Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Riverton, WY
Issued by NWS Riverton, WY
923
FNUS55 KRIW 110939
FWFRIW
Fire Weather Planning Forecast for Western and Central Wyoming
National Weather Service Riverton WY
339 AM MDT Fri Sep 11 2026
.DISCUSSION...
...Yellowstone NP and Teton dispatch areas (includes fire weather
zones 140...414...415...and 416)...
Virga showers/light rain will be possible this morning, mainly
over zone 415 and northern portions of 414/416. Amounts up to
0.05" will be possible. Clouds will begin to scatter out after
1000, remaining partly cloudy through the rest of the day. West to
southwest winds will begin to increase by this time, with gusts of
30 to 40 mph occurring across the area by 1200. These winds will
begin to decrease after 1800, becoming light (10 mph or less) by
2300.
...Cody dispatch area (includes fire weather zones 275...276...
282...283...285...286...287...288...and 289)...
West to southwest winds will increase over zones 286/287/288
after sunrise this morning, with gusts up to 40 mph expected
after 0900. Gusts up to 35 mph will occur in zones 285/289 by
1200; Gusts around 25 mph will occur in zones 282/283 by this time
as well. A cold front will enter northern portions of the Bighorn
Basin by 1500 quickly progressing southward through the afternoon
and reaching the Wind River Basin by 1800. Northerly wind gusts up
to 30 mph will occur behind the front. Winds will be decrease
elsewhere across the area after 1800.
...Casper dispatch area (includes fire weather zones 277...278...
279...280...281...285...289...and 300)...
Virga showers will be possible over zone 278 this morning,
Clouds will begin to scatter out after 1000, remaining partly
cloudy through the rest of the day. West winds will increase over
zones 280/289/300 after sunrise, with gusts up to 30 mph occurring
by 0900. These winds will continue to increase, with gusts up to
35 mph across all areas, except northern portions of 281 by 1200.
A cold front will progress southward over zone 281 into 280
between 1500 and 1900, with gusts up to 30 mph occurring behind
the front. Winds will decrease elsewhere after 1800.
...Thunderstorms imply strong gusty and erratic winds...
WYZ280-121145-
Natrona County/Casper BLM-
Including the cities of Casper and Midwest
339 AM MDT Fri Sep 11 2026
.TODAY...
Sky/weather.........Partly cloudy. Slight chance of showers late in
the morning. Slight chance of showers and
thunderstorms late in the afternoon. Chance of
precipitation 20 percent.
Chance of thunder...10 percent.
Max temperature.....76-81.
24 hr trend......4 degrees cooler.
Min humidity........18-24 percent.
24 hr trend......10 percent wetter.
20-foot winds.......West winds 15 to 20 mph with gusts to around 35
mph.
Ridge top winds.....West 20 to 25 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 20 mph until 1200, then around 30
mph.
Mixing Height.......2600-4600 ft agl until 1200, then 8000-10000 ft
agl.
Smoke dispersal.....Good until 1200, then excellent.
.TONIGHT...
Sky/weather.........Partly cloudy. Slight chance of thunderstorms
early in the evening. Slight chance of showers
early in the evening. Chance of precipitation
20 percent.
Chance of thunder...10 percent.
Min temperature.....44-49.
24 hr trend......12 degrees cooler.
Max humidity........79-85 percent.
24 hr trend......47 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......Northwest winds around 15 mph until 2100, then
northeast. Gusts up to 30 mph.
Ridge top winds.....North 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....North 15 to 20 mph.
Mixing Height.......2800-4800 ft agl until 2400, then 600-1800 ft
agl.
Smoke dispersal.....Good until 2400, then poor.
.SATURDAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Chance of thunder...0 percent.
Max temperature.....75-80.
24 hr trend......2 degrees cooler.
Min humidity........23-29 percent.
24 hr trend......5 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200. Winds east
around 10 mph after 1500. Gusts up to 25 mph.
Ridge top winds.....East around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....East around 10 mph until 1200, then southwest.
Mixing Height.......600-2400 ft agl until 1200, then 3800-5800 ft
agl.
Smoke dispersal.....Poor until 1200, then fair to good.
.Forecast days 3 through 7......
.SATURDAY NIGHT...Partly cloudy. Lows in the lower 50s. Northeast
winds around 10 mph.
.SUNDAY...Partly cloudy with chance of showers and slight chance
of thunderstorms. Lows in the upper 40s. Highs in the lower 80s.
Southwest winds around 15 mph.
.MONDAY...Not as warm. Clear. Lows around 40. Highs around 70.
North winds around 15 mph.
.TUESDAY...Partly cloudy. Slight chance of showers and
thunderstorms. Lows in the upper 40s. Highs in the lower 70s.
East winds around 10 mph.
.WEDNESDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the mid 40s. Highs in the mid 70s.
.THURSDAY...Mostly sunny. Slight chance of showers in the
afternoon. Highs in the mid 70s.
$$
WYZ283-121145-
Upper Wind River Basin/Wind River Basin-
Including the cities of Crowheart, Lander, Riverton, and Shoshoni
339 AM MDT Fri Sep 11 2026
.TODAY...
Sky/weather.........Partly cloudy. Slight chance of showers in the
morning. Chance of showers 20 percent.
Chance of thunder...0 percent.
Max temperature.....75-80.
24 hr trend......4 degrees cooler.
Min humidity........18-24 percent.
24 hr trend......8 percent wetter.
20-foot winds.......West winds 10 to 15 mph until 1500, then around
20 mph. Gusts up to 30 mph.
Ridge top winds.....West 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 15 mph until 1200, then around 25
mph.
Mixing Height.......2000-4000 ft agl until 1200, then 8000-10000 ft
agl.
Smoke dispersal.....Fair to good until 1200, then excellent.
.TONIGHT...
Sky/weather.........Partly cloudy. Patchy smoke early in the
morning.
Chance of thunder...0 percent.
Min temperature.....43-48.
24 hr trend......12 degrees cooler.
Max humidity........76-82 percent.
24 hr trend......37 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......Northwest winds around 15 mph until 2100. East
after 2400. Gusts up to 30 mph.
Ridge top winds.....Northwest around 15 mph until 2400, then east.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 15 mph until 2400, then east.
Mixing Height.......3400-5400 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Good until 2400, then poor.
.SATURDAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Chance of thunder...0 percent.
Max temperature.....74-79.
24 hr trend......1 degree cooler.
Min humidity........25-31 percent.
24 hr trend......4 percent wetter.
20-foot winds.......Northeast winds around 10 mph until 0900, then
upslope/upvalley 5-9 mph. Gusts up to 25 mph.
Ridge top winds.....East around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southeast around 10 mph until 1200, then
southwest.
