Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Riverton, WY
Issued by NWS Riverton, WY
605
FNUS55 KRIW 081202
FWFRIW
Fire Weather Planning Forecast for Western and Central Wyoming
National Weather Service Riverton WY
501 AM MST Mon Dec 8 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---
WYZ280-082300-
Natrona County/Casper BLM-
Including the cities of Casper and Midwest
501 AM MST Mon Dec 8 2025
...HIGH WIND WARNING IN EFFECT FROM 11 PM THIS EVENING TO 5 AM
MST THURSDAY...
.TODAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....41-46.
24 hr trend......5 degrees warmer.
Min humidity........47-53 percent.
24 hr trend......7 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.
Chc of wetting rain.Zero percent.
Transport winds.....West 20 to 25 mph until 1400, then 25 to 30 mph
until 1600, then around 20 mph.
Mixing Height.......400-2400 ft agl until 1200, then 2000-3400 ft
agl until 1600, then 600-1000 ft agl.
Smoke dispersal.....Fair to good until 1600, then poor.
.TONIGHT...
Sky/weather.........Partly cloudy then becoming mostly cloudy.
Chance of thunder...0 percent.
Min temperature.....30-35.
24 hr trend......6 degrees warmer.
Max humidity........64-70 percent.
24 hr trend......13 percent drier.
Humidity recovery...Good.
20-foot winds.......Windy. Southwest winds 20 to 25 mph with gusts
to around 40 mph until 0300, then around 30 mph
with gusts to around 45 mph.
Ridge top winds.....Southwest 25 to 30 mph until 0200, then around
35 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 25 to 30 mph until 0200, then around
35 mph.
Mixing Height.......400-800 ft agl.
Smoke dispersal.....Poor.
.TUESDAY...
Sky/weather.........Mostly cloudy then becoming partly cloudy then
becoming mostly cloudy. Chance of rain and snow
late in the afternoon. Chance of precipitation
40 percent.
Chance of thunder...0 percent.
Max temperature.....46-51.
24 hr trend......6 degrees warmer.
Min humidity........50-56 percent.
24 hr trend......2 percent wetter.
20-foot winds.......Windy. Southwest winds 30 to 35 mph until 1500,
then west around 25 mph. Gusts up to 50 mph
until 1500, then 35 mph.
Ridge top winds.....Southwest 35 to 40 mph until 1600, then west 25
to 30 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 35 to 40 mph until 1600, then
northwest 25 to 30 mph.
Mixing Height.......600-2600 ft agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.TUESDAY NIGHT...Mostly cloudy. Chance of rain and snow in the
evening, then chance of snow and slight chance of rain after
midnight. Lows in the upper 20s. West winds around 10 mph.
.WEDNESDAY...Mostly cloudy with chance of snow and slight chance
of rain. Lows in the mid 30s. Highs in the lower 50s. Southwest
winds around 20 mph.
.THURSDAY...Mostly cloudy with chance of rain and snow. Lows
around 18. Highs in the mid 40s. West winds around 15 mph.
.FRIDAY...Partly cloudy. Lows in the lower 20s. Highs in the
upper 30s. Southwest winds around 10 mph.
.SATURDAY THROUGH SUNDAY...Partly cloudy. Lows in the mid 20s.
Highs 44 to 49.
$$
WYZ283-082300-
Upper Wind River Basin/Wind River Basin-
Including the cities of Crowheart, Lander, Riverton, and Shoshoni
501 AM MST Mon Dec 8 2025
.TODAY...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Max temperature.....39-44.
24 hr trend......3 degrees warmer.
Min humidity........47-53 percent.
24 hr trend......11 percent wetter.
20-foot winds.......West winds 15 to 20 mph. Gusts up to 20 mph
until 1200, then 30 mph.
Ridge top winds.....Southwest 15 to 20 mph until 1200, then west 20
to 25 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 15 to 20 mph until 1200, then 20 to 25
mph.
Mixing Height.......600-2400 ft agl.
Smoke dispersal.....Poor.
.TONIGHT...
Sky/weather.........Partly cloudy then becoming mostly cloudy then
becoming partly cloudy. Slight chance of rain
early in the morning. Chance of rain 20
percent.
Chance of thunder...0 percent.
Min temperature.....30-35.
24 hr trend......6 degrees warmer.
Max humidity........72-78 percent.
24 hr trend......3 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Southwest winds 15 to 20 mph with gusts to
around 30 mph.
Ridge top winds.....Southwest 20 to 25 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 20 to 25 mph.
Mixing Height.......600-800 ft agl.
Smoke dispersal.....Poor.
.TUESDAY...
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.....45-50.
24 hr trend......6 degrees warmer.
Min humidity........52-58 percent.
24 hr trend......4 percent wetter.
20-foot winds.......West winds 15 to 20 mph with gusts to around 35
mph.
Ridge top winds.....Southwest 25 to 30 mph until 1600, then west
around 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 25 to 30 mph until 1300, then west
until 1600, then northwest around 20 mph.
Mixing Height.......600-1800 ft agl.
Smoke dispersal.....Poor.
.Forecast days 3 through 7......
.TUESDAY NIGHT...Mostly cloudy with slight chance of rain and
snow. Lows in the upper 20s. Southwest winds around 10 mph.
.WEDNESDAY...Partly cloudy with chance of rain and slight chance
of snow. Lows in the mid 30s. Highs in the lower 50s. West winds
around 15 mph.
.THURSDAY...Partly cloudy with slight chance of rain and snow.
Lows in the mid 20s. Highs around 50. West winds around 10 mph.
.FRIDAY...Partly cloudy. Lows in the mid 20s. Highs in the lower
40s. West winds around 10 mph.
.SATURDAY THROUGH SUNDAY...Partly cloudy. Lows in the mid 20s.
Highs in the upper 40s.
$$
WYZ285-082300-
South Bighorn Mountains-
501 AM MST Mon Dec 8 2025
.TODAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Patchy blowing snow early in the morning.
Patchy blowing snow early in the morning.
Chance of thunder...0 percent.
Max temperature.....35-40.
24 hr trend......4 degrees warmer.
Min humidity........48-54 percent.
24 hr trend......9 percent wetter.
20-foot winds.......West winds around 15 mph with gusts to around
25 mph.
Ridge top winds.....West around 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 20 to 25 mph.
Mixing Height.......400-2400 ft agl.
Smoke dispersal.....Poor.
.TONIGHT...
Sky/weather.........Partly cloudy then becoming mostly cloudy.
Chance of thunder...0 percent.
Min temperature.....28-33.
24 hr trend......5 degrees warmer.
Max humidity........62-68 percent.
24 hr trend......5 percent drier.
Humidity recovery...Good.
20-foot winds.......Breezy. West winds 15 to 20 mph with gusts to
around 30 mph until 2400, then southwest around
25 mph with gusts to around 40 mph.
Ridge top winds.....West 20 to 25 mph until 2400, then southwest
around 30 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 20 to 25 mph until 2300, then 30 to 35
mph.
