty.
Ridge top winds.....Southeast around 15 mph.
Chc of wetting rain.10 percent until 1200, then zero percent.
Transport winds.....Southeast around 15 mph.
Mixing Height.......400-1000 ft agl.
Smoke dispersal.....Poor.
.Forecast days 3 through 7......
.WEDNESDAY NIGHT...Mostly cloudy with slight chance of rain. Lows
in the mid 30s. South winds around 10 mph.
.THURSDAY...Mostly cloudy with chance of rain and snow. Lows in
the lower 20s. Highs around 50. West winds around 10 mph.
.FRIDAY...Colder. Mostly cloudy. Chance of snow and slight chance
of showers. Lows around 20. Highs in the mid 30s. Winds generally
less than 10 mph.
.SATURDAY...Partly cloudy. Lows in the lower 20s. Highs in the
mid 30s. Winds generally less than 10 mph.
.SUNDAY THROUGH MONDAY...Partly cloudy. Lows in the mid 20s.
Highs in the mid 40s.
$$
WYZ276-092300-
Cody Foothills-
Including the cities of Clark, Cody, and Meeteetse
501 AM MST Tue Dec 9 2025
.TODAY...
Sky/weather.........Partly cloudy. Chance of rain through the day.
Chance of snow in the afternoon. Chance of
precipitation 50 percent.
Chance of thunder...0 percent.
Max temperature.....47-52.
24 hr trend......5 degrees warmer.
Min humidity........43-49 percent.
24 hr trend......11 percent wetter.
20-foot winds.......Breezy. West winds around 25 mph until 1500,
then northwest. Gusts up to 45 mph until 1500,
then 35 mph.
Ridge top winds.....West around 30 mph until 1400, then northwest.
Chc of wetting rain.Zero percent.
Transport winds.....West 30 to 35 mph until 1100. Northwest 25 to
30 mph after 1600.
Mixing Height.......800-2800 ft agl until 1200, then 1600-3600 ft
agl until 1700, then 1200-1600 ft agl.
Smoke dispersal.....Poor to fair.
.TONIGHT...
Sky/weather.........Partly cloudy then becoming mostly cloudy.
Slight chance of snow early in the evening.
Slight chance of snow after midnight, then
chance of snow early in the morning. Chance of
snow 50 percent.
Chance of thunder...0 percent.
Min temperature.....34-39.
24 hr trend......5 degrees cooler.
Max humidity........64-70 percent.
24 hr trend......12 percent wetter.
Humidity recovery...Good.
20-foot winds.......West winds 10 to 15 mph with gusts to around 25
mph until 2400, then south and gusty.
Ridge top winds.....West 15 to 20 mph until 2300, then south 10 to
15 mph until 0300, then 15 to 20 mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....Northwest 20 to 25 mph until 2200, then west
around 15 mph until 2400, then south.
Mixing Height.......600-1600 ft agl.
Smoke dispersal.....Poor.
.WEDNESDAY...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Chance of rain and snow in the morning, then
slight chance of rain in the afternoon. Chance
of precipitation 50 percent.
Chance of thunder...0 percent.
Max temperature.....48-53.
24 hr trend......Unchanged.
Min humidity........51-57 percent.
24 hr trend......7 percent wetter.
20-foot winds.......Southwest winds 15 to 20 mph with gusts to
around 35 mph until 1200, then west with gusts
to around 40 mph.
Ridge top winds.....South 20 to 25 mph until 1000, then southwest
25 to 30 mph.
Chc of wetting rain.10 percent until 1200, then zero percent.
Transport winds.....South 20 to 25 mph until 1100, then west 30 to
35 mph until 1600, then around 25 mph.
Mixing Height.......600-2200 ft agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.WEDNESDAY NIGHT...Partly cloudy with slight chance of rain. Lows
in the upper 30s. West winds around 20 mph.
.THURSDAY...Mostly cloudy. Chance of rain and snow. Lows in the
mid 20s. Highs in the lower 50s. West winds around 15 mph.
.FRIDAY...Partly cloudy. Slight chance of snow. Lows in the mid
20s. Highs in the lower 40s. West winds around 15 mph.
.SATURDAY...Partly cloudy. Lows in the upper 20s. Highs around
40. Southwest winds around 10 mph.
.SUNDAY THROUGH MONDAY...Partly cloudy. Lows around 30. Highs in
the upper 40s.
$$
WYZ287-092300-
Owl Creek Mountains-
501 AM MST Tue Dec 9 2025
.TODAY...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Slight chance of rain in the afternoon. Slight
chance of snow late in the afternoon. Chance of
precipitation 20 percent.
Chance of thunder...0 percent.
Max temperature.....45-50.
24 hr trend......9 degrees warmer.
Min humidity........45-51 percent.
24 hr trend......8 percent wetter.
20-foot winds.......Breezy. West winds around 25 mph until 1200,
then northwest. Gusts up to 35 mph.