Mixing Height.......400-2400 ft agl until 1200, then 3800-5800 ft
agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.SATURDAY NIGHT...Partly cloudy. Lows in the lower 50s. Northeast
winds around 10 mph.
.SUNDAY...Mostly clear. Lows in the mid 40s. Highs in the upper
70s. West winds around 15 mph.
.MONDAY...Cooler, clear. Lows in the lower 40s. Highs in the
upper 60s. North winds around 10 mph.
.TUESDAY...Mostly clear. Lows in the mid 40s. Highs in the lower
70s. Winds generally less than 10 mph.
.WEDNESDAY THROUGH THURSDAY...Mostly clear. Lows in the mid 40s.
Highs in the mid 70s.
$$
WYZ285-121145-
South Bighorn Mountains-
339 AM MDT Fri Sep 11 2026
.TODAY...
Sky/weather.........Partly cloudy. Chance of showers early in the
morning. Slight chance of showers. Slight
chance of thunderstorms late in the afternoon.
Chance of precipitation 50 percent.
Chance of thunder...10 percent.
Max temperature.....70-75.
24 hr trend......4 degrees cooler.
Min humidity........23-29 percent.
24 hr trend......12 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.
Mixing Height.......2400-4400 ft agl until 1200, then 7000-9000 ft
agl.
Smoke dispersal.....Fair to good until 1200, then excellent.
.TONIGHT...
Sky/weather.........Partly cloudy. Slight chance of thunderstorms
early in the evening. Slight chance of showers
early in the evening. Chance of precipitation
20 percent.
Chance of thunder...10 percent.
Min temperature.....41-46.
24 hr trend......13 degrees cooler.
Max humidity........78-84 percent.
24 hr trend......43 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......Northwest winds around 15 mph with gusts to
around 30 mph until 2100, then northeast with
gusts to around 30 mph until 0300, then
downslope/downvalley 4-7 mph.
Ridge top winds.....North around 20 mph until 2400, then east
around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....North around 20 mph until 2400, then east
around 10 mph.
Mixing Height.......2800-4800 ft agl until 2400, then 600-800 ft
agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.SATURDAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Chance of thunder...0 percent.
Max temperature.....67-72.
24 hr trend......2 degrees cooler.
Min humidity........28-34 percent.
24 hr trend......5 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then south
around 10 mph. Gusts up to 20 mph.
Ridge top winds.....Southeast around 10 mph until 1200, then south.
Chc of wetting rain.Zero percent.
Transport winds.....South around 10 mph until 1200, then southwest.
Mixing Height.......600-2600 ft agl until 1200, then 3800-5800 ft
agl.
Smoke dispersal.....Poor until 1200, then fair to good.
.Forecast days 3 through 7......
.SATURDAY NIGHT...Partly cloudy. Lows in the upper 40s. Northeast
winds around 10 mph.
.SUNDAY...Partly cloudy with slight chance of showers,
thunderstorms and snow showers. Lows in the mid 40s. Highs in the
lower 70s. Southwest winds around 15 mph.
.MONDAY...Cooler, clear. Lows in the upper 30s. Highs in the
lower 60s. North winds around 10 mph.
.TUESDAY...Mostly clear. Lows in the mid 40s. Highs in the mid
60s. Southeast winds around 10 mph.
.WEDNESDAY...Mostly clear. Slight chance of showers. Lows in the
lower 40s. Highs in the upper 60s.
.THURSDAY...Mostly sunny. Highs in the upper 60s.
$$
WYZ281-121145-
Johnson County/Casper BLM-
Including the cities of Buffalo and Kaycee
339 AM MDT Fri Sep 11 2026
.TODAY...
Sky/weather.........Partly cloudy. Slight chance of showers early
in the afternoon. Slight chance of
thunderstorms late in the afternoon. Chance of
precipitation 20 percent.
Chance of thunder...10 percent.
Max temperature.....73-78.
24 hr trend......7 degrees cooler.
Min humidity........22-28 percent.
24 hr trend......11 percent wetter.
20-foot winds.......Northwest winds 10 to 15 mph with gusts to
around 30 mph.
Ridge top winds.....Northwest 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 15 to 20 mph.
Mixing Height.......2000-4000 ft agl until 1200, then 7400-9400 ft
agl.
Smoke dispersal.....Fair to good until 1200, then very good to
excellent.
.TONIGHT...
Sky/weather.........Partly cloudy. Slight chance of showers early
in the evening. Slight chance of thunderstorms
early in the evening. Chance of precipitation
20 percent.
Chance of thunder...10 percent.
Min temperature.....43-48.
24 hr trend......12 degrees cooler.
Max humidity........86-92 percent.
24 hr trend......47 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......North winds 15 to 20 mph with gusts to around
30 mph until 2400, then downslope/downvalley
4-7 mph.
Ridge top winds.....North around 20 mph until 2400, then northeast
around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....North around 20 mph until 2400, then around 10
mph.
Mixing Height.......2200-4200 ft agl until 2400, then 600-1400 ft
agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.SATURDAY...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Max temperature.....67-72.
24 hr trend......6 degrees cooler.
Min humidity........34-40 percent.
24 hr trend......11 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then east
around 10 mph. Gusts up to 20 mph.
Ridge top winds.....East 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southeast around 10 mph until 1200, then south.
Mixing Height.......1000-3000 ft agl until 1200, then 3400-4800 ft
agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.SATURDAY NIGHT...Partly cloudy. Slight chance of showers and
thunderstorms after midnight. Lows in the upper 40s. North winds
around 10 mph.
.SUNDAY...Partly cloudy with chance of showers and slight chance
of thunderstorms. Lows in the upper 40s. Highs in the upper 70s.
South winds around 10 mph.
.MONDAY...Cooler, clear. Lows in the lower 40s. Highs in the
upper 60s. North winds around 10 mph.
.TUESDAY...Mostly clear. Lows in the upper 40s. Highs in the
lower 70s. Southeast winds around 10 mph.
.WEDNESDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the mid 40s. Highs in the mid 70s.
.THURSDAY...Mostly sunny. Highs in the mid 70s.
$$
WYZ282-121145-
South Bighorn Basin/Worland BLM-
Including the cities of Ten Sleep, Thermopolis, and Worland
339 AM MDT Fri Sep 11 2026
.TODAY...
Sky/weather.........Partly cloudy. Chance of showers in the
morning. Slight chance of showers in the
afternoon. Chance of showers 40 percent.
Chance of thunder...0 percent.
Max temperature.....73-78.
24 hr trend......4 degrees cooler.
Min humidity........19-25 percent.
24 hr trend......9 percent wetter.
20-foot winds.......West winds 10 to 15 mph with gusts to around 30
mph.