Mixing Height.......200-600 ft agl.
Smoke dispersal.....Poor.
.TUESDAY...
Sky/weather.........Mostly cloudy then becoming partly cloudy then
becoming mostly cloudy. Slight chance of snow
late in the morning. Chance of snow and rain
late in the afternoon. Chance of precipitation
50 percent.
Chance of thunder...0 percent.
Max temperature.....40-45.
24 hr trend......5 degrees warmer.
Min humidity........55-61 percent.
24 hr trend......6 percent wetter.
20-foot winds.......Breezy. West winds 20 to 25 mph. Gusts up to 40
mph until 1500, then 30 mph.
Ridge top winds.....West 25 to 30 mph until 1700, then northwest
around 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 30 to 35 mph until 1600, then northwest
around 25 mph.
Mixing Height.......200-1800 ft agl.
Smoke dispersal.....Poor.
.Forecast days 3 through 7......
.TUESDAY NIGHT...Mostly cloudy with chance of snow. Lows in the
upper 20s. West winds around 10 mph.
.WEDNESDAY...Mostly cloudy with chance of rain and snow. Lows in
the lower 30s. Highs in the mid 40s. West winds around 15 mph.
.THURSDAY...Mostly cloudy with chance of snow and rain. Lows
around 20. Highs around 40. West winds around 10 mph.
.FRIDAY...Partly cloudy. Slight chance of snow. Lows in the mid
20s. Highs in the lower 30s. West winds around 10 mph.
.SATURDAY THROUGH SUNDAY...Partly cloudy. Lows in the mid 20s.
Highs 38 to 43.
$$
WYZ281-082300-
Johnson County/Casper BLM-
Including the cities of Buffalo and Kaycee
501 AM MST Mon Dec 8 2025
.TODAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Chance of thunder...0 percent.
Max temperature.....41-46.
24 hr trend......5 degrees warmer.
Min humidity........41-47 percent.
24 hr trend......Unchanged.
20-foot winds.......Southwest winds 10 to 15 mph until 1200, then
northwest until 1500, then southwest. Gusts up
to 20 mph.
Ridge top winds.....Southwest around 15 mph until 1100, then
northwest until 1700, then southwest.
Chc of wetting rain.Zero percent.
Transport winds.....West 15 to 20 mph.
Mixing Height.......400-2200 ft agl until 1200, then 1400-3200 ft
agl until 1600, then 600-1000 ft agl.
Smoke dispersal.....Poor.
.TONIGHT...
Sky/weather.........Partly cloudy then becoming mostly cloudy.
Chance of thunder...0 percent.
Min temperature.....30-35.
24 hr trend......6 degrees warmer.
Max humidity........61-67 percent.
24 hr trend......13 percent drier.
Humidity recovery...Good.
20-foot winds.......Southwest winds 15 to 20 mph with gusts to
around 25 mph.
Ridge top winds.....Southwest 15 to 20 mph until 0200, then around
25 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 15 to 20 mph until 0100, then around
25 mph.
Mixing Height.......400-800 ft agl.
Smoke dispersal.....Poor.
.TUESDAY...
Sky/weather.........Mostly cloudy then becoming partly cloudy then
becoming mostly cloudy. Slight chance of rain
late in the morning. Chance of rain and snow
late in the afternoon. Chance of precipitation
40 percent.
Chance of thunder...0 percent.
Max temperature.....45-50.
24 hr trend......4 degrees warmer.
Min humidity........49-55 percent.
24 hr trend......9 percent wetter.
20-foot winds.......Southwest winds around 20 mph until 1500, then
northwest. Gusts up to 35 mph.
Ridge top winds.....Southwest around 25 mph until 1300. North after
1700.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 25 mph until 1300, then
northwest.
Mixing Height.......1000-3000 ft agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.TUESDAY NIGHT...Mostly cloudy. Chance of snow and rain in the
evening, then chance of snow after midnight. Lows in the upper
20s. West winds around 10 mph.
.WEDNESDAY...Mostly cloudy with chance of rain and snow. Lows in
the upper 20s. Highs in the upper 40s. West winds around 10 mph.
.THURSDAY...Mostly cloudy with chance of rain and snow. Lows
around 11. Highs in the lower 40s. North winds around 10 mph.
.FRIDAY...Colder. Mostly cloudy. Slight chance of snow. Lows
around 14. Highs in the mid 20s. Winds generally less than
10 mph.
.SATURDAY...Not as cool. Partly cloudy. Lows around 20. Highs in
the upper 30s.
.SUNDAY...Not as cool. Partly cloudy. Highs in the upper 40s.
$$
WYZ282-082300-
South Bighorn Basin/Worland BLM-
Including the cities of Ten Sleep, Thermopolis, and Worland
501 AM MST Mon Dec 8 2025
.TODAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Chance of thunder...0 percent.
Max temperature.....37-42.
24 hr trend......3 degrees warmer.
Min humidity........46-52 percent.
24 hr trend......12 percent wetter.
20-foot winds.......South winds around 10 mph until 0900, then
upslope/upvalley 5-9 mph until 1500, then
southeast around 10 mph.
Ridge top winds.....Southeast 10 to 15 mph until 1300, then east
until 1600, then southeast.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 10 to 15 mph.
Mixing Height.......400-2000 ft agl.
Smoke dispersal.....Poor.
.TONIGHT...
Sky/weather.........Partly cloudy then becoming mostly cloudy.
Chance of thunder...0 percent.
Min temperature.....27-32.
24 hr trend......7 degrees warmer.
Max humidity........70-76 percent.
24 hr trend......5 percent drier.
Humidity recovery...Excellent.
20-foot winds.......South winds around 10 mph and gusty.
Ridge top winds.....South around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South 15 to 20 mph.
Mixing Height.......400-800 ft agl.
Smoke dispersal.....Poor.
.TUESDAY...
Sky/weather.........Mostly cloudy. Chance of rain and snow late in
the afternoon. Chance of precipitation 40
percent.
Chance of thunder...0 percent.
Max temperature.....42-47.
24 hr trend......5 degrees warmer.
Min humidity........53-59 percent.
24 hr trend......4 percent wetter.
20-foot winds.......Southwest winds around 10 mph until 1200, then
northwest. Gusts up to 20 mph.
Ridge top winds.....Southwest around 15 mph until 1200. Northwest
after 1600.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 15 mph until 1100, then
northwest until 1600, then around 15 mph.
Mixing Height.......400-1600 ft agl.
Smoke dispersal.....Poor.
.Forecast days 3 through 7......
.TUESDAY NIGHT...Mostly cloudy with chance of rain and snow. Lows
in the upper 20s. Winds generally less than 10 mph.
.WEDNESDAY...Mostly cloudy with chance of rain and snow. Lows in
the lower 30s. Highs in the upper 40s. Southwest winds around
10 mph.
.THURSDAY...Mostly cloudy with chance of rain and snow. Lows
around 20. Highs in the mid 40s. Winds generally less than
10 mph.