Ridge top winds.....Southwest 25 to 30 mph until 1200, then
northwest 20 to 25 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 25 to 30 mph until 1400, then northwest
until 1600, then north around 20 mph.
Mixing Height.......800-2800 ft agl.
Smoke dispersal.....Poor to fair.
.TONIGHT...
Sky/weather.........Partly cloudy then becoming mostly cloudy.
Slight chance of rain and snow in the evening.
Chance of snow after midnight. Chance of
precipitation 40 percent.
Chance of thunder...0 percent.
Min temperature.....29-34.
24 hr trend......2 degrees cooler.
Max humidity........64-70 percent.
24 hr trend......8 percent wetter.
Humidity recovery...Good.
20-foot winds.......Northwest winds around 15 mph until 2100, then
south. Gusts up to 20 mph.
Ridge top winds.....Northwest 15 to 20 mph until 2100. South after
2200.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest 15 to 20 mph until 2300, then
southwest until 2400, then south.
Mixing Height.......200-1000 ft agl.
Smoke dispersal.....Poor.
.WEDNESDAY...
Sky/weather.........Partly cloudy. Slight chance of snow early in
the morning. Slight chance of rain late in the
morning. Chance of precipitation 20 percent.
Chance of thunder...0 percent.
Max temperature.....45-50.
24 hr trend......Unchanged.
Min humidity........50-56 percent.
24 hr trend......5 percent wetter.
20-foot winds.......Southwest winds 15 to 20 mph. Gusts up to 25
mph until 1200, then 30 mph.
Ridge top winds.....Southwest 20 to 25 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 20 to 25 mph until 1000, then west.
Mixing Height.......200-1400 ft agl.
Smoke dispersal.....Poor.
.Forecast days 3 through 7......
.WEDNESDAY NIGHT...Partly cloudy. Lows in the upper 30s.
Southwest winds around 20 mph.
.THURSDAY...Partly cloudy. Lows in the upper 20s. Highs around
50. West winds around 15 mph.
.FRIDAY THROUGH SATURDAY...Partly cloudy. Lows in the upper 20s.
Highs 39 to 44. West winds 10 to 15 mph.
.SUNDAY THROUGH MONDAY...Partly cloudy. Lows around 30. Highs
44 to 49.
$$
WYZ286-092300-
Absaroka Mountains/North Shoshone NF-
Including the city of Pahaska
501 AM MST Tue Dec 9 2025
...WINTER STORM WARNING IN EFFECT UNTIL 5 PM MST WEDNESDAY...
.TODAY...
Sky/weather.........Partly cloudy. Blowing snow through the day.
Slight chance of rain in the morning. Snow
through the day. Chance of rain in the
afternoon. Snow accumulation up to 8 inches.
Chance of precipitation near 100 percent.
Chance of thunder...0 percent.
Max temperature.....37-42.
24 hr trend......5 degrees warmer.
Min humidity........56-62 percent.
24 hr trend......3 percent wetter.
20-foot winds.......Windy. West winds 30 to 35 mph. Gusts up to 60
mph until 1500, then 45 mph.
Ridge top winds.....West 35 to 40 mph until 1600, then around 30
mph.
Chc of wetting rain.35 percent until 1200, then 45 percent.
Transport winds.....West 40 to 45 mph until 1600, then 30 to 35
mph.
Mixing Height.......800-2800 ft agl.
Smoke dispersal.....Fair to good.
.TONIGHT...
Sky/weather.........Partly cloudy then becoming mostly cloudy.
Chance of snow in the evening. Snow after
midnight. Snow accumulation up to 5 inches.
Chance of snow near 100 percent.
Chance of thunder...0 percent.
Min temperature.....26-31.
24 hr trend......2 degrees warmer.
Max humidity........75-81 percent.
24 hr trend......1 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......Breezy. West winds 20 to 25 mph with gusts to
around 40 mph until 2400, then 15 to 20 mph
with gusts to around 40 mph.
Ridge top winds.....West 25 to 30 mph until 2200. Around 30 mph
after 0500.
Chc of wetting rain.10 percent until 2400, then 30 percent.
Transport winds.....West 25 to 30 mph until 2300. Around 30 mph
after 0400.
Mixing Height.......400-2000 ft agl.
Smoke dispersal.....Poor.
.WEDNESDAY...
Sky/weather.........Mostly cloudy then becoming partly cloudy then
becoming mostly cloudy then becoming partly
cloudy. Snow with rain likely in the morning,
then snow likely and chance of rain in the
afternoon. Snow accumulation up to 6 inches.
Chance of precipitation 90 percent.
Chance of thunder...0 percent.
Max temperature.....40-45.
24 hr trend......3 degrees warmer.
Min humidity........62-68 percent.
24 hr trend......9 percent wetter.
20-foot winds.......Windy. West winds 25 to 30 mph with gusts to
around 50 mph.
Ridge top winds.....West 30 to 35 mph.
Chc of wetting rain.55 percent until 1200, then 35 percent.