Ridge top winds.....West 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 15 mph until 1200, then west
around 25 mph.
Mixing Height.......2400-4400 ft agl until 1200, then 8600-10600 ft
agl.
Smoke dispersal.....Fair to good until 1200, then excellent.
.TONIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....41-46.
24 hr trend......14 degrees cooler.
Max humidity........80-86 percent.
24 hr trend......45 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......Northwest winds 10 to 15 mph with gusts to
around 30 mph until 2400, then
downslope/downvalley 4-7 mph.
Ridge top winds.....Northwest around 20 mph until 2400, then around
10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 20 mph until 2400, then around
10 mph.
Mixing Height.......3000-5000 ft agl until 2400, then 600-800 ft
agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.SATURDAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Chance of thunder...0 percent.
Max temperature.....69-74.
24 hr trend......7 degrees cooler.
Min humidity........28-34 percent.
24 hr trend......13 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1500, then north
around 10 mph. Gusts up to 15 mph.
Ridge top winds.....North around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 10 mph.
Mixing Height.......800-2800 ft agl until 1200, then 2800-3800 ft
agl.
Smoke dispersal.....Poor.
.Forecast days 3 through 7......
.SATURDAY NIGHT...Partly cloudy. Slight chance of showers after
midnight. Lows in the upper 40s. North winds around 10 mph.
.SUNDAY...Mostly clear. Lows in the upper 40s. Highs in the upper
70s. Northwest winds around 10 mph.
.MONDAY...Cooler, clear. Lows in the lower 40s. Highs in the
upper 60s. North winds around 10 mph.
.TUESDAY...Mostly clear. Lows in the upper 40s. Highs in the
lower 70s. Winds generally less than 10 mph.
.WEDNESDAY THROUGH THURSDAY...Mostly clear. Lows in the mid 40s.
Highs 73 to 78.
$$
WYZ275-121145-
North Bighorn Basin/Worland BLM-
Including the cities of Greybull, Lovell, and Powell
339 AM MDT Fri Sep 11 2026
.TODAY...
Sky/weather.........Partly cloudy. Slight chance of showers late in
the afternoon. Chance of showers 20 percent.
Chance of thunder...0 percent.
Max temperature.....69-74.
24 hr trend......8 degrees cooler.
Min humidity........24-30 percent.
24 hr trend......11 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then west
around 10 mph with gusts to around 30 mph until
1500, then northwest around 20 mph with gusts
to around 30 mph.
Ridge top winds.....Southwest around 10 mph until 1200, then
northwest around 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 10 mph until 1200, then west
around 20 mph.
Mixing Height.......1800-3800 ft agl until 1200, then 6000-8000 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good.
.TONIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....40-45.
24 hr trend......11 degrees cooler.
Max humidity........85-91 percent.
24 hr trend......47 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......Northwest winds 15 to 20 mph with gusts to
around 35 mph until 2400, then west around 10
mph with gusts to around 25 mph.
Ridge top winds.....Northwest 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest 15 to 20 mph.
Mixing Height.......1400-3400 ft agl until 2400, then 600-800 ft
agl.
Smoke dispersal.....Poor.
.SATURDAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Chance of thunder...0 percent.
Max temperature.....64-69.
24 hr trend......7 degrees cooler.
Min humidity........32-38 percent.
24 hr trend......11 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph. Gusts up to 20 mph.
Ridge top winds.....West around 10 mph until 1200, then north.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 10 mph until 1200, then
southeast.
Mixing Height.......600-2600 ft agl until 1200, then 3000-3800 ft
agl.
Smoke dispersal.....Poor.
.Forecast days 3 through 7......
.SATURDAY NIGHT...Partly cloudy. Chance of showers after
midnight. Lows in the mid 40s. Northwest winds around 10 mph.
.SUNDAY...Partly cloudy. Lows in the mid 40s. Highs in the mid
70s. West winds around 10 mph.
.MONDAY...Clear. Lows in the lower 40s. Highs in the upper 60s.
Northwest winds around 10 mph.
.TUESDAY...Mostly clear. Lows in the mid 40s. Highs around 70.
Winds generally less than 10 mph.
.WEDNESDAY THROUGH THURSDAY...Mostly clear. Lows in the mid 40s.
Highs 71 to 76.
$$
WYZ276-121145-
Cody Foothills-
Including the cities of Clark, Cody, and Meeteetse
339 AM MDT Fri Sep 11 2026
.TODAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Slight chance of showers early in the morning.
Slight chance of thunderstorms late in the
afternoon. Chance of precipitation 20 percent.
Chance of thunder...10 percent.
Max temperature.....70-75.
24 hr trend......9 degrees cooler.
Min humidity........25-31 percent.
24 hr trend......13 percent wetter.
20-foot winds.......West winds 10 to 15 mph until 1200, then
northwest around 20 mph. Gusts up to 30 mph.
Ridge top winds.....West 20 to 25 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 20 mph until 1200, then northwest
around 30 mph.
Mixing Height.......3000-5000 ft agl until 1200, then 5800-7800 ft
agl.
Smoke dispersal.....Good until 1200, then excellent.
.TONIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....41-46.
24 hr trend......13 degrees cooler.
Max humidity........80-86 percent.
24 hr trend......38 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......North winds 15 to 20 mph until 2400.
Downslope/downvalley 4-7 mph after 0300. Gusts
up to 30 mph.
Ridge top winds.....North around 20 mph until 2400, then northwest
around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....North 15 to 20 mph.
Mixing Height.......1800-3800 ft agl until 2400, then 600-1000 ft
agl.
Smoke dispersal.....Poor to fair.
.SATURDAY...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Max temperature.....64-69.
24 hr trend......7 degrees cooler.
Min humidity........40-46 percent.
24 hr trend......17 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
northeast around 10 mph. Gusts up to 20 mph.
Ridge top winds.....Northeast 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....North around 10 mph until 1200, then east.
Mixing Height.......600-2600 ft agl until 1200, then 2600-4200 ft
agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.SATURDAY NIGHT...Partly cloudy. Chance of showers after
midnight. Lows in the mid 40s. Winds generally less than 10 mph.
.SUNDAY...Mostly clear. Lows in the mid 40s. Highs around 70.
Southwest winds around 10 mph.
.MONDAY THROUGH TUESDAY...Mostly clear. Lows 41 to 46. Highs
62 to 67. Northeast winds around 10 mph.
.WEDNESDAY...Mostly clear. Lows in the mid 40s. Highs in the mid
60s.
.THURSDAY...Mostly sunny. Slight chance of showers in the
afternoon. Highs in the lower 70s.
$$
WYZ287-121145-
Owl Creek Mountains-
339 AM MDT Fri Sep 11 2026
.TODAY...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Slight chance of showers early in the morning,
then chance of showers early in the morning.