.FRIDAY...Colder. Partly cloudy. Slight chance of snow. Lows
around 20. Highs in the lower 30s. Winds generally less than
10 mph.
.SATURDAY...Partly cloudy. Lows in the lower 20s. Highs around
40.
.SUNDAY...Partly cloudy. Highs in the upper 40s.
$$
WYZ275-082300-
North Bighorn Basin/Worland BLM-
Including the cities of Greybull, Lovell, and Powell
501 AM MST Mon Dec 8 2025
.TODAY...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Max temperature.....35-40.
24 hr trend......2 degrees warmer.
Min humidity........50-56 percent.
24 hr trend......4 percent wetter.
20-foot winds.......Southeast winds around 10 mph until 1200, then
south. Gusts up to 15 mph.
Ridge top winds.....South around 15 mph until 1300. Southeast after
1600.
Chc of wetting rain.Zero percent.
Transport winds.....South around 15 mph.
Mixing Height.......400-1800 ft agl.
Smoke dispersal.....Poor.
.TONIGHT...
Sky/weather.........Mostly cloudy.
Chance of thunder...0 percent.
Min temperature.....27-32.
24 hr trend......7 degrees warmer.
Max humidity........70-76 percent.
24 hr trend......7 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Southeast winds 10 to 15 mph and gusty.
Ridge top winds.....Southeast 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southeast 15 to 20 mph.
Mixing Height.......400-800 ft agl.
Smoke dispersal.....Poor.
.TUESDAY...
Sky/weather.........Mostly cloudy. Slight chance of rain late in
the morning. Chance of rain and snow late in
the afternoon. Chance of precipitation 50
percent.
Chance of thunder...0 percent.
Max temperature.....39-44.
24 hr trend......3 degrees warmer.
Min humidity........55-61 percent.
24 hr trend......6 percent wetter.
20-foot winds.......South winds around 10 mph until 1200, then
northwest. Gusts up to 20 mph.
Ridge top winds.....South around 15 mph until 1200. Northwest after
1300.
Chc of wetting rain.Zero percent.
Transport winds.....South around 15 mph until 1100. Northwest after
1300.
Mixing Height.......400-1600 ft agl.
Smoke dispersal.....Poor.
.Forecast days 3 through 7......
.TUESDAY NIGHT...Cloudy. Chance of snow and rain in the evening,
then chance of snow after midnight. Lows around 30. Southwest
winds around 10 mph.
.WEDNESDAY...Mostly cloudy with snow likely and chance of rain.
Lows in the lower 30s. Highs in the mid 40s. South winds around
10 mph.
.THURSDAY...Mostly cloudy with chance of rain and snow. Lows
around 17. Highs in the lower 40s. Northwest winds around 10 mph.
.FRIDAY...Colder. Partly cloudy. Slight chance of snow. Lows
around 19. Highs in the upper 20s. Winds generally less than
10 mph.
.SATURDAY THROUGH SUNDAY...Partly cloudy. Lows around 20. Highs
37 to 42.
$$
WYZ276-082300-
Cody Foothills-
Including the cities of Clark, Cody, and Meeteetse
501 AM MST Mon Dec 8 2025
.TODAY...
Sky/weather.........Partly cloudy then becoming mostly cloudy.
Chance of thunder...0 percent.
Max temperature.....39-44.
24 hr trend......1 degree warmer.
Min humidity........40-46 percent.
24 hr trend......14 percent wetter.
20-foot winds.......Breezy. West winds 20 to 25 mph until 1500,
then southwest around 15 mph. Gusts up to 35
mph until 1500, then 25 mph.
Ridge top winds.....West 25 to 30 mph until 1600, then southwest
around 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 25 to 30 mph until 1600, then around 20
mph.
Mixing Height.......800-2800 ft agl.
Smoke dispersal.....Poor to fair.
.TONIGHT...
Sky/weather.........Mostly cloudy. Slight chance of rain. Slight
chance of snow early in the evening, then
chance of snow early in the morning. Chance of
precipitation 50 percent.
Chance of thunder...0 percent.
Min temperature.....33-38.
24 hr trend......7 degrees warmer.
Max humidity........57-63 percent.
24 hr trend......9 percent drier.
Humidity recovery...Good.
20-foot winds.......Southwest winds 15 to 20 mph with gusts to
around 30 mph.
Ridge top winds.....Southwest 20 to 25 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 20 to 25 mph.
Mixing Height.......600-1400 ft agl.
Smoke dispersal.....Poor.
.TUESDAY...
Sky/weather.........Mostly cloudy then becoming partly cloudy then
becoming mostly cloudy. Chance of rain and snow
through the day. Chance of precipitation 50
percent.
Chance of thunder...0 percent.
Max temperature.....45-50.
24 hr trend......5 degrees warmer.
Min humidity........50-56 percent.
24 hr trend......6 percent wetter.
20-foot winds.......Breezy. West winds 20 to 25 mph until 1500,
then northwest around 15 mph. Gusts up to 35
mph until 1500, then 25 mph.
Ridge top winds.....West 25 to 30 mph until 1500, then northwest 20
to 25 mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....West 25 to 30 mph until 1200. Northwest 20 to
25 mph after 1600.
Mixing Height.......1000-3000 ft agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.TUESDAY NIGHT...Chance of snow and rain in the evening, then
snow and rain likely after midnight. Lows in the lower 30s.
Southwest winds around 10 mph.
.WEDNESDAY...Mostly cloudy with rain likely and slight chance of
snow. Lows in the mid 30s. Highs in the upper 40s. West winds
around 15 mph.
.THURSDAY...Mostly cloudy with chance of rain and snow. Lows in
the lower 20s. Highs in the mid 40s. Northwest winds around
15 mph.
.FRIDAY...Partly cloudy. Slight chance of snow. Lows in the mid
20s. Highs in the mid 30s. West winds around 10 mph.
.SATURDAY THROUGH SUNDAY...Partly cloudy. Lows in the mid 20s.
Highs 42 to 47.
$$
WYZ287-082300-
Owl Creek Mountains-
501 AM MST Mon Dec 8 2025
.TODAY...
Sky/weather.........Partly cloudy then becoming mostly cloudy.
Chance of thunder...0 percent.
Max temperature.....36-41.
24 hr trend......4 degrees warmer.
Min humidity........41-47 percent.
24 hr trend......12 percent wetter.
20-foot winds.......West winds 10 to 15 mph with gusts to around 25
mph.
Ridge top winds.....Southwest 15 to 20 mph until 1400, then west.
Chc of wetting rain.Zero percent.
Transport winds.....West 15 to 20 mph.
Mixing Height.......200-2000 ft agl.
Smoke dispersal.....Poor.
.TONIGHT...
Sky/weather.........Mostly cloudy. 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......5 degrees warmer.
Max humidity........59-65 percent.
24 hr trend......6 percent drier.
Humidity recovery...Good.
20-foot winds.......Southwest winds 15 to 20 mph. Gusts up to 30
mph until 2400, then 35 mph.