Transport winds.....West 30 to 35 mph until 1000, then 40 to 45
mph.
Mixing Height.......600-2600 ft agl.
Smoke dispersal.....Fair to good.
.Forecast days 3 through 7......
.WEDNESDAY NIGHT...Windy. Partly cloudy with chance of rain and
snow. Lows in the lower 30s. West winds around 30 mph.
.THURSDAY...Breezy. Partly cloudy. Chance of snow and rain. Lows
around 30. Highs in the upper 30s. West winds around 25 mph.
.FRIDAY...Partly cloudy. Chance of snow. Lows in the upper 20s.
Highs in the upper 30s. West winds around 20 mph.
.SATURDAY...Partly cloudy with slight chance of snow showers.
Lows in the mid 20s. Highs in the mid 30s. West winds around
15 mph.
.SUNDAY THROUGH MONDAY...Partly cloudy. Lows in the mid 20s.
Highs in the upper 30s.
$$
WYZ140-092300-
Yellowstone National Park-
Including the cities of Lake, Mammoth, and Old Faithful
501 AM MST Tue Dec 9 2025
...WINTER STORM WARNING IN EFFECT UNTIL 5 PM MST WEDNESDAY...
.TODAY...
Sky/weather.........Mostly cloudy. Patchy blowing snow until late
afternoon. Patchy blowing snow early in the
afternoon. Snow until late afternoon, then snow
likely early in the afternoon. Chance of snow
late in the afternoon. Snow accumulation up to
8 inches. Chance of snow near 100 percent.
Chance of thunder...0 percent.
Max temperature.....37-42.
24 hr trend......6 degrees warmer.
Min humidity........64-70 percent.
24 hr trend......10 percent drier.
20-foot winds.......West winds 15 to 20 mph. Gusts up to 40 mph
until 1500, then 30 mph.
Ridge top winds.....West 25 to 30 mph until 1400, then around 20
mph.
Chc of wetting rain.60 percent.
Transport winds.....West 25 to 30 mph until 1700, then around 20
mph.
Mixing Height.......400-2400 ft agl.
Smoke dispersal.....Poor to fair.
.TONIGHT...
Sky/weather.........Mostly cloudy. Chance of snow in the evening,
then snow after midnight. Snow accumulation of
1 to 5 inches. Chance of snow near 100 percent.
Chance of thunder...0 percent.
Min temperature.....28-33.
24 hr trend......3 degrees warmer.
Max humidity........82-88 percent.
24 hr trend......4 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Southwest winds 10 to 15 mph with gusts to
around 30 mph.
Ridge top winds.....Southwest 15 to 20 mph.
Chc of wetting rain.10 percent until 2400, then 65 percent.
Transport winds.....West 15 to 20 mph until 0400, then southwest
around 25 mph.
Mixing Height.......400-1400 ft agl.
Smoke dispersal.....Poor.
.WEDNESDAY...
Sky/weather.........Cloudy. Snow with rain likely in the morning,
then snow likely and chance of rain in the
afternoon. Snow accumulation up to 4 inches.
Chance of precipitation near 100 percent.
Chance of thunder...0 percent.
Max temperature.....39-44.
24 hr trend......3 degrees warmer.
Min humidity........72-78 percent.
24 hr trend......11 percent wetter.
20-foot winds.......Southwest winds around 15 mph with gusts to
around 35 mph.
Ridge top winds.....Southwest around 20 mph.
Chc of wetting rain.75 percent until 1200, then 40 percent.
Transport winds.....Southwest 25 to 30 mph.
Mixing Height.......800-2000 ft agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.WEDNESDAY NIGHT...Cloudy with chance of rain and snow. Lows in
the upper 20s. Southwest winds around 15 mph.
.THURSDAY...Cloudy with chance of snow and rain. Lows in the
upper 20s. Highs in the mid 30s. Southwest winds around 15 mph.
.FRIDAY...Mostly cloudy with chance of snow and slight chance of
rain. Lows in the mid 20s. Highs in the mid 30s. Southwest winds
around 10 mph.
.SATURDAY...Partly cloudy. Slight chance of snow showers. Lows
around 18. Highs in the mid 30s. Southwest winds around 10 mph.
.SUNDAY...Partly cloudy with slight chance of snow showers. Lows
around 19. Highs in the mid 30s.
.MONDAY...Mostly cloudy with slight chance of snow showers. Highs
in the mid 30s.
$$
WYZ415-092300-
North Zone Bridger Teton NF and Grand Teton NP-
Including the cities of Jackson and Moran
501 AM MST Tue Dec 9 2025
...WINTER STORM WARNING IN EFFECT UNTIL 5 PM MST WEDNESDAY...
.TODAY...
Sky/weather.........Mostly cloudy. Patchy blowing snow. Snow and
rain. Snow accumulation up to 9 inches. Chance
of precipitation near 100 percent.
Chance of thunder...0 percent.
Max temperature.....34-39.
24 hr trend......5 degrees warmer.