Slight chance of showers late in the morning.
Chance of showers 40 percent.
Chance of thunder...0 percent.
Max temperature.....70-75.
24 hr trend......5 degrees cooler.
Min humidity........19-25 percent.
24 hr trend......9 percent wetter.
20-foot winds.......West winds around 20 mph with gusts to around
35 mph.
Ridge top winds.....West around 25 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 25 mph.
Mixing Height.......2200-4200 ft agl until 1200, then 8000-10000 ft
agl.
Smoke dispersal.....Fair to good until 1200, then excellent.
.TONIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....40-45.
24 hr trend......15 degrees cooler.
Max humidity........75-81 percent.
24 hr trend......35 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......Northwest winds 10 to 15 mph with gusts to
around 30 mph until 2400, then
downslope/downvalley 4-7 mph.
Ridge top winds.....Northwest around 20 mph until 2400, then north
around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 20 mph until 2400, then north
around 10 mph.
Mixing Height.......3400-5400 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Good until 2400, then poor.
.SATURDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....67-72.
24 hr trend......5 degrees cooler.
Min humidity........32-38 percent.
24 hr trend......12 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then east
around 10 mph. Gusts up to 20 mph.
Ridge top winds.....Southeast 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South 10 to 15 mph.
Mixing Height.......400-2200 ft agl until 1200, then 2600-4600 ft
agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.SATURDAY NIGHT...Partly cloudy. Slight chance of showers after
midnight. Lows in the upper 40s. Winds generally less than
10 mph.
.SUNDAY...Mostly clear. Lows in the mid 40s. Highs in the lower
70s. Southwest winds around 15 mph.
.MONDAY...Cooler, clear. Lows in the lower 40s. Highs in the
lower 60s. North winds around 10 mph.
.TUESDAY...Mostly clear. Lows in the mid 40s. Highs in the mid
60s. Winds generally less than 10 mph.
.WEDNESDAY THROUGH THURSDAY...Mostly clear. Lows in the mid 40s.
Highs 66 to 71.
$$
WYZ286-121145-
Absaroka Mountains/North Shoshone NF-
Including the city of Pahaska
339 AM MDT Fri Sep 11 2026
.TODAY...
Sky/weather.........Partly cloudy. Chance of showers early in the
morning. Slight chance of showers early in the
morning. Slight chance of thunderstorms in the
afternoon. Chance of precipitation 50 percent.
Chance of thunder...10 percent.
Max temperature.....62-67.
24 hr trend......6 degrees cooler.
Min humidity........27-33 percent.
24 hr trend......10 percent wetter.
20-foot winds.......Breezy. West winds 15 to 20 mph until 1200,
then 20 to 25 mph. Gusts up to 40 mph.
Ridge top winds.....West 20 to 25 mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....West around 25 mph until 1200, then around 35
mph.
Mixing Height.......2200-4200 ft agl until 1200, then 6600-8600 ft
agl.
Smoke dispersal.....Good until 1200, then excellent.
.TONIGHT...
Sky/weather.........Partly cloudy. Slight chance of showers early
in the evening. Chance of showers 20 percent.
Chance of thunder...0 percent.
Min temperature.....37-42.
24 hr trend......7 degrees cooler.
Max humidity........74-80 percent.
24 hr trend......8 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......West winds around 15 mph with gusts to around
35 mph until 2100, then downslope/downvalley
4-7 mph.
Ridge top winds.....West around 15 mph until 2400, then south.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 10 to 15 mph.
Mixing Height.......3000-5000 ft agl until 2400, then 600 ft agl.
Smoke dispersal.....Good until 2400, then poor.
.SATURDAY...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Max temperature.....58-63.
24 hr trend......1 degree cooler.
Min humidity........39-45 percent.
24 hr trend......4 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then
southwest 10 to 15 mph. Gusts up to 35 mph.
Ridge top winds.....Southwest around 10 mph until 1200, then around
20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 15 mph until 1200, then around
25 mph.
Mixing Height.......2000-4000 ft agl until 1200, then 6000-8000 ft
agl.
Smoke dispersal.....Fair to good until 1200, then very good to
excellent.
.Forecast days 3 through 7......
.SATURDAY NIGHT...Partly cloudy. Chance of showers and slight
chance of thunderstorms after midnight. Lows in the mid 40s.
Winds generally less than 10 mph.
.SUNDAY...Mostly clear. Chance of snow showers, slight chance of
showers and thunderstorms. Lows in the mid 30s. Highs in the
upper 50s. Southwest winds around 15 mph.
.MONDAY THROUGH TUESDAY...Mostly clear. Lows 34 to 39. Highs
53 to 58. Southwest winds around 10 mph.
.WEDNESDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the upper 30s. Highs in the upper 50s.
.THURSDAY...Mostly sunny. Slight chance of showers in the
afternoon. Highs in the lower 60s.
$$
WYZ140-121145-
Yellowstone National Park-
Including the cities of Lake, Mammoth, and Old Faithful
339 AM MDT Fri Sep 11 2026
.TODAY...
Sky/weather.........Partly cloudy. Slight chance of showers through
the day. Slight chance of thunderstorms in the
afternoon. Chance of precipitation 20 percent.
Chance of thunder...20 percent.
Max temperature.....64-69.
24 hr trend......3 degrees cooler.
Min humidity........26-32 percent.
24 hr trend......8 percent wetter.
20-foot winds.......Southwest winds 10 to 15 mph until 1200, then
west around 20 mph. Gusts up to 35 mph.
Ridge top winds.....Southwest 20 to 25 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 20 mph until 1200, then west
around 30 mph.
Mixing Height.......2000-4000 ft agl until 1200, then 6800-8800 ft
agl.
Smoke dispersal.....Fair to good until 1200, then excellent.
.TONIGHT...
Sky/weather.........Partly cloudy. Chance of showers early in the
evening. Slight chance of thunderstorms early
in the evening. Slight chance of showers early
in the evening. Chance of precipitation 50
percent.
Chance of thunder...10 percent.
Min temperature.....34-39.
24 hr trend......5 degrees cooler.
Max humidity........76-82 percent.
24 hr trend......2 percent drier.
Humidity recovery...Excellent.
20-foot winds.......West winds around 15 mph with gusts to around
30 mph until 2100, then downslope/downvalley
4-7 mph.
Ridge top winds.....West around 15 mph until 2400, then southeast.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 10 to 15 mph.
Mixing Height.......3200-5200 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Good to very good until 2400, then poor.
.SATURDAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Chance of thunder...0 percent.
Max temperature.....64-69.