Ridge top winds.....Southwest 20 to 25 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 20 to 25 mph.
Mixing Height.......200-800 ft agl.
Smoke dispersal.....Poor.
.TUESDAY...
Sky/weather.........Mostly cloudy then becoming partly cloudy then
becoming mostly cloudy. Slight chance of rain
and snow in the morning. Chance of rain and
snow in the afternoon. Chance of precipitation
40 percent.
Chance of thunder...0 percent.
Max temperature.....41-46.
24 hr trend......5 degrees warmer.
Min humidity........49-55 percent.
24 hr trend......6 percent wetter.
20-foot winds.......West winds around 20 mph with gusts to around
35 mph until 1500, then northwest with gusts to
around 25 mph.
Ridge top winds.....West around 25 mph until 1600, then northwest.
Chc of wetting rain.Zero percent.
Transport winds.....West around 25 mph until 1400. North after
1600.
Mixing Height.......400-2200 ft agl.
Smoke dispersal.....Poor.
.Forecast days 3 through 7......
.TUESDAY NIGHT...Mostly cloudy. Chance of snow and slight chance
of rain in the evening, then chance of snow after midnight. Lows
in the upper 20s. Southwest winds around 10 mph.
.WEDNESDAY...Partly cloudy. Chance of rain and snow. Lows in the
upper 30s. Highs in the upper 40s. West winds around 15 mph.
.THURSDAY...Mostly cloudy with chance of rain and snow. Lows in
the mid 20s. Highs in the mid 40s. Northwest winds around 10 mph.
.FRIDAY...Partly cloudy. Lows in the mid 20s. Highs in the mid
30s. West winds around 10 mph.
.SATURDAY THROUGH SUNDAY...Partly cloudy. Lows in the mid 20s.
Highs 41 to 46.
$$
WYZ286-082300-
Absaroka Mountains/North Shoshone NF-
Including the city of Pahaska
501 AM MST Mon Dec 8 2025
...WINTER STORM WARNING IN EFFECT FROM 5 PM THIS AFTERNOON TO
5 PM MST WEDNESDAY...
.TODAY...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Patchy blowing snow early in the morning.
Patchy blowing snow in the late morning and
early afternoon. Patchy blowing snow early in
the afternoon. Slight chance of snow early in
the morning. Slight chance of snow early in the
afternoon. Chance of snow late in the
afternoon. Chance of snow 50 percent.
Chance of thunder...0 percent.
Max temperature.....31-36.
24 hr trend......3 degrees warmer.
Min humidity........58-64 percent.
24 hr trend......7 percent wetter.
20-foot winds.......Breezy. West winds around 25 mph with gusts to
around 40 mph.
Ridge top winds.....West around 30 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 30 to 35 mph.
Mixing Height.......1000-3000 ft agl.
Smoke dispersal.....Poor to fair.
.TONIGHT...
Sky/weather.........Partly cloudy then becoming mostly cloudy.
Chance of snow through the night. Chance of
snow 50 percent.
Chance of thunder...0 percent.
Min temperature.....26-31.
24 hr trend......4 degrees warmer.
Max humidity........74-80 percent.
24 hr trend......10 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Windy. West winds 30 to 35 mph. Gusts up to 45
mph until 2400, then 50 mph.
Ridge top winds.....West 30 to 35 mph until 0200, then around 40
mph.
Chc of wetting rain.20 percent until 2400, then 30 percent.
Transport winds.....West 30 to 35 mph until 2300, then around 40
mph.
Mixing Height.......400-1800 ft agl.
Smoke dispersal.....Poor.
.TUESDAY...
Sky/weather.........Mostly cloudy. Snow with rain likely. Snow
accumulation up to 5 inches. Chance of
precipitation near 100 percent.
Chance of thunder...0 percent.
Max temperature.....34-39.
24 hr trend......3 degrees warmer.
Min humidity........64-70 percent.
24 hr trend......7 percent wetter.
20-foot winds.......Windy. West winds 30 to 35 mph with gusts to
around 50 mph until 1500, then around 25 mph
with gusts to around 40 mph.
Ridge top winds.....West 35 to 40 mph until 1500, then 25 to 30
mph.
Chc of wetting rain.35 percent until 1200, then 55 percent.
Transport winds.....West 40 to 45 mph until 1600, then 30 to 35
mph.
Mixing Height.......1000-3000 ft agl.
Smoke dispersal.....Fair to good.
.Forecast days 3 through 7......
.TUESDAY NIGHT...Snow likely in the evening, then snow after
midnight. Lows in the upper 20s. West winds around 20 mph.
.WEDNESDAY...Breezy. Snow and rain. Lows in the lower 30s. Highs
in the upper 30s. West winds around 25 mph.
.THURSDAY...Mostly cloudy with chance of snow and rain. Lows in
the upper 20s. Highs in the upper 30s. West winds around 20 mph.
.FRIDAY...Partly cloudy with chance of snow. Lows in the mid 20s.
Highs in the mid 30s. West winds around 15 mph.
.SATURDAY...Mostly clear. Lows in the mid 20s. Highs in the upper
30s.
.SUNDAY...Mostly sunny. Slight chance of snow in the afternoon.
Highs in the upper 30s.
$$
WYZ140-082300-
Yellowstone National Park-
Including the cities of Lake, Mammoth, and Old Faithful
501 AM MST Mon Dec 8 2025
...WINTER STORM WARNING IN EFFECT FROM 5 PM THIS AFTERNOON TO
5 PM MST WEDNESDAY...
.TODAY...
Sky/weather.........Mostly cloudy. Patchy blowing snow early in the
morning. Patchy dense fog early in the morning.
Patchy blowing snow early in the morning.
Chance of snow early in the morning. Slight
chance of snow until late afternoon. Chance of
snow early in the afternoon. Chance of snow 50
percent.
Chance of thunder...0 percent.
Max temperature.....30-35.
24 hr trend......4 degrees warmer.
Min humidity........71-77 percent.
24 hr trend......3 percent wetter.
20-foot winds.......Southwest winds 15 to 20 mph with gusts to
around 30 mph.
Ridge top winds.....Southwest 20 to 25 mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....Southwest 20 to 25 mph.
Mixing Height.......400-2400 ft agl.
Smoke dispersal.....Poor to fair.
.TONIGHT...
Sky/weather.........Cloudy. Chance of snow early in the evening,
then snow early in the evening. Snow
accumulation of 1 to 4 inches. Chance of snow
near 100 percent.
Chance of thunder...0 percent.
Min temperature.....26-31.
24 hr trend......4 degrees warmer.
Max humidity........82-88 percent.
24 hr trend......2 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Southwest winds around 20 mph with gusts to
around 30 mph.
Ridge top winds.....Southwest 20 to 25 mph.
Chc of wetting rain.55 percent until 2400, then 70 percent.
Transport winds.....Southwest 25 to 30 mph.
Mixing Height.......600-1600 ft agl.
Smoke dispersal.....Poor.
