Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Riverton, WY
Issued by NWS Riverton, WY
985
FNUS55 KRIW 060908
FWFRIW
Fire Weather Planning Forecast for Western and Central Wyoming
National Weather Service Riverton WY
308 AM MDT Sun Sep 6 2026
.DISCUSSION...
...Yellowstone NP and Teton dispatch areas (includes fire weather
zones 140...414...415...and 416)...
The day will start off rain free. A surge of moisture and an
approaching weather system will bring the chance of showers
to Zones 415 and 416 this afternoon, the spreading northward
during the evening and continuing at night, ending from south to
north. Relative humidity should remain above critical levels.
Wind should remain light to moderate except in and around any
shower or thunderstorm. Mixing and smoke dispersal will be
good to excellent in the afternoon.
...Cody dispatch area (includes fire weather zones 275...276...
282...283...285...286...287...288...and 289)...
Today will be another warm and mainly dry day. Moisture moving
in from the south will bring the chance of showers and
thunderstorms late today into tonight, especially in the
western zones. Relative humidity will fall to around 15 percent
at times in the afternoon. However, wind should remain light
to moderate except in and round any shower or thunderstorm. Mixing
and smoke dispersal will be good to excellent in the afternoon.
Elevated to critical fire weather will be possible much of next
week, with Tuesday looking like the day of the most concern.
...Casper dispatch area (includes fire weather zones 277...278...
279...280...281...285...289...and 300)...
Today will be another warm and mainly dry day. Moisture moving
in from the south will bring the chance of showers and
thunderstorms late today to the southern zones, the spreading
northward through the night. Relative humidity will fall to around
15 percent at times in the afternoon. However, wind should remain light
to moderate except in and round any shower or thunderstorm. Mixing
and smoke dispersal will be good to excellent in the afternoon.
Elevated to critical fire weather will be possible much of next
week, with Tuesday looking like the day of the most concern.
...Thunderstorms imply strong gusty and erratic winds...
WYZ280-071115-
Natrona County/Casper BLM-
Including the cities of Casper and Midwest
308 AM MDT Sun Sep 6 2026
.TODAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Chance of thunder...0 percent.
Max temperature.....85-90.
24 hr trend......1 degree warmer.
Min humidity........10-16 percent.
24 hr trend......4 percent drier.
20-foot winds.......Southwest winds 10 to 15 mph with gusts to
around 25 mph.
Ridge top winds.....Southwest 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 15 to 20 mph.
Mixing Height.......2000-4000 ft agl until 1200, then 8400-10400 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then excellent.
.TONIGHT...
Sky/weather.........Mostly cloudy. Slight chance of showers and
thunderstorms in the evening. Chance of showers
after midnight. Chance of precipitation 50
percent.
Chance of thunder...10 percent.
Min temperature.....60-65.
24 hr trend......5 degrees warmer.
Max humidity........62-68 percent.
24 hr trend......6 percent wetter.
Humidity recovery...Good.
20-foot winds.......Southwest winds 15 to 20 mph. Gusts up to 25
mph until 2400, then 35 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.......3800-5800 ft agl until 2400, then 600-1600 ft
agl.
Smoke dispersal.....Good until 2400, then poor.
.LABOR DAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Chance of thunder...0 percent.
Max temperature.....75-80.
24 hr trend......10 degrees cooler.
Min humidity........21-27 percent.
24 hr trend......10 percent wetter.
20-foot winds.......Windy. Southwest winds around 20 mph until
0900, then around 30 mph. Gusts up to 50 mph.
Ridge top winds.....Southwest 30 to 35 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 30 to 35 mph.
Mixing Height.......2800-4800 ft agl until 1200, then 8000-10000 ft
agl.
Smoke dispersal.....Good to very good until 1200, then excellent.
.Forecast days 3 through 7......
.MONDAY NIGHT...Cooler. Mostly clear. Lows around 50. West winds
around 15 mph.
.TUESDAY THROUGH THURSDAY...Mostly clear. Lows 47 to 52. Highs
77 to 82. West winds around 10 mph.
.FRIDAY...Mostly clear. Slight chance of showers. Lows around 50.
Highs in the lower 80s.
.SATURDAY...Cooler. Partly cloudy. Slight chance of showers in
the morning, then slight chance of showers and thunderstorms in
the afternoon. Highs around 70.
$$
WYZ283-071115-
Upper Wind River Basin/Wind River Basin-
Including the cities of Crowheart, Lander, Riverton, and Shoshoni
308 AM MDT Sun Sep 6 2026
.TODAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Slight chance of showers late in the afternoon.
Chance of showers 20 percent.
Chance of thunder...0 percent.
Max temperature.....80-85.
24 hr trend......1 degree cooler.
Min humidity........15-21 percent.
24 hr trend......Unchanged.
20-foot winds.......Southwest winds around 10 mph until 0900, then
upslope/upvalley 5-9 mph until 1200, then south
10 to 15 mph. Gusts up to 25 mph.
Ridge top winds.....South 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 10 mph until 1200, then around
20 mph.