Min humidity........76-82 percent.
24 hr trend......4 percent wetter.
20-foot winds.......West winds 15 to 20 mph. Gusts up to 40 mph
until 1500, then 30 mph.
Ridge top winds.....West 20 to 25 mph.
Chc of wetting rain.80 percent.
Transport winds.....West 25 to 30 mph until 1700, then around 20
mph.
Mixing Height.......400-2200 ft agl.
Smoke dispersal.....Poor to fair.
.TONIGHT...
Sky/weather.........Mostly cloudy. Snow through the night. Rain
after midnight. Snow accumulation up to 6
inches. Chance of precipitation near 100
percent.
Chance of thunder...0 percent.
Min temperature.....27-32.
24 hr trend......4 degrees warmer.
Max humidity........88-94 percent.
24 hr trend......1 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......Southwest winds around 15 mph with gusts to
around 30 mph.
Ridge top winds.....Southwest 15 to 20 mph.
Chc of wetting rain.45 percent until 2400, then 80 percent.
Transport winds.....West 15 to 20 mph.
Mixing Height.......400-1600 ft agl.
Smoke dispersal.....Poor.
.WEDNESDAY...
Sky/weather.........Mostly cloudy. Rain in the morning. Snow
through the day. Rain likely in the afternoon.
Snow accumulation up to 5 inches. Chance of
precipitation near 100 percent.
Chance of thunder...0 percent.
Max temperature.....36-41.
24 hr trend......2 degrees warmer.
Min humidity........76-82 percent.
24 hr trend......4 percent wetter.
20-foot winds.......Southwest winds around 15 mph with gusts to
around 30 mph.
Ridge top winds.....Southwest around 20 mph.
Chc of wetting rain.80 percent until 1200, then 45 percent.
Transport winds.....Southwest 20 to 25 mph.
Mixing Height.......600-2000 ft agl.
Smoke dispersal.....Poor.
.Forecast days 3 through 7......
.WEDNESDAY NIGHT...Mostly cloudy with chance of rain and snow.
Lows in the upper 20s. Southwest winds around 15 mph.
.THURSDAY...Mostly cloudy. Chance of snow and rain. Lows in the
upper 20s. Highs in the upper 30s. Southwest winds around 10 mph.
.FRIDAY...Mostly cloudy with chance of snow and slight chance of
rain. Lows in the lower 20s. Highs in the mid 30s. Southwest
winds around 10 mph.
.SATURDAY...Partly cloudy with slight chance of snow showers.
Lows around 18. Highs in the mid 30s. Winds generally less than
10 mph.
.SUNDAY THROUGH MONDAY...Partly cloudy with slight chance of snow
showers. Lows around 19. Highs in the mid 30s.
$$
WYZ416-092300-
West Wind River Mountains/East Zone Bridger Teton NF-
501 AM MST Tue Dec 9 2025
...WINTER WEATHER ADVISORY IN EFFECT UNTIL 5 PM MST WEDNESDAY...
.TODAY...
Sky/weather.........Mostly cloudy. Patchy blowing snow in the
morning. Patchy blowing snow late in the
morning. Snow. Snow accumulation up to 6
inches. Chance of snow near 100 percent.
Chance of thunder...0 percent.
Max temperature.....32-37.
24 hr trend......6 degrees warmer.
Min humidity........72-78 percent.
24 hr trend......8 percent wetter.
20-foot winds.......Breezy. West winds 20 to 25 mph. Gusts up to 45
mph until 1500, then 35 mph.
Ridge top winds.....West 25 to 30 mph.
Chc of wetting rain.40 percent until 1200, then 55 percent.
Transport winds.....West 25 to 30 mph.
Mixing Height.......400-2000 ft agl.
Smoke dispersal.....Poor to fair.
.TONIGHT...
Sky/weather.........Mostly cloudy. Chance of snow in the evening,
then snow after midnight. Snow accumulation up
to 4 inches. Chance of snow 90 percent.
Chance of thunder...0 percent.
Min temperature.....26-31.
24 hr trend......6 degrees warmer.
Max humidity........87-93 percent.
24 hr trend......1 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......West winds 15 to 20 mph with gusts to around 30
mph.
Ridge top winds.....West 20 to 25 mph.
Chc of wetting rain.25 percent until 2400, then 35 percent.
Transport winds.....West 20 to 25 mph.
Mixing Height.......400-1400 ft agl.
Smoke dispersal.....Poor.
.WEDNESDAY...
Sky/weather.........Mostly cloudy. Snow in the morning. Chance of
rain through the day. Chance of snow in the
afternoon. Snow accumulation up to 2 inches.
Chance of precipitation 90 percent.
Chance of thunder...0 percent.
Max temperature.....35-40.
24 hr trend......3 degrees warmer.
Min humidity........74-80 percent.
24 hr trend......3 percent wetter.
20-foot winds.......West winds around 20 mph with gusts to around
40 mph.
Ridge top winds.....West around 25 mph.