.TUESDAY...
Sky/weather.........Cloudy. Snow. Snow accumulation of 1 to 6
inches. Chance of snow near 100 percent.
Chance of thunder...0 percent.
Max temperature.....33-38.
24 hr trend......3 degrees warmer.
Min humidity........74-80 percent.
24 hr trend......4 percent wetter.
20-foot winds.......Southwest winds 15 to 20 mph. Gusts up to 30
mph until 1500, then 20 mph.
Ridge top winds.....Southwest 20 to 25 mph until 1700, then west
around 15 mph.
Chc of wetting rain.85 percent.
Transport winds.....West 30 to 35 mph until 1600, then around 25
mph.
Mixing Height.......1000-2400 ft agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.TUESDAY NIGHT...Snow. Lows in the mid 20s. Southwest winds
around 15 mph.
.WEDNESDAY...Snow and rain. Lows around 30. Highs in the mid 30s.
Southwest winds around 15 mph.
.THURSDAY...Cloudy with snow and rain likely. Lows in the upper
20s. Highs in the mid 30s. Southwest winds around 10 mph.
.FRIDAY...Mostly cloudy. Chance of snow and rain. Lows in the
lower 20s. Highs in the mid 30s. Southwest winds around 10 mph.
.SATURDAY...Partly cloudy. Lows around 19. Highs in the mid 30s.
.SUNDAY...Partly cloudy with slight chance of snow. Highs in the
lower 30s.
$$
WYZ415-082300-
North Zone Bridger Teton NF and Grand Teton NP-
Including the cities of Jackson and Moran
501 AM MST Mon Dec 8 2025
...WINTER STORM WATCH IN EFFECT FROM LATE TONIGHT THROUGH
WEDNESDAY AFTERNOON...
.TODAY...
Sky/weather.........Mostly cloudy. Chance of snow early in the
morning, then slight chance of snow in the
morning. Chance of snow in the afternoon.
Patchy blowing snow late in the morning. Chance
of snow 50 percent.
Chance of thunder...0 percent.
Max temperature.....30-35.
24 hr trend......3 degrees warmer.
Min humidity........75-81 percent.
24 hr trend......3 percent wetter.
20-foot winds.......West winds around 15 mph with gusts to around
25 mph.
Ridge top winds.....West 15 to 20 mph.
Chc of wetting rain.5 percent.
Transport winds.....West 20 to 25 mph until 1700, then southwest
around 15 mph.
Mixing Height.......600-2600 ft agl.
Smoke dispersal.....Poor.
.TONIGHT...
Sky/weather.........Mostly cloudy. Chance of snow early in the
evening, then snow early in the evening. Rain
early in the morning. Snow accumulation of 1 to
3 inches. Chance of precipitation near 100
percent.
Chance of thunder...0 percent.
Min temperature.....23-28.
24 hr trend......3 degrees warmer.
Max humidity........86-92 percent.
24 hr trend......3 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Southwest winds around 15 mph with gusts to
around 25 mph.
Ridge top winds.....Southwest 15 to 20 mph.
Chc of wetting rain.40 percent until 2400, then 65 percent.
Transport winds.....Southwest 20 to 25 mph.
Mixing Height.......600-1400 ft agl.
Smoke dispersal.....Poor.
.TUESDAY...
Sky/weather.........Cloudy. Rain early in the morning. Snow through
the day. Rain early in the morning. Snow
accumulation up to 5 inches. Chance of
precipitation near 100 percent.
Chance of thunder...0 percent.
Max temperature.....31-36.
24 hr trend......3 degrees warmer.
Min humidity........82-88 percent.
24 hr trend......7 percent wetter.
20-foot winds.......Southwest winds 15 to 20 mph with gusts to
around 30 mph.
Ridge top winds.....Southwest 20 to 25 mph.
Chc of wetting rain.85 percent until 1200, then 95 percent.
Transport winds.....West 25 to 30 mph until 1700, then around 20
mph.
Mixing Height.......800-2400 ft agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.TUESDAY NIGHT...Snow and rain. Lows in the upper 20s. Southwest
winds around 15 mph.
.WEDNESDAY...Snow and rain. Lows in the lower 30s. Highs in the
upper 30s. Southwest winds around 15 mph.
.THURSDAY...Mostly cloudy with snow likely and chance of rain.
Lows in the upper 20s. Highs in the upper 30s. Southwest winds
around 10 mph.
.FRIDAY...Partly cloudy with chance of snow and slight chance of
rain. Lows in the lower 20s. Highs in the upper 30s. Winds
generally less than 10 mph.
.SATURDAY...Partly cloudy. Lows around 17. Highs in the upper
30s.
.SUNDAY...Partly cloudy with slight chance of snow. Highs in the
mid 30s.
$$
WYZ416-082300-
West Wind River Mountains/East Zone Bridger Teton NF-
501 AM MST Mon Dec 8 2025
...WINTER STORM WATCH IN EFFECT FROM LATE TONIGHT THROUGH
WEDNESDAY AFTERNOON...
.TODAY...
Sky/weather.........Mostly cloudy then becoming partly cloudy then
becoming mostly cloudy. Slight chance of snow.
Chance of snow late in the afternoon. Patchy
blowing snow in the late morning and early
afternoon. Chance of snow 40 percent.
Chance of thunder...0 percent.
Max temperature.....26-31.
24 hr trend......3 degrees warmer.
Min humidity........71-77 percent.
24 hr trend......10 percent wetter.
20-foot winds.......West winds 15 to 20 mph. Gusts up to 25 mph
until 1200, then 30 mph.
Ridge top winds.....West 20 to 25 mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....West 20 to 25 mph.
Mixing Height.......400-2400 ft agl.
Smoke dispersal.....Poor to fair.
.TONIGHT...
Sky/weather.........Mostly cloudy. Chance of snow through the
night. Chance of snow 50 percent.
Chance of thunder...0 percent.
Min temperature.....19-24.
24 hr trend......3 degrees warmer.
Max humidity........88-94 percent.
24 hr trend......3 percent drier.
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.7 percent.
Transport winds.....West 20 to 25 mph until 0500, then around 30
mph.
Mixing Height.......400-1400 ft agl.
Smoke dispersal.....Poor.
.TUESDAY...
Sky/weather.........Mostly cloudy. Chance of snow in the morning,
then snow late in the morning. Snow
accumulation up to 3 inches. Chance of snow 90
percent.
Chance of thunder...0 percent.
Max temperature.....29-34.
24 hr trend......4 degrees warmer.
Min humidity........78-84 percent.
24 hr trend......7 percent wetter.
20-foot winds.......West winds around 20 mph with gusts to around
35 mph.
Ridge top winds.....West 25 to 30 mph.
Chc of wetting rain.30 percent until 1200, then 55 percent.
Transport winds.....West 30 to 35 mph until 1700, then around 25
mph.
Mixing Height.......600-2200 ft agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.TUESDAY NIGHT...Snow. Lows in the mid 20s. West winds around
15 mph.