24 hr trend......1 degree warmer.
Min humidity........28-34 percent.
24 hr trend......Unchanged.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
southwest 10 to 15 mph with gusts to around 35
mph.
Ridge top winds.....South around 10 mph until 1200, then southwest
around 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 15 mph until 1200, then around
25 mph.
Mixing Height.......2200-4200 ft agl until 1200, then 7000-8800 ft
agl.
Smoke dispersal.....Fair to good until 1200, then excellent.
.Forecast days 3 through 7......
.SATURDAY NIGHT...Mostly cloudy. Chance of showers and slight
chance of thunderstorms after midnight. Lows in the lower 40s.
Winds generally less than 10 mph.
.SUNDAY...Cooler. Partly cloudy with slight chance of showers,
thunderstorms and snow showers. Lows in the lower 30s. Highs in
the mid 50s. Southwest winds around 15 mph.
.MONDAY...Mostly clear. Lows around 30. Highs in the lower 50s.
Winds generally less than 10 mph.
.TUESDAY...Mostly clear. Lows in the lower 30s. Highs in the
upper 50s. Winds generally less than 10 mph.
.WEDNESDAY THROUGH THURSDAY...Mostly clear. Lows in the mid 30s.
Highs 59 to 64.
$$
WYZ415-121145-
North Zone Bridger Teton NF and Grand Teton NP-
Including the cities of Jackson and Moran
339 AM MDT Fri Sep 11 2026
.TODAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Showers and slight chance of thunderstorms in
the morning. Chance of precipitation near 100
percent.
Chance of thunder...20 percent.
Max temperature.....63-68.
24 hr trend......3 degrees cooler.
Min humidity........24-30 percent.
24 hr trend......9 percent wetter.
20-foot winds.......Southwest winds 10 to 15 mph until 1200, then
west around 20 mph. Gusts up to 35 mph.
Ridge top winds.....Southwest around 15 mph until 1200, then west
around 25 mph.
Chc of wetting rain.10 percent until 1200, then zero percent.
Transport winds.....Southwest around 15 mph until 1200, then west
around 30 mph.
Mixing Height.......1600-3600 ft agl until 1200, then 6200-8200 ft
agl.
Smoke dispersal.....Fair to good until 1200, then excellent.
.TONIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....36-41.
24 hr trend......4 degrees cooler.
Max humidity........70-76 percent.
24 hr trend......17 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Southwest winds 10 to 15 mph with gusts to
around 30 mph until 2400, then
downslope/downvalley 4-7 mph.
Ridge top winds.....South 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 10 to 15 mph.
Mixing Height.......2800-4800 ft agl until 2400, then 600 ft agl.
Smoke dispersal.....Good until 2400, then poor.
.SATURDAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Chance of thunder...0 percent.
Max temperature.....66-71.
24 hr trend......2 degrees warmer.
Min humidity........30-36 percent.
24 hr trend......1 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
southwest around 15 mph with gusts to around 35
mph.
Ridge top winds.....South around 10 mph until 1200, then southwest
around 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South around 15 mph until 1200, then southwest
around 25 mph.
Mixing Height.......2200-4200 ft agl until 1200, then 7400-9200 ft
agl.
Smoke dispersal.....Fair to good until 1200, then excellent.
.Forecast days 3 through 7......
.SATURDAY NIGHT...Partly cloudy. Chance of showers and slight
chance of thunderstorms after midnight. Lows in the lower 40s.
Southeast winds around 10 mph.
.SUNDAY...Cooler. Mostly clear. Slight chance of showers and
thunderstorms. Lows in the lower 30s. Highs in the upper 50s.
Southwest winds around 10 mph.
.MONDAY...Clear. Lows in the lower 30s. Highs in the mid 50s.
Winds generally less than 10 mph.
.TUESDAY...Mostly clear. Lows in the mid 30s. Highs in the lower
60s. Winds generally less than 10 mph.
.WEDNESDAY...Mostly clear. Lows in the mid 30s. Highs in the
lower 60s.
.THURSDAY...Mostly sunny. Slight chance of showers in the
afternoon. Highs in the mid 60s.
$$
WYZ416-121145-
West Wind River Mountains/East Zone Bridger Teton NF-
339 AM MDT Fri Sep 11 2026
.TODAY...
Sky/weather.........Partly cloudy. Showers in the morning. Slight
chance of showers and thunderstorms in the
afternoon. Chance of precipitation near 100
percent.
Chance of thunder...10 percent.
Max temperature.....61-66.
24 hr trend......3 degrees cooler.
Min humidity........29-35 percent.
24 hr trend......14 percent wetter.
20-foot winds.......West winds 10 to 15 mph until 1200, then around
20 mph. Gusts up to 35 mph.
Ridge top winds.....West around 15 mph until 1200, then around 25
mph.
Chc of wetting rain.15 percent until 1200, then zero percent.
Transport winds.....West around 20 mph until 1200, then around 30
mph.
Mixing Height.......1400-3400 ft agl until 1200, then 5000-7000 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good to
excellent.
.TONIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....37-42.
24 hr trend......3 degrees cooler.
Max humidity........72-78 percent.
24 hr trend......6 percent drier.
Humidity recovery...Excellent.
20-foot winds.......West winds around 15 mph with gusts to around
30 mph until 2100, then downslope/downvalley
4-7 mph.
Ridge top winds.....West around 15 mph until 2400, then south.
Chc of wetting rain.Zero percent.
Transport winds.....West 10 to 15 mph.
Mixing Height.......2200-4200 ft agl until 2400, then 600 ft agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.SATURDAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Chance of thunder...0 percent.
Max temperature.....63-68.
24 hr trend......3 degrees warmer.
Min humidity........30-36 percent.
24 hr trend......2 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then
southwest 10 to 15 mph with gusts to around 40
mph until 1500, then west around 20 mph with
gusts to around 40 mph.
Ridge top winds.....South around 15 mph until 1200, then southwest
around 25 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 15 mph until 1200, then around
25 mph.
Mixing Height.......2200-4200 ft agl until 1200, then 7400-9400 ft
agl.
Smoke dispersal.....Fair to good until 1200, then excellent.
.Forecast days 3 through 7......
.SATURDAY NIGHT...Partly cloudy. Chance of showers in the
evening, then chance of showers and slight chance of
thunderstorms after midnight. Lows in the mid 40s. South winds
around 10 mph.
.SUNDAY...Mostly clear with slight chance of showers,
thunderstorms and snow showers. Lows in the lower 30s. Highs in
the upper 50s. Southwest winds around 15 mph.
.MONDAY...Clear. Lows in the lower 30s. Highs in the lower 50s.
West winds around 10 mph.
.TUESDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the mid 30s. Highs in the upper 50s. South
winds around 10 mph.
.WEDNESDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the mid 30s. Highs in the upper 50s.
.THURSDAY...Mostly sunny. Chance of showers and slight chance of
thunderstorms in the afternoon. Highs in the lower 60s.
$$
WYZ288-121145-
East Wind River Mountains/South Shoshone NF-
Including the cities of Dubois and South Pass
339 AM MDT Fri Sep 11 2026
.TODAY...
Sky/weather.........Partly cloudy. Showers in the morning. Slight
chance of showers and thunderstorms in the
afternoon. Chance of precipitation near 100
percent.
Chance of thunder...10 percent.
Max temperature.....65-70.
24 hr trend......5 degrees cooler.
Min humidity........25-31 percent.
24 hr trend......12 percent wetter.
20-foot winds.......Breezy. West winds 15 to 20 mph until 1500,
then around 25 mph. Gusts up to 45 mph.
Ridge top winds.....West 20 to 25 mph.
Chc of wetting rain.10 percent until 1200, then zero percent.
Transport winds.....West around 25 mph until 1200, then around 35
mph.
Mixing Height.......1800-3800 ft agl until 1200, then 6200-8200 ft
agl.
Smoke dispersal.....Good until 1200, then excellent.
.TONIGHT...
Sky/weather.........Partly cloudy. Patchy smoke early in the
morning.
Chance of thunder...0 percent.
Min temperature.....41-46.
24 hr trend......5 degrees cooler.
Max humidity........69-75 percent.
24 hr trend......14 percent wetter.
Humidity recovery...Good.
20-foot winds.......West winds 10 to 15 mph with gusts to around 40
mph until 2400, then downslope/downvalley 4-7
mph.
Ridge top winds.....West around 20 mph until 2400, then southwest
around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 20 mph until 2400, then southwest
around 10 mph.
Mixing Height.......2800-4800 ft agl until 2400, then 600 ft agl.
Smoke dispersal.....Good until 2400, then poor.
.SATURDAY...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Max temperature.....66-71.
24 hr trend......2 degrees warmer.
Min humidity........29-35 percent.
24 hr trend......Unchanged.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900. Winds west
around 20 mph after 1200. Gusts up to 40 mph.
Ridge top winds.....Southwest around 10 mph until 1200, then west
around 25 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 15 mph until 1200, then around
30 mph.
Mixing Height.......2200-4200 ft agl until 1200, then 7200-9200 ft
agl.
Smoke dispersal.....Fair to good until 1200, then excellent.
.Forecast days 3 through 7......
.SATURDAY NIGHT...Partly cloudy. Slight chance of showers in the
evening, then chance of showers after midnight. Lows in the upper
40s. Southwest winds around 10 mph.
.SUNDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the upper 30s. Highs in the lower 60s.
Southwest winds around 20 mph.
.MONDAY...Clear. Lows in the mid 30s. Highs in the upper 50s.
West winds around 10 mph.
.TUESDAY...Mostly clear. Slight chance of showers. Lows in the
lower 40s. Highs around 60. Southwest winds around 10 mph.
.WEDNESDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows around 40. Highs in the lower 60s.
.THURSDAY...Mostly sunny. Slight chance of showers in the
afternoon. Highs in the lower 60s.
$$
WYZ414-121145-
Salt and Wyoming Ranges/West Zone Bridger Teton NF-
Including the city of Afton
339 AM MDT Fri Sep 11 2026
.TODAY...
Sky/weather.........Partly cloudy. Chance of showers in the
morning. Slight chance of thunderstorms through
the day. Slight chance of showers in the
afternoon. Chance of precipitation 50 percent.
Chance of thunder...10 percent.
Max temperature.....63-68.
24 hr trend......2 degrees cooler.
Min humidity........28-34 percent.
24 hr trend......15 percent wetter.
20-foot winds.......Southwest winds 10 to 15 mph until 1500, then
west around 20 mph. Gusts up to 30 mph.
Ridge top winds.....West 15 to 20 mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....Southwest around 15 mph until 1200, then west
around 25 mph.
Mixing Height.......1600-3600 ft agl until 1200, then 5800-7600 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good to
excellent.
.TONIGHT...
Sky/weather.........Mostly clear. Slight chance of showers and
thunderstorms early in the evening. Patchy
smoke after midnight. Chance of precipitation
20 percent.
Chance of thunder...0 percent.
Min temperature.....39-44.
24 hr trend......3 degrees cooler.
Max humidity........75-81 percent.
24 hr trend......4 percent drier.
Humidity recovery...Excellent.
20-foot winds.......West winds around 10 mph with gusts to around
30 mph until 2100, then downslope/downvalley
4-7 mph.
Ridge top winds.....West around 10 mph until 2400, then south.
Chc of wetting rain.Zero percent.
Transport winds.....West around 15 mph until 2400, then south.
Mixing Height.......2200-4200 ft agl until 2400, then 600 ft agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.SATURDAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Chance of thunder...0 percent.
Max temperature.....66-71.
24 hr trend......3 degrees warmer.
Min humidity........25-31 percent.
24 hr trend......4 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then
southwest 10 to 15 mph with gusts to around 40
mph until 1500, then west around 20 mph with
gusts to around 40 mph.
Ridge top winds.....South around 10 mph until 1200, then southwest
around 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 15 mph until 1200, then around
25 mph.
Mixing Height.......2600-4600 ft agl until 1200, then 8200-9800 ft
agl.
Smoke dispersal.....Fair to good until 1200, then excellent.
.Forecast days 3 through 7......
.SATURDAY NIGHT...Partly cloudy. Lows in the upper 40s. South
winds around 15 mph.
.SUNDAY...Mostly clear. Lows in the lower 30s. Highs around 60.
West winds around 15 mph.
.MONDAY...Clear. Lows in the mid 30s. Highs in the upper 50s.
Winds generally less than 10 mph.
.TUESDAY...Mostly clear. Lows around 40. Highs in the mid 60s.
Winds generally less than 10 mph.
.WEDNESDAY...Mostly clear. Lows around 40. Highs in the mid 60s.
.THURSDAY...Mostly sunny. Slight chance of showers in the
afternoon. Highs in the upper 60s.
$$
WYZ278-121145-
Upper Green River Basin/Rock Springs BLM-
Including the cities of Big Piney, Farson, and Pinedale
339 AM MDT Fri Sep 11 2026
.TODAY...
Sky/weather.........Partly cloudy. Chance of showers in the
morning. Slight chance of showers and
thunderstorms in the afternoon. Chance of
precipitation 50 percent.
Chance of thunder...10 percent.
Max temperature.....67-72.
24 hr trend......2 degrees cooler.