Chc of wetting rain.45 percent until 1200, then 10 percent.
Transport winds.....West 25 to 30 mph.
Mixing Height.......600-2000 ft agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.WEDNESDAY NIGHT...Partly cloudy with slight chance of snow. Lows
in the mid 20s. West winds around 20 mph.
.THURSDAY...Partly cloudy with slight chance of snow. Lows in the
mid 20s. Highs in the mid 30s. West winds around 15 mph.
.FRIDAY THROUGH SATURDAY...Partly cloudy. Lows 18 to 23. Highs in
the mid 30s. West winds 10 to 15 mph.
.SUNDAY THROUGH MONDAY...Partly cloudy. Lows around 19. Highs
32 to 37.
$$
WYZ288-092300-
East Wind River Mountains/South Shoshone NF-
Including the cities of Dubois and South Pass
501 AM MST Tue Dec 9 2025
...WINTER WEATHER ADVISORY IN EFFECT UNTIL 5 PM MST WEDNESDAY...
.TODAY...
Sky/weather.........Partly cloudy. Patchy blowing snow. Snow likely
in the morning. Chance of rain through the day.
Chance of snow in the afternoon. Snow
accumulation up to 4 inches. Chance of
precipitation 70 percent.
Chance of thunder...0 percent.
Max temperature.....39-44.
24 hr trend......7 degrees warmer.
Min humidity........60-66 percent.
24 hr trend......9 percent wetter.
20-foot winds.......Windy. West winds 30 to 35 mph. Gusts up to 60
mph until 1500, then 50 mph.
Ridge top winds.....West 35 to 40 mph until 1700, then around 30
mph.
Chc of wetting rain.17 percent.
Transport winds.....West 40 to 45 mph until 1600, then 30 to 35
mph.
Mixing Height.......400-2000 ft agl.
Smoke dispersal.....Poor to fair.
.TONIGHT...
Sky/weather.........Partly cloudy then becoming mostly cloudy.
Chance of snow. Chance of snow 50 percent.
Chance of thunder...0 percent.
Min temperature.....27-32.
24 hr trend......4 degrees warmer.
Max humidity........75-81 percent.
24 hr trend......Unchanged.
Humidity recovery...Excellent.
20-foot winds.......Breezy. West winds 20 to 25 mph. Gusts up to 40
mph until 2400, then 30 mph until 0300, then 40
mph.
Ridge top winds.....West 25 to 30 mph until 2300, then 20 to 25 mph
until 0400, then around 30 mph.
Chc of wetting rain.12 percent.
Transport winds.....West 25 to 30 mph until 2300. Around 30 mph
after 0400.
Mixing Height.......400-1200 ft agl.
Smoke dispersal.....Poor.
.WEDNESDAY...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Chance of snow and rain. Chance of
precipitation 50 percent.
Chance of thunder...0 percent.
Max temperature.....41-46.
24 hr trend......3 degrees warmer.
Min humidity........62-68 percent.
24 hr trend......2 percent wetter.
20-foot winds.......Windy. West winds around 30 mph with gusts to
around 50 mph.
Ridge top winds.....West 30 to 35 mph.
Chc of wetting rain.20 percent until 1200, then 5 percent.
Transport winds.....West 35 to 40 mph until 1100, then 40 to 45 mph
until 1600, then around 35 mph.
Mixing Height.......400-2000 ft agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.WEDNESDAY NIGHT...Breezy. Partly cloudy with slight chance of
snow. Lows in the lower 30s. West winds around 25 mph.
.THURSDAY...Breezy. Partly cloudy with slight chance of snow.
Lows around 30. Highs in the lower 40s. West winds around 25 mph.
.FRIDAY THROUGH SATURDAY...Partly cloudy. Lows in the upper 20s.
Highs around 40. West winds 15 to 20 mph.
.SUNDAY THROUGH MONDAY...Partly cloudy. Lows in the mid 20s.
Highs around 40.
$$
WYZ414-092300-
Salt and Wyoming Ranges/West Zone Bridger Teton NF-
Including the city of Afton
501 AM MST Tue Dec 9 2025
...WINTER WEATHER ADVISORY IN EFFECT UNTIL 5 PM MST WEDNESDAY...
.TODAY...
Sky/weather.........Mostly cloudy. Patchy blowing snow early in the
morning. Patchy blowing snow. Slight chance of
rain in the morning. Snow through the day. Rain
in the afternoon. Snow accumulation up to 7
inches. Chance of precipitation near 100
percent.
Chance of thunder...0 percent.
Max temperature.....33-38.
24 hr trend......4 degrees warmer.
Min humidity........77-83 percent.
24 hr trend......5 percent wetter.
20-foot winds.......Breezy. West winds 20 to 25 mph. Gusts up to 45
mph until 1500, then 35 mph.
Ridge top winds.....West 25 to 30 mph.
Chc of wetting rain.45 percent until 1200, then 75 percent.
Transport winds.....West 25 to 30 mph.