.WEDNESDAY...Snow and rain. Lows in the upper 20s. Highs in the
mid 30s. West winds around 20 mph.
.THURSDAY...Partly cloudy. Chance of snow. Lows in the mid 20s.
Highs in the mid 30s. West winds around 15 mph.
.FRIDAY...Partly cloudy with slight chance of snow. Lows around
20. Highs in the mid 30s. West winds around 10 mph.
.SATURDAY THROUGH SUNDAY...Mostly clear. Lows around 18. Highs
33 to 38.
$$
WYZ288-082300-
East Wind River Mountains/South Shoshone NF-
Including the cities of Dubois and South Pass
501 AM MST Mon Dec 8 2025
...WINTER STORM WATCH IN EFFECT FROM LATE TONIGHT THROUGH
WEDNESDAY AFTERNOON...
.TODAY...
Sky/weather.........Partly cloudy. Patchy blowing snow early in the
morning. Patchy blowing snow in the late
morning and early afternoon. Patchy blowing
snow early in the afternoon. Slight chance of
snow early in the morning. Slight chance of
snow early in the afternoon. Chance of snow
late in the afternoon. Chance of snow 50
percent.
Chance of thunder...0 percent.
Max temperature.....31-36.
24 hr trend......3 degrees warmer.
Min humidity........61-67 percent.
24 hr trend......10 percent wetter.
20-foot winds.......Breezy. West winds around 25 mph with gusts to
around 40 mph.
Ridge top winds.....West around 30 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 30 to 35 mph.
Mixing Height.......400-2200 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.....23-28.
24 hr trend......4 degrees warmer.
Max humidity........76-82 percent.
24 hr trend......7 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Windy. West winds 25 to 30 mph with gusts to
around 45 mph.
Ridge top winds.....West 30 to 35 mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....West 30 to 35 mph until 0200, then 35 to 40
mph.
Mixing Height.......400-1200 ft agl.
Smoke dispersal.....Poor.
.TUESDAY...
Sky/weather.........Mostly cloudy. Chance of snow and rain through
the day. Chance of precipitation 50 percent.
Chance of thunder...0 percent.
Max temperature.....35-40.
24 hr trend......5 degrees warmer.
Min humidity........66-72 percent.
24 hr trend......8 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.17 percent.
Transport winds.....West 40 to 45 mph until 1100, then 45 to 50 mph
until 1600, then 30 to 35 mph.
Mixing Height.......400-2200 ft agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.TUESDAY NIGHT...Mostly cloudy with chance of snow. Lows in the
upper 20s. West winds around 20 mph.
.WEDNESDAY...Windy. Snow and chance of rain. Lows in the mid 30s.
Highs in the lower 40s. West winds around 30 mph.
.THURSDAY...Partly cloudy with chance of snow and slight chance
of rain. Lows in the upper 20s. Highs in the lower 40s. West
winds around 20 mph.
.FRIDAY...Partly cloudy with slight chance of snow. Lows in the
upper 20s. Highs around 40. West winds around 15 mph.
.SATURDAY...Partly cloudy. Lows in the mid 20s. Highs in the
lower 40s.
.SUNDAY...Mostly sunny. Highs around 40.
$$
WYZ414-082300-
Salt and Wyoming Ranges/West Zone Bridger Teton NF-
Including the city of Afton
501 AM MST Mon Dec 8 2025
...WINTER STORM WATCH IN EFFECT FROM LATE TONIGHT THROUGH
WEDNESDAY AFTERNOON...
.TODAY...
Sky/weather.........Mostly cloudy. Patchy blowing snow. Chance of
snow early in the morning. Slight chance of
snow late in the morning, then chance of snow
in the afternoon. Chance of snow 50 percent.
Chance of thunder...0 percent.
Max temperature.....28-33.
24 hr trend......2 degrees warmer.
Min humidity........76-82 percent.
24 hr trend......9 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.7 percent.
Transport winds.....West 20 to 25 mph.
Mixing Height.......600-2600 ft agl.
Smoke dispersal.....Poor.
.TONIGHT...
Sky/weather.........Mostly cloudy. Chance of snow in the evening,
then snow likely late in the evening. Snow
accumulation up to 1 inch. Chance of snow 70
percent.
Chance of thunder...0 percent.
Min temperature.....22-27.
24 hr trend......1 degree warmer.
Max humidity........88-94 percent.
24 hr trend......4 percent drier.
Humidity recovery...Excellent.
20-foot winds.......West winds 15 to 20 mph. Gusts up to 25 mph
until 2400, then 30 mph.
Ridge top winds.....West 20 to 25 mph.
Chc of wetting rain.7 percent.
Transport winds.....West 20 to 25 mph until 0300, then around 30
mph.
Mixing Height.......400-1400 ft agl.
Smoke dispersal.....Poor.
.TUESDAY...
Sky/weather.........Mostly cloudy. Snow and rain. Snow accumulation
up to 4 inches. Chance of precipitation 90
percent.
Chance of thunder...0 percent.
Max temperature.....30-35.
24 hr trend......3 degrees warmer.
Min humidity........83-89 percent.
24 hr trend......5 percent wetter.
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.45 percent until 1200, then 80 percent.
Transport winds.....West 25 to 30 mph.
Mixing Height.......600-2200 ft agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.TUESDAY NIGHT...Snow and rain. Lows in the lower 30s. West winds
around 20 mph.
.WEDNESDAY...Mostly cloudy with rain and snow. Lows in the lower
30s. Highs in the upper 30s. West winds around 20 mph.
.THURSDAY...Partly cloudy with chance of rain and snow. Lows in
the upper 20s. Highs in the upper 30s. West winds around 15 mph.
.FRIDAY...Partly cloudy with slight chance of snow. Lows in the
lower 20s. Highs in the upper 30s. Winds generally less than
10 mph.
.SATURDAY...Mostly clear. Lows around 20. Highs in the upper 30s.
.SUNDAY...Mostly sunny. Slight chance of snow in the afternoon.
Highs in the upper 30s.
$$
WYZ278-082300-
Upper Green River Basin/Rock Springs BLM-
Including the cities of Big Piney, Farson, and Pinedale
501 AM MST Mon Dec 8 2025
.TODAY...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Max temperature.....31-36.
24 hr trend......3 degrees warmer.
Min humidity........63-69 percent.
24 hr trend......10 percent wetter.
20-foot winds.......West winds 10 to 15 mph until 1200, then 15 to
20 mph. Gusts up to 25 mph.
Ridge top winds.....West 15 to 20 mph until 1300, then 20 to 25 mph
until 1700, then around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 15 to 20 mph until 1100, then 20 to 25 mph
until 1700, then around 15 mph.
Mixing Height.......1400-3400 ft agl until 1700, then 600-800 ft
agl.
Smoke dispersal.....Poor to fair.
.TONIGHT...
Sky/weather.........Partly cloudy then becoming mostly cloudy.
Slight chance of snow late in the evening.
Chance of snow after midnight. Chance of snow
50 percent.