Mixing Height.......1400-3400 ft agl until 1200, then 7000-9000 ft
agl.
Smoke dispersal.....Poor until 1200, then very good.
.TONIGHT...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Chance of showers and slight chance of
thunderstorms. Chance of precipitation 50
percent.
Chance of thunder...10 percent.
Min temperature.....54-59.
24 hr trend......3 degrees warmer.
Max humidity........67-73 percent.
24 hr trend......21 percent wetter.
Humidity recovery...Good.
20-foot winds.......Southwest winds 15 to 20 mph with gusts to
around 35 mph.
Ridge top winds.....Southwest 20 to 25 mph.
Chc of wetting rain.5 percent.
Transport winds.....Southwest 20 to 25 mph.
Mixing Height.......3600-5600 ft agl until 2400, then 600-1400 ft
agl.
Smoke dispersal.....Good until 2400, then poor.
.LABOR DAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Chance of thunder...0 percent.
Max temperature.....70-75.
24 hr trend......9 degrees cooler.
Min humidity........21-27 percent.
24 hr trend......7 percent wetter.
20-foot winds.......Windy. Southwest winds 20 to 25 mph until 1200,
then west 25 to 30 mph. Gusts up to 50 mph.
Ridge top winds.....Southwest 25 to 30 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 25 to 30 mph.
Mixing Height.......2600-4600 ft agl until 1200, then 7800-9800 ft
agl.
Smoke dispersal.....Good until 1200, then excellent.
.Forecast days 3 through 7......
.MONDAY NIGHT...Clear. Lows in the upper 40s. West winds around
15 mph.
.TUESDAY THROUGH THURSDAY...Mostly clear. Lows 48 to 53. Highs
76 to 81. West winds around 10 mph.
.FRIDAY...Mostly clear. Slight chance of showers. Lows in the
lower 50s. Highs in the lower 80s.
.SATURDAY...Cooler. Partly cloudy. Slight chance of showers in
the morning, then slight chance of showers and thunderstorms in
the afternoon. Highs in the lower 70s.
$$
WYZ285-071115-
South Bighorn Mountains-
308 AM MDT Sun Sep 6 2026
.TODAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Chance of thunder...0 percent.
Max temperature.....78-83.
24 hr trend......1 degree warmer.
Min humidity........13-19 percent.
24 hr trend......4 percent drier.
20-foot winds.......Southwest winds 10 to 15 mph with gusts to
around 25 mph.
Ridge top winds.....Southwest 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 15 to 20 mph.
Mixing Height.......2400-4400 ft agl until 1200, then 7000-9000 ft
agl.
Smoke dispersal.....Fair to good until 1200, then very good.
.TONIGHT...
Sky/weather.........Mostly cloudy. Chance of showers and slight
chance of thunderstorms in the evening. Showers
likely after midnight. Chance of precipitation
70 percent.
Chance of thunder...10 percent.
Min temperature.....55-60.
24 hr trend......1 degree warmer.
Max humidity........63-69 percent.
24 hr trend......20 percent wetter.
Humidity recovery...Good.
20-foot winds.......Breezy. Southwest winds 15 to 20 mph with gusts
to around 40 mph until 0300, then around 25 mph
with gusts to around 40 mph.
Ridge top winds.....Southwest 20 to 25 mph.
Chc of wetting rain.Zero percent until 2400, then 20 percent.
Transport winds.....Southwest around 20 mph until 2400, then around
30 mph.
Mixing Height.......3400-5400 ft agl until 2400, then 600-1400 ft
agl.
Smoke dispersal.....Good until 2400, then poor.
.LABOR DAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Chance of thunder...0 percent.
Max temperature.....69-74.
24 hr trend......9 degrees cooler.
Min humidity........22-28 percent.
24 hr trend......9 percent wetter.
20-foot winds.......Windy. Southwest winds 25 to 30 mph with gusts
to around 45 mph.
Ridge top winds.....Southwest 30 to 35 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 30 to 35 mph.
Mixing Height.......2400-4400 ft agl until 1200, then 7600-9600 ft
agl.
Smoke dispersal.....Good until 1200, then excellent.
.Forecast days 3 through 7......
.MONDAY NIGHT...Clear. Lows in the upper 40s. West winds around
15 mph.
.TUESDAY...Clear. Lows in the mid 40s. Highs in the upper 60s.
Northwest winds around 10 mph.
.WEDNESDAY THROUGH THURSDAY...Mostly clear. Lows 50 to 55. Highs
69 to 74. West winds around 10 mph.
.FRIDAY...Mostly clear. Slight chance of showers. Lows in the
upper 40s. Highs in the lower 70s.
.SATURDAY...Cooler. Partly cloudy. Slight chance of showers in
the morning, then slight chance of showers and thunderstorms in
the afternoon. Highs in the lower 60s.
$$
WYZ281-071115-
Johnson County/Casper BLM-
Including the cities of Buffalo and Kaycee
308 AM MDT Sun Sep 6 2026
.TODAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Chance of thunder...0 percent.