Mixing Height.......400-2000 ft agl.
Smoke dispersal.....Poor to fair.
.TONIGHT...
Sky/weather.........Mostly cloudy. Snow and rain. Snow accumulation
up to 6 inches. Chance of precipitation 90
percent.
Chance of thunder...0 percent.
Min temperature.....29-34.
24 hr trend......5 degrees warmer.
Max humidity........88-94 percent.
24 hr trend......2 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......Breezy. West winds 20 to 25 mph with gusts to
around 40 mph.
Ridge top winds.....West 25 to 30 mph.
Chc of wetting rain.57 percent.
Transport winds.....West 25 to 30 mph.
Mixing Height.......400-1400 ft agl.
Smoke dispersal.....Poor.
.WEDNESDAY...
Sky/weather.........Mostly cloudy. Snow and rain in the morning,
then chance of rain and snow in the afternoon.
Snow accumulation up to 2 inches. Chance of
precipitation 90 percent.
Chance of thunder...0 percent.
Max temperature.....36-41.
24 hr trend......3 degrees warmer.
Min humidity........77-83 percent.
24 hr trend......1 percent wetter.
20-foot winds.......Breezy. West winds 20 to 25 mph with gusts to
around 40 mph.
Ridge top winds.....West 25 to 30 mph.
Chc of wetting rain.50 percent until 1200, then 10 percent.
Transport winds.....West 25 to 30 mph.
Mixing Height.......600-1800 ft agl.
Smoke dispersal.....Poor.
.Forecast days 3 through 7......
.WEDNESDAY NIGHT...Partly cloudy. Slight chance of rain and snow
in the evening, then slight chance of snow after midnight. Lows
in the mid 20s. West winds around 20 mph.
.THURSDAY...Partly cloudy with slight chance of rain and snow.
Lows in the upper 20s. Highs in the upper 30s. West winds around
15 mph.
.FRIDAY THROUGH SATURDAY...Partly cloudy. Lows 19 to 24. Highs in
the upper 30s. Southwest winds around 10 mph.
.SUNDAY THROUGH MONDAY...Partly cloudy with slight chance of snow
showers. Lows in the lower 20s. Highs in the upper 30s.
$$
WYZ278-092300-
Upper Green River Basin/Rock Springs BLM-
Including the cities of Big Piney, Farson, and Pinedale
501 AM MST Tue Dec 9 2025
.TODAY...
Sky/weather.........Partly cloudy. Chance of snow and slight chance
of rain in the morning. Snow likely and chance
of rain in the afternoon. Little or no snow
accumulation. Chance of precipitation 70
percent.
Chance of thunder...0 percent.
Max temperature.....38-43.
24 hr trend......6 degrees warmer.
Min humidity........64-70 percent.
24 hr trend......13 percent wetter.
20-foot winds.......Breezy. West winds 20 to 25 mph. Gusts up to 35
mph until 1200, then 40 mph.
Ridge top winds.....West 25 to 30 mph.
Chc of wetting rain.7 percent.
Transport winds.....West 25 to 30 mph until 1100. Around 25 mph
after 1700.
Mixing Height.......600-2400 ft agl.
Smoke dispersal.....Poor to fair.
.TONIGHT...
Sky/weather.........Partly cloudy then becoming mostly cloudy.
Chance of snow and rain. Chance of
precipitation 50 percent.
Chance of thunder...0 percent.
Min temperature.....31-36.
24 hr trend......8 degrees warmer.
Max humidity........83-89 percent.
24 hr trend......Unchanged.
Humidity recovery...Excellent.
20-foot winds.......West winds 15 to 20 mph with gusts to around 30
mph.
Ridge top winds.....West 20 to 25 mph.
Chc of wetting rain.5 percent.
Transport winds.....West 20 to 25 mph.
Mixing Height.......600-1000 ft agl.
Smoke dispersal.....Poor.
.WEDNESDAY...
Sky/weather.........Mostly cloudy then becoming partly cloudy then
becoming mostly cloudy then becoming partly
cloudy. Chance of rain and snow in the morning.
Slight chance of rain in the afternoon. Chance
of precipitation 50 percent.
Chance of thunder...0 percent.
Max temperature.....42-47.
24 hr trend......4 degrees warmer.
Min humidity........67-73 percent.
24 hr trend......Unchanged.
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 1100, then 25 to 30
mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....West 25 to 30 mph.
Mixing Height.......600-2000 ft agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.WEDNESDAY NIGHT...Partly cloudy. Lows in the upper 20s. West
winds around 15 mph.
.THURSDAY THROUGH SATURDAY...Partly cloudy. Lows 19 to 24. Highs
42 to 47. Northwest winds 10 to 15 mph.
.SUNDAY...Mostly clear. Lows around 20. Highs in the lower 40s.