Chance of thunder...0 percent.
Min temperature.....21-26.
24 hr trend......4 degrees warmer.
Max humidity........88-94 percent.
24 hr trend......4 percent drier.
Humidity recovery...Excellent.
20-foot winds.......West winds 10 to 15 mph with gusts to around 25
mph.
Ridge top winds.....West 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 15 to 20 mph.
Mixing Height.......400-800 ft agl.
Smoke dispersal.....Poor.
.TUESDAY...
Sky/weather.........Mostly cloudy. Chance of snow through the day.
Slight chance of rain late in the morning, then
chance of rain early in the afternoon. Chance
of precipitation 50 percent.
Chance of thunder...0 percent.
Max temperature.....35-40.
24 hr trend......4 degrees warmer.
Min humidity........70-76 percent.
24 hr trend......7 percent wetter.
20-foot winds.......Breezy. West 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.....West 20 to 25 mph until 1200, then 25 to 30
mph.
Chc of wetting rain.Zero percent until 1200, then 10 percent.
Transport winds.....West 20 to 25 mph until 1000, then 30 to 35 mph
until 1700, then around 25 mph.
Mixing Height.......600-2400 ft agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.TUESDAY NIGHT...Mostly cloudy with chance of rain and snow. Lows
in the upper 20s. West winds around 15 mph.
.WEDNESDAY...Mostly cloudy. Chance of rain and slight chance of
snow. Lows in the lower 30s. Highs in the mid 40s. West winds
around 20 mph.
.THURSDAY...Partly cloudy with slight chance of rain and snow.
Lows in the mid 20s. Highs in the mid 40s. West winds around
15 mph.
.FRIDAY...Partly cloudy. Lows in the lower 20s. Highs in the mid
40s. West winds around 10 mph.
.SATURDAY THROUGH SUNDAY...Mostly clear. Lows around 18. Highs in
the mid 40s.
$$
WYZ277-082300-
Lincoln and Uinta Counties/Lower Elevations-
Including the cities of Evanston, Fort Bridger, and Kemmerer
501 AM MST Mon Dec 8 2025
...HIGH WIND WARNING IN EFFECT FROM 11 PM THIS EVENING TO 5 AM
MST THURSDAY...
...WINTER STORM WATCH IN EFFECT FROM LATE TONIGHT THROUGH
WEDNESDAY AFTERNOON...
.TODAY...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Slight chance of snow early in the morning.
Patchy blowing snow in the late morning and
early afternoon. Chance of snow 20 percent.
Chance of thunder...0 percent.
Max temperature.....33-38.
24 hr trend......3 degrees warmer.
Min humidity........69-75 percent.
24 hr trend......13 percent wetter.
20-foot winds.......West winds 15 to 20 mph. Gusts up to 25 mph
until 1200, then 30 mph.
Ridge top winds.....West 20 to 25 mph until 1700, then around 15
mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 20 to 25 mph until 1700, then around 15
mph.
Mixing Height.......1000-3000 ft agl until 1700, then 600-1000 ft
agl.
Smoke dispersal.....Poor to fair.
.TONIGHT...
Sky/weather.........Partly cloudy then becoming mostly cloudy.
Slight chance of snow after midnight. Chance of
snow early in the morning. Chance of snow 50
percent.
Chance of thunder...0 percent.
Min temperature.....23-28.
24 hr trend......Unchanged.
Max humidity........85-91 percent.
24 hr trend......5 percent drier.
Humidity recovery...Excellent.
20-foot winds.......West winds 15 to 20 mph. Gusts up to 25 mph
until 0300, then 30 mph.
Ridge top winds.....West 15 to 20 mph until 0300, then around 25
mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 15 to 20 mph until 0100, then around 25
mph.
Mixing Height.......400-800 ft agl.
Smoke dispersal.....Poor.
.TUESDAY...
Sky/weather.........Mostly cloudy. Chance of snow. Chance of rain
late in the morning. Slight chance of snow late
in the afternoon. Chance of precipitation 50
percent.
Chance of thunder...0 percent.
Max temperature.....36-41.
24 hr trend......3 degrees warmer.
Min humidity........69-75 percent.
24 hr trend......1 percent wetter.
20-foot winds.......Windy. West winds 20 to 25 mph with gusts to
around 35 mph until 1200, then 25 to 30 mph
with gusts to around 45 mph.
Ridge top winds.....West 25 to 30 mph until 1300, then 30 to 35
mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....West 25 to 30 mph until 1000, then 35 to 40 mph
until 1700, then around 30 mph.
Mixing Height.......600-2000 ft agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.TUESDAY NIGHT...Mostly cloudy with chance of rain and slight
chance of snow. Lows in the lower 30s. West winds around 20 mph.
.WEDNESDAY...Partly cloudy. Chance of rain. Lows in the lower
30s. Highs in the mid 40s. West winds around 20 mph.
.THURSDAY THROUGH FRIDAY...Partly cloudy. Lows 24 to 29. Highs in
the mid 40s. West winds 10 to 15 mph.
.SATURDAY THROUGH SUNDAY...Mostly clear. Lows in the lower 20s.
Highs in the mid 40s.
$$
WYZ279-082300-
Sweetwater County/Rock Springs BLM/Flaming Gorge NRA-
Including the cities of Green River, Rock Springs, and Wamsutter
501 AM MST Mon Dec 8 2025
...HIGH WIND WARNING IN EFFECT FROM 11 PM THIS EVENING TO 5 AM
MST THURSDAY...
.TODAY...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Max temperature.....36-41.
24 hr trend......3 degrees warmer.
Min humidity........56-62 percent.
24 hr trend......12 percent wetter.
20-foot winds.......Breezy. West winds 15 to 20 mph with gusts to
around 35 mph until 1200, then 20 to 25 mph
with gusts to around 35 mph.
Ridge top winds.....West 20 to 25 mph until 1100, then 25 to 30 mph
until 1700, then around 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 20 to 25 mph until 1000, then 30 to 35 mph
until 1700, then around 25 mph.
Mixing Height.......400-2200 ft agl until 1100, then 2000-4000 ft
agl until 1700, then 800-1000 ft agl.
Smoke dispersal.....Poor to fair until 1100, then good until 1600,
then poor to fair.
.TONIGHT...
Sky/weather.........Partly cloudy then becoming mostly cloudy.
Chance of thunder...0 percent.
Min temperature.....25-30.
24 hr trend......3 degrees warmer.
Max humidity........75-81 percent.
24 hr trend......9 percent drier.
Humidity recovery...Excellent.
20-foot winds.......West winds around 20 mph with gusts to around
30 mph.
Ridge top winds.....West around 25 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 25 mph.
Mixing Height.......600-1000 ft agl.
Smoke dispersal.....Poor.
.TUESDAY...
Sky/weather.........Mostly cloudy.
Chance of thunder...0 percent.
Max temperature.....40-45.
24 hr trend......4 degrees warmer.
Min humidity........63-69 percent.