Min humidity........23-29 percent.
24 hr trend......12 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900. Winds west
around 20 mph with gusts to around 35 mph after
1200.
Ridge top winds.....West around 15 mph until 1200, then around 25
mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 15 mph until 1200, then around 30
mph.
Mixing Height.......1800-3800 ft agl until 1200, then 7000-9000 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then excellent.
.TONIGHT...
Sky/weather.........Mostly clear. Patchy smoke after midnight.
Chance of thunder...0 percent.
Min temperature.....39-44.
24 hr trend......6 degrees cooler.
Max humidity........78-84 percent.
24 hr trend......19 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......West winds around 15 mph with gusts to around
30 mph until 2100, then downslope/downvalley
4-7 mph.
Ridge top winds.....Northwest around 15 mph until 2400, then
northeast.
Chc of wetting rain.Zero percent.
Transport winds.....West around 15 mph until 2400, then north.
Mixing Height.......3000-5000 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Good until 2400, then poor.
.SATURDAY...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Max temperature.....71-76.
24 hr trend......4 degrees warmer.
Min humidity........20-26 percent.
24 hr trend......4 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
southwest around 10 mph with gusts to around 35
mph until 1500, then west around 20 mph with
gusts to around 35 mph.
Ridge top winds.....Southeast around 10 mph until 1200, then west
around 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South around 10 mph until 1200, then southwest
around 25 mph.
Mixing Height.......1600-3600 ft agl until 1200, then 8400-10400 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then excellent.
.Forecast days 3 through 7......
.SATURDAY NIGHT...Partly cloudy. Slight chance of showers in the
evening. Lows in the upper 40s. Southwest winds around 10 mph.
.SUNDAY...Mostly clear. Lows in the mid 30s. Highs in the upper
60s. West winds around 15 mph.
.MONDAY...Clear. Lows in the mid 30s. Highs in the mid 60s. Winds
generally less than 10 mph.
.TUESDAY...Mostly clear. Lows in the upper 30s. Highs in the
upper 60s. Winds generally less than 10 mph.
.WEDNESDAY...Mostly clear. Lows in the upper 30s. Highs in the
lower 70s.
.THURSDAY...Mostly sunny. Slight chance of showers and
thunderstorms in the afternoon. Highs in the lower 70s.
$$
WYZ277-121145-
Lincoln and Uinta Counties/Lower Elevations-
Including the cities of Evanston, Fort Bridger, and Kemmerer
339 AM MDT Fri Sep 11 2026
.TODAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Chance of showers in the morning. Slight chance
of showers and thunderstorms in the afternoon.
Chance of precipitation 50 percent.
Chance of thunder...10 percent.
Max temperature.....69-74.
24 hr trend......1 degree cooler.
Min humidity........22-28 percent.
24 hr trend......10 percent wetter.
20-foot winds.......Breezy. Upslope/upvalley 5-9 mph until 0900.
Winds west 20 to 25 mph with gusts to around 35
mph after 1200.
Ridge top winds.....West around 15 mph until 1200, then around 25
mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 15 mph until 1200, then around 30
mph.
Mixing Height.......1800-3800 ft agl until 1200, then 7200-9200 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then excellent.
.TONIGHT...
Sky/weather.........Mostly clear. Patchy smoke late in the evening.
Chance of thunder...0 percent.
Min temperature.....42-47.
24 hr trend......5 degrees cooler.
Max humidity........73-79 percent.
24 hr trend......13 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......West winds around 15 mph with gusts to around
30 mph until 2100, then downslope/downvalley
4-7 mph.
Ridge top winds.....West around 15 mph until 2400, then around 5
mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 15 mph until 2400, then southwest
around 5 mph.
Mixing Height.......3200-5200 ft agl until 2400, then 600 ft agl.
Smoke dispersal.....Good until 2400, then poor.
.SATURDAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Chance of thunder...0 percent.
Max temperature.....73-78.
24 hr trend......5 degrees warmer.
Min humidity........18-24 percent.
24 hr trend......5 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then west
15 to 20 mph with gusts to around 35 mph.
Ridge top winds.....Southwest around 10 mph until 1200, then west
around 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 10 mph until 1200, then around
25 mph.
Mixing Height.......2200-4200 ft agl until 1200, then 9000-11000 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then excellent.
.Forecast days 3 through 7......
.SATURDAY NIGHT...Partly cloudy. Lows around 50. Southwest winds
around 15 mph.
.SUNDAY...Mostly clear. Lows in the mid 30s. Highs in the upper
60s. West winds around 15 mph.
.MONDAY...Clear. Lows in the upper 30s. Highs in the mid 60s.
Winds generally less than 10 mph.
.TUESDAY...Mostly clear. Lows in the lower 40s. Highs in the
lower 70s. Winds generally less than 10 mph.
.WEDNESDAY THROUGH THURSDAY...Mostly clear. Lows in the lower
40s. Highs in the lower 70s.
$$
WYZ279-121145-
Sweetwater County/Rock Springs BLM/Flaming Gorge NRA-
Including the cities of Green River, Rock Springs, and Wamsutter
339 AM MDT Fri Sep 11 2026
.TODAY...
Sky/weather.........Partly cloudy. Chance of showers early in the
morning. Slight chance of showers early in the
morning. Slight chance of showers and
thunderstorms late in the afternoon. Chance of
precipitation 50 percent.
Chance of thunder...10 percent.
Max temperature.....70-75.
24 hr trend......1 degree cooler.
Min humidity........22-28 percent.
24 hr trend......11 percent wetter.
20-foot winds.......Southwest winds 10 to 15 mph with gusts to
around 25 mph until 1200, then west around 20
mph with gusts to around 35 mph.
Ridge top winds.....Southwest around 15 mph until 1200, then west
around 25 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 15 mph until 1200, then around 30
mph.
Mixing Height.......2000-4000 ft agl until 1200, then 7800-9800 ft
agl.
Smoke dispersal.....Fair to good until 1200, then excellent.
.TONIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....46-51.
24 hr trend......5 degrees cooler.
Max humidity........66-72 percent.
24 hr trend......20 percent wetter.
Humidity recovery...Good.
20-foot winds.......West winds around 15 mph with gusts to around
30 mph until 2100, then downslope/downvalley
4-7 mph.
Ridge top winds.....West around 15 mph until 2400, then south.
Chc of wetting rain.Zero percent.
Transport winds.....West around 15 mph until 2400, then south.
Mixing Height.......3800-5800 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Good to very good until 2400, then poor.
.SATURDAY...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Max temperature.....74-79.
24 hr trend......3 degrees warmer.
Min humidity........28-34 percent.
24 hr trend......1 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
southwest around 15 mph with gusts to around 30
mph.