.MONDAY...Partly cloudy. Highs in the lower 40s.
$$
WYZ277-092300-
Lincoln and Uinta Counties/Lower Elevations-
Including the cities of Evanston, Fort Bridger, and Kemmerer
501 AM MST Tue Dec 9 2025
...HIGH WIND WARNING IN EFFECT UNTIL 5 AM MST THURSDAY...
...WINTER WEATHER ADVISORY IN EFFECT UNTIL 5 PM MST WEDNESDAY...
.TODAY...
Sky/weather.........Partly cloudy. Patchy blowing snow in the
morning. Slight chance of snow early in the
morning. Chance of snow and slight chance of
rain in the late morning and afternoon. Chance
of precipitation 50 percent.
Chance of thunder...0 percent.
Max temperature.....38-43.
24 hr trend......4 degrees warmer.
Min humidity........63-69 percent.
24 hr trend......5 percent wetter.
20-foot winds.......Windy. West winds 25 to 30 mph. Gusts up to 40
mph until 1200, then 45 mph.
Ridge top winds.....West 25 to 30 mph until 1100, then 30 to 35
mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....West 30 to 35 mph until 1200, then 35 to 40 mph
until 1700, then around 30 mph.
Mixing Height.......400-2000 ft agl.
Smoke dispersal.....Poor to fair.
.TONIGHT...
Sky/weather.........Mostly cloudy. Slight chance of rain in the
evening. Chance of snow through the night.
Chance of rain after midnight. Chance of
precipitation 50 percent.
Chance of thunder...0 percent.
Min temperature.....32-37.
24 hr trend......8 degrees warmer.
Max humidity........82-88 percent.
24 hr trend......4 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......Breezy. West winds 20 to 25 mph with gusts to
around 35 mph.
Ridge top winds.....West 25 to 30 mph.
Chc of wetting rain.5 percent.
Transport winds.....West 25 to 30 mph.
Mixing Height.......400-1200 ft agl.
Smoke dispersal.....Poor.
.WEDNESDAY...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Slight chance of snow early in the morning.
Slight chance of rain in the morning. Chance of
precipitation 20 percent.
Chance of thunder...0 percent.
Max temperature.....42-47.
24 hr trend......4 degrees warmer.
Min humidity........64-70 percent.
24 hr trend......1 percent wetter.
20-foot winds.......Breezy. West winds 20 to 25 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.
Mixing Height.......600-1800 ft agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.WEDNESDAY NIGHT...Partly cloudy. Lows in the upper 20s. West
winds around 15 mph.
.THURSDAY THROUGH SATURDAY...Partly cloudy. Lows 22 to 27. Highs
42 to 47. West winds 10 to 15 mph.
.SUNDAY...Mostly clear. Lows in the mid 20s. Highs in the mid
40s.
.MONDAY...Partly cloudy. Highs in the lower 40s.
$$
WYZ279-092300-
Sweetwater County/Rock Springs BLM/Flaming Gorge NRA-
Including the cities of Green River, Rock Springs, and Wamsutter
501 AM MST Tue Dec 9 2025
...HIGH WIND WARNING IN EFFECT UNTIL 5 AM MST THURSDAY...
.TODAY...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Max temperature.....43-48.
24 hr trend......5 degrees warmer.
Min humidity........55-61 percent.
24 hr trend......9 percent wetter.
20-foot winds.......Windy. West winds 25 to 30 mph with gusts to
around 40 mph.
Ridge top winds.....Southwest 25 to 30 mph until 1200, then west 30
to 35 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 30 mph until 1000, then west
40 to 45 mph until 1600, then 30 to 35 mph.
Mixing Height.......600-2600 ft agl until 1200, then 1400-3400 ft
agl.
Smoke dispersal.....Good until 1700, then poor.
.TONIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....36-41.
24 hr trend......6 degrees warmer.
Max humidity........74-80 percent.
24 hr trend......9 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......Breezy. West winds 20 to 25 mph with gusts to
around 35 mph.
Ridge top winds.....West 25 to 30 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 25 to 30 mph.
Mixing Height.......600-1400 ft agl.
Smoke dispersal.....Poor.
.WEDNESDAY...
Sky/weather.........Partly cloudy then becoming mostly cloudy then
becoming partly cloudy.
Chance of thunder...0 percent.
Max temperature.....46-51.
24 hr trend......4 degrees warmer.
Min humidity........58-64 percent.
24 hr trend......4 percent wetter.
20-foot winds.......Windy. West winds 25 to 30 mph with gusts to
around 40 mph.
Ridge top winds.....West 30 to 35 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 30 to 35 mph.
Mixing Height.......600-2600 ft agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.WEDNESDAY NIGHT...Partly cloudy. Lows in the lower 30s. West
winds around 20 mph.
.THURSDAY THROUGH SATURDAY...Partly cloudy. Lows 26 to 31. Highs
47 to 52. Southwest winds 10 to 15 mph.
.SUNDAY THROUGH MONDAY...Partly cloudy. Lows in the upper 20s.