24 hr trend......2 percent wetter.
20-foot winds.......Windy. Southwest winds 20 to 25 mph with gusts
to around 35 mph until 1200, then west around
30 mph with gusts to around 50 mph.
Ridge top winds.....Southwest 25 to 30 mph until 1200, then west 35
to 40 mph until 1600, then around 30 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 30 to 35 mph until 1100. Around 30 mph
after 1700.
Mixing Height.......800-2800 ft agl.
Smoke dispersal.....Fair to good.
.Forecast days 3 through 7......
.TUESDAY NIGHT...Mostly cloudy. Lows in the mid 30s. West winds
around 20 mph.
.WEDNESDAY...Breezy. Mostly cloudy. Lows in the mid 30s. Highs in
the upper 40s. West winds around 25 mph.
.THURSDAY THROUGH FRIDAY...Partly cloudy. Lows 27 to 32. Highs
around 50. West winds 10 to 20 mph.
.SATURDAY THROUGH SUNDAY...Mostly clear. Lows in the mid 20s.
Highs in the upper 40s.
$$
WYZ289-082300-
Granite/Green/Ferris/Rattlesnake Mountains-
Including the city of Jeffrey City
501 AM MST Mon Dec 8 2025
...HIGH WIND WARNING IN EFFECT FROM 11 PM THIS EVENING TO 5 AM
MST THURSDAY...
.TODAY...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Max temperature.....35-40.
24 hr trend......4 degrees warmer.
Min humidity........54-60 percent.
24 hr trend......8 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.Zero percent.
Transport winds.....West 25 to 30 mph until 1200, then 30 to 35 mph
until 1700, then around 25 mph.
Mixing Height.......800-2800 ft agl until 1700, then 600-800 ft
agl.
Smoke dispersal.....Poor to fair.
.TONIGHT...
Sky/weather.........Partly cloudy then becoming mostly cloudy.
Chance of thunder...0 percent.
Min temperature.....28-33.
24 hr trend......5 degrees warmer.
Max humidity........75-81 percent.
24 hr trend......10 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Windy. Southwest winds 25 to 30 mph. Gusts up
to 40 mph until 2400, then 45 mph.
Ridge top winds.....Southwest 25 to 30 mph until 0100, then around
35 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 25 to 30 mph until 0100, then southwest
around 35 mph.
Mixing Height.......400-800 ft agl.
Smoke dispersal.....Poor.
.TUESDAY...
Sky/weather.........Mostly cloudy. Slight chance of rain and snow
late in the afternoon. Chance of precipitation
20 percent.
Chance of thunder...0 percent.
Max temperature.....40-45.
24 hr trend......4 degrees warmer.
Min humidity........60-66 percent.
24 hr trend......5 percent wetter.
20-foot winds.......Windy. Southwest winds 30 to 35 mph with gusts
to around 50 mph.
Ridge top winds.....Southwest 35 to 40 mph until 1600, then west
around 30 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 35 to 40 mph until 1400. West 30 to
35 mph after 1600.
Mixing Height.......600-2200 ft agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.TUESDAY NIGHT...Mostly cloudy with slight chance of rain and
snow. Lows around 30. Southwest winds around 20 mph.
.WEDNESDAY...Breezy. Mostly cloudy. Slight chance of rain. Lows
in the mid 30s. Highs in the upper 40s. West winds around 25 mph.
.THURSDAY...Partly cloudy with slight chance of rain and snow.
Lows in the upper 20s. Highs in the upper 40s. West winds around
20 mph.
.FRIDAY...Partly cloudy. Lows in the upper 20s. Highs in the mid
40s. Southwest winds around 15 mph.
.SATURDAY...Partly cloudy. Lows in the upper 20s. Highs in the
mid 40s.
.SUNDAY...Mostly sunny. Highs in the mid 40s.
$$
WYZ300-082300-
Casper Mountain-
501 AM MST Mon Dec 8 2025
...HIGH WIND WARNING IN EFFECT FROM 11 PM THIS EVENING TO 5 AM
MST THURSDAY...
.TODAY...
Sky/weather.........Mostly sunny. Patchy blowing snow in the late
morning and afternoon.
Chance of thunder...0 percent.
Max temperature.....35-40.
24 hr trend......5 degrees warmer.
Min humidity........55-61 percent.
24 hr trend......10 percent wetter.
20-foot winds.......Breezy. Southwest winds 15 to 20 mph with gusts
to around 30 mph until 1200, then west 20 to 25
mph with gusts to around 35 mph.
Ridge top winds.....Southwest 20 to 25 mph until 1300, then west 25
to 30 mph until 1700, then around 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 20 to 25 mph until 1100, then 25 to 30
mph.
Mixing Height.......200-2000 ft agl until 1200, then 2000-3000 ft
agl until 1600, then 400-1000 ft agl.
Smoke dispersal.....Fair to good until 1600, then poor.
.TONIGHT...
Sky/weather.........Partly cloudy then becoming mostly cloudy.
Chance of thunder...0 percent.
Min temperature.....28-33.
24 hr trend......5 degrees warmer.
Max humidity........68-74 percent.
24 hr trend......13 percent drier.
Humidity recovery...Good.
20-foot winds.......Windy. Southwest winds 20 to 25 mph with gusts
to around 35 mph until 2400, then around 30 mph
with gusts to around 45 mph.
Ridge top winds.....Southwest 25 to 30 mph until 0200, then around
35 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 25 to 30 mph until 0100, then around
35 mph.
Mixing Height.......200-600 ft agl.
Smoke dispersal.....Poor.
.TUESDAY...
Sky/weather.........Mostly cloudy. Chance of snow and rain late in
the afternoon. Chance of precipitation 40
percent.
Chance of thunder...0 percent.
Max temperature.....39-44.
24 hr trend......4 degrees warmer.
Min humidity........58-64 percent.
24 hr trend......3 percent wetter.
20-foot winds.......Windy. Southwest winds 25 to 30 mph with gusts
to around 50 mph.
Ridge top winds.....Southwest 30 to 35 mph until 1400. West 25 to
30 mph after 1600.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 35 to 40 mph until 1100. West 30 to
35 mph after 1600.
Mixing Height.......400-2000 ft agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.TUESDAY NIGHT...Cloudy. Chance of snow and rain in the evening,
then chance of snow after midnight. Lows in the upper 20s. West
winds around 15 mph.
.WEDNESDAY...Mostly cloudy with slight chance of rain and snow.
Lows in the lower 30s. Highs in the mid 40s. Southwest winds
around 20 mph.
.THURSDAY...Mostly cloudy with chance of snow and slight chance
of rain. Lows in the lower 20s. Highs around 40. West winds
around 15 mph.
.FRIDAY...Partly cloudy. Lows in the mid 20s. Highs in the mid
30s. Southwest winds around 10 mph.
.SATURDAY...Partly cloudy. Lows in the upper 20s. Highs in the
lower 40s.
.SUNDAY...Mostly sunny. Highs in the lower 40s.
$$