Ridge top winds.....South around 10 mph until 1200, then southwest
around 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 10 mph until 1200, then around
20 mph.
Mixing Height.......2200-4200 ft agl until 1200, then 8400-10400 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then excellent.
.Forecast days 3 through 7......
.SATURDAY NIGHT...Partly cloudy. Lows in the mid 50s. South winds
around 10 mph.
.SUNDAY...Partly cloudy. Slight chance of showers and
thunderstorms. Lows in the lower 40s. Highs in the mid 70s.
Southwest winds around 15 mph.
.MONDAY...Mostly clear. Lows in the lower 40s. Highs in the upper
60s. Northwest winds around 10 mph.
.TUESDAY...Partly cloudy. Slight chance of showers and
thunderstorms. Lows in the mid 40s. Highs in the lower 70s. Winds
generally less than 10 mph.
.WEDNESDAY...Partly cloudy. Slight chance of showers and
thunderstorms. Lows in the mid 40s. Highs in the mid 70s.
.THURSDAY...Mostly sunny. Slight chance of showers and
thunderstorms in the afternoon. Highs in the lower 70s.
$$
WYZ289-121145-
Granite/Green/Ferris/Rattlesnake Mountains-
Including the city of Jeffrey City
339 AM MDT Fri Sep 11 2026
.TODAY...
Sky/weather.........Partly cloudy. Slight chance of showers early
in the afternoon. Chance of showers 20 percent.
Chance of thunder...0 percent.
Max temperature.....72-77.
24 hr trend......3 degrees cooler.
Min humidity........18-24 percent.
24 hr trend......11 percent wetter.
20-foot winds.......Breezy. West winds 10 to 15 mph until 1200,
then 20 to 25 mph. Gusts up to 35 mph.
Ridge top winds.....West 20 to 25 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 20 mph until 1200, then around 30
mph.
Mixing Height.......2200-4200 ft agl until 1200, then 7400-9400 ft
agl.
Smoke dispersal.....Good until 1200, then excellent.
.TONIGHT...
Sky/weather.........Partly cloudy. Patchy smoke early in the
morning.
Chance of thunder...0 percent.
Min temperature.....43-48.
24 hr trend......10 degrees cooler.
Max humidity........75-81 percent.
24 hr trend......42 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......Northwest winds 10 to 15 mph until 2400, then
east. Gusts up to 30 mph.
Ridge top winds.....Northwest around 20 mph until 2400, then east.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 20 mph until 2400, then east.
Mixing Height.......3600-5600 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Good to very good until 2400, then poor.
.SATURDAY...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Max temperature.....74-79.
24 hr trend......2 degrees warmer.
Min humidity........18-24 percent.
24 hr trend......1 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
southwest 15 to 20 mph with gusts to around 35
mph.
Ridge top winds.....Southeast around 10 mph until 1200, then
southwest around 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South around 10 mph until 1200, then southwest
around 25 mph.
Mixing Height.......1200-3200 ft agl until 1200, then 7400-9400 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then excellent.
.Forecast days 3 through 7......
.SATURDAY NIGHT...Partly cloudy. Lows in the lower 50s. Southwest
winds around 10 mph.
.SUNDAY...Partly cloudy. Slight chance of showers and
thunderstorms. Lows in the mid 40s. Highs in the mid 70s.
Southwest winds around 15 mph.
.MONDAY...Clear. Lows in the upper 30s. Highs in the upper 60s.
Northwest winds around 15 mph.
.TUESDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the mid 40s. Highs around 70. South winds
around 10 mph.
.WEDNESDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the lower 40s. Highs in the lower 70s.
.THURSDAY...Mostly sunny. Slight chance of showers in the
afternoon. Highs in the lower 70s.
$$
WYZ300-121145-
Casper Mountain-
339 AM MDT Fri Sep 11 2026
.TODAY...
Sky/weather.........Partly cloudy. Slight chance of showers late in
the morning. Slight chance of showers and
thunderstorms late in the afternoon. Chance of
precipitation 20 percent.
Chance of thunder...10 percent.
Max temperature.....71-76.
24 hr trend......3 degrees cooler.
Min humidity........20-26 percent.
24 hr trend......11 percent wetter.
20-foot winds.......Breezy. West winds 15 to 20 mph with gusts to
around 40 mph until 1500, then around 25 mph
with gusts to around 40 mph.
Ridge top winds.....West 20 to 25 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 25 mph until 1200, then around 35
mph.
Mixing Height.......2400-4400 ft agl until 1200, then 8000-9600 ft
agl.
Smoke dispersal.....Good to very good until 1200, then excellent.
.TONIGHT...
Sky/weather.........Partly cloudy. Slight chance of showers and
thunderstorms early in the evening. Chance of
precipitation 20 percent.
Chance of thunder...10 percent.
Min temperature.....44-49.
24 hr trend......10 degrees cooler.
Max humidity........77-83 percent.
24 hr trend......44 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......Northwest winds around 15 mph with gusts to
around 30 mph until 2100, then northeast with
gusts to around 30 mph until 0300, then
downslope/downvalley 4-7 mph.
Ridge top winds.....North around 15 mph until 2400, then east.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 15 mph until 2400, then east.
Mixing Height.......3200-5200 ft agl until 2400, then 600 ft agl.
Smoke dispersal.....Good to very good until 2400, then poor.
.SATURDAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Chance of thunder...0 percent.
Max temperature.....71-76.
24 hr trend......Unchanged.
Min humidity........27-33 percent.
24 hr trend......2 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then west
around 10 mph with gusts to around 25 mph.
Ridge top winds.....South around 10 mph until 1200, then west.
Chc of wetting rain.Zero percent.
Transport winds.....South around 10 mph until 1200, then west
around 20 mph.
Mixing Height.......1200-3200 ft agl until 1200, then 6200-8200 ft
agl.
Smoke dispersal.....Poor until 1200, then very good to excellent.
.Forecast days 3 through 7......
.SATURDAY NIGHT...Partly cloudy. Lows in the mid 50s. South winds
around 10 mph.
.SUNDAY...Partly cloudy with chance of showers and slight chance
of thunderstorms. Lows around 50. Highs in the mid 70s. Southwest
winds around 15 mph.
.MONDAY...Cooler, clear. Lows in the lower 40s. Highs in the mid
60s. Northwest winds around 15 mph.
.TUESDAY...Partly cloudy. Chance of showers and slight chance of
thunderstorms. Lows in the upper 40s. Highs in the upper 60s.
Southeast winds around 10 mph.
.WEDNESDAY THROUGH THURSDAY...Mostly clear with slight chance of
showers and thunderstorms. Lows in the mid 40s. Highs around 70.
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