Highs 44 to 49.
$$
WYZ289-092300-
Granite/Green/Ferris/Rattlesnake Mountains-
Including the city of Jeffrey City
501 AM MST Tue Dec 9 2025
...HIGH WIND WARNING IN EFFECT UNTIL 5 AM MST THURSDAY...
.TODAY...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Chance of thunder...0 percent.
Max temperature.....43-48.
24 hr trend......7 degrees warmer.
Min humidity........54-60 percent.
24 hr trend......8 percent wetter.
20-foot winds.......Windy. Southwest winds 30 to 35 mph with gusts
to around 55 mph until 1500, then west around
25 mph with gusts to around 45 mph.
Ridge top winds.....Southwest 35 to 40 mph until 1500, then west
around 30 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 40 to 45 mph until 1600, then around 30
mph.
Mixing Height.......800-2800 ft agl.
Smoke dispersal.....Poor to fair.
.TONIGHT...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Slight chance of snow late in the evening.
Chance of snow 20 percent.
Chance of thunder...0 percent.
Min temperature.....32-37.
24 hr trend......2 degrees warmer.
Max humidity........77-83 percent.
24 hr trend......10 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......West winds around 20 mph with gusts to around
35 mph.
Ridge top winds.....West 25 to 30 mph until 2300, then southwest 20
to 25 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 25 to 30 mph until 2300, then 20 to 25
mph.
Mixing Height.......400-800 ft agl.
Smoke dispersal.....Poor.
.WEDNESDAY...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Max temperature.....46-51.
24 hr trend......3 degrees warmer.
Min humidity........58-64 percent.
24 hr trend......2 percent wetter.
20-foot winds.......Breezy. Southwest winds around 25 mph with
gusts to around 45 mph.
Ridge top winds.....Southwest around 30 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 30 to 35 mph.
Mixing Height.......600-1800 ft agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.WEDNESDAY NIGHT...Breezy. Partly cloudy. Lows in the mid 30s.
Southwest winds around 25 mph.
.THURSDAY THROUGH SATURDAY...Partly cloudy. Lows 27 to 32. Highs
45 to 50. Southwest winds 15 to 20 mph.
.SUNDAY THROUGH MONDAY...Partly cloudy. Lows in the upper 20s.
Highs 44 to 49.
$$
WYZ300-092300-
Casper Mountain-
501 AM MST Tue Dec 9 2025
...HIGH WIND WARNING IN EFFECT UNTIL 5 AM MST THURSDAY...
.TODAY...
Sky/weather.........Mostly cloudy. Patchy blowing snow in the
morning. Chance of snow and rain late in the
afternoon. Chance of precipitation 40 percent.
Chance of thunder...0 percent.
Max temperature.....43-48.
24 hr trend......8 degrees warmer.
Min humidity........55-61 percent.
24 hr trend......4 percent wetter.
20-foot winds.......Windy. Southwest winds 25 to 30 mph. Gusts up
to 50 mph until 1500, then 40 mph.
Ridge top winds.....Southwest 30 to 35 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 35 to 40 mph until 1000. West 30 to
35 mph after 1500.
Mixing Height.......400-2400 ft agl.
Smoke dispersal.....Poor to fair.
.TONIGHT...
Sky/weather.........Mostly cloudy. Slight chance of rain early in
the evening. Chance of snow early in the
evening, then slight chance of snow early in
the evening. Chance of precipitation 30
percent.
Chance of thunder...0 percent.
Min temperature.....29-34.
24 hr trend......1 degree warmer.
Max humidity........77-83 percent.
24 hr trend......10 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......West winds 15 to 20 mph with gusts to around 35
mph until 2400, then southwest 10 to 15 mph
with gusts to around 25 mph.
Ridge top winds.....West 20 to 25 mph until 2200, then 15 to 20
mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....Northwest 20 to 25 mph until 2400, then west 15
to 20 mph.
Mixing Height.......200-1000 ft agl.
Smoke dispersal.....Poor.
.WEDNESDAY...
Sky/weather.........Mostly cloudy then becoming partly cloudy then
becoming mostly cloudy.
Chance of thunder...0 percent.
Max temperature.....45-50.
24 hr trend......3 degrees warmer.
Min humidity........59-65 percent.
24 hr trend......3 percent wetter.
20-foot winds.......Breezy. Southwest winds 20 to 25 mph. Gusts up
to 35 mph until 1500, then 40 mph.
Ridge top winds.....Southwest 20 to 25 mph until 1100, then 25 to
30 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 20 to 25 mph until 0900, then west 30
to 35 mph.
Mixing Height.......200-1800 ft agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.WEDNESDAY NIGHT...Breezy. Mostly cloudy. Lows in the mid 30s.
Southwest winds around 25 mph.
.THURSDAY THROUGH SATURDAY...Partly cloudy. Lows 25 to 30. Highs
41 to 46. Southwest winds 10 to 20 mph.
.SUNDAY THROUGH MONDAY...Partly cloudy. Lows in the upper 20s.
Highs 42 to 47.
$$