Max temperature.....84-89.
24 hr trend......5 degrees warmer.
Min humidity........14-20 percent.
24 hr trend......5 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then south
10 to 15 mph with gusts to around 25 mph.
Ridge top winds.....South around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 15 to 20 mph.
Mixing Height.......2000-4000 ft agl until 1200, then 8400-10400 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good to
excellent.
.TONIGHT...
Sky/weather.........Mostly cloudy. Slight chance of showers early
in the evening. Chance of showers late in the
evening, then slight chance of showers early in
the morning. Chance of showers 50 percent.
Chance of thunder...0 percent.
Min temperature.....60-65.
24 hr trend......6 degrees warmer.
Max humidity........60-66 percent.
24 hr trend......1 percent wetter.
Humidity recovery...Good.
20-foot winds.......Southwest winds 10 to 15 mph. Gusts up to 20
mph until 2400, then 30 mph.
Ridge top winds.....Southwest 15 to 20 mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....Southwest 15 to 20 mph.
Mixing Height.......3200-5200 ft agl until 2400, then 600-1200 ft
agl.
Smoke dispersal.....Poor to fair.
.LABOR DAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Chance of thunder...0 percent.
Max temperature.....76-81.
24 hr trend......8 degrees cooler.
Min humidity........20-26 percent.
24 hr trend......6 percent wetter.
20-foot winds.......Breezy. Southwest winds 20 to 25 mph with gusts
to around 45 mph.
Ridge top winds.....Southwest 25 to 30 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 25 to 30 mph.
Mixing Height.......2800-4800 ft agl until 1200, then 8200-10200 ft
agl.
Smoke dispersal.....Good to very good until 1200, then excellent.
.Forecast days 3 through 7......
.MONDAY NIGHT...Cooler, clear. Lows in the lower 50s. West winds
around 10 mph.
.TUESDAY...Clear. Lows in the upper 40s. Highs in the upper 70s.
Northwest winds around 10 mph.
.WEDNESDAY THROUGH THURSDAY...Mostly clear. Lows 50 to 55. Highs
79 to 84. West winds around 10 mph.
.FRIDAY...Mostly clear. Slight chance of showers. Lows around 50.
Highs in the lower 80s.
.SATURDAY...Cooler. Partly cloudy. Slight chance of showers in
the morning, then slight chance of showers and thunderstorms in
the afternoon. Highs in the upper 60s.
$$
WYZ282-071115-
South Bighorn Basin/Worland BLM-
Including the cities of Ten Sleep, Thermopolis, and Worland
308 AM MDT Sun Sep 6 2026
.TODAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Chance of thunder...0 percent.
Max temperature.....81-86.
24 hr trend......Unchanged.
Min humidity........11-17 percent.
24 hr trend......3 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then south
around 10 mph with higher gusts.
Ridge top winds.....South 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South 10 to 15 mph.
Mixing Height.......600-2600 ft agl until 1200, then 6200-8200 ft
agl.
Smoke dispersal.....Poor until 1200, then good to very good.
.TONIGHT...
Sky/weather.........Mostly cloudy. Slight chance of showers early
in the evening. Chance of showers early in the
evening. Chance of showers 50 percent.
Chance of thunder...0 percent.
Min temperature.....52-57.
24 hr trend......5 degrees warmer.
Max humidity........65-71 percent.
24 hr trend......9 percent wetter.
Humidity recovery...Good.
20-foot winds.......Southwest winds 10 to 15 mph until 2400, then
south 15 to 20 mph. Gusts up to 35 mph.
Ridge top winds.....South around 20 mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....South around 20 mph.
Mixing Height.......3600-5600 ft agl until 2400, then 600-1600 ft
agl.
Smoke dispersal.....Poor to fair.
.LABOR DAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Chance of thunder...0 percent.
Max temperature.....72-77.
24 hr trend......8 degrees cooler.
Min humidity........18-24 percent.
24 hr trend......4 percent wetter.
20-foot winds.......Breezy. South winds 10 to 15 mph until 1200,
then southwest around 25 mph. Gusts up to 40
mph.
Ridge top winds.....South around 20 mph until 1200, then southwest
around 30 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 20 mph until 1200, then around
30 mph.
Mixing Height.......2800-4800 ft agl until 1200, then 8600-10600 ft
agl.
Smoke dispersal.....Good until 1200, then excellent.
.Forecast days 3 through 7......
.MONDAY NIGHT...Clear. Lows around 50. West winds around 10 mph.
.TUESDAY...Clear. Lows in the upper 40s. Highs in the mid 70s.
Northwest winds around 10 mph.
.WEDNESDAY THROUGH THURSDAY...Mostly clear. Lows 52 to 57. Highs
78 to 83. Winds generally less than 10 mph.
.FRIDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the lower 50s. Highs in the lower 80s.
.SATURDAY...Cooler. Partly cloudy. Slight chance of showers in
the morning, then slight chance of showers and thunderstorms in
the afternoon. Highs in the lower 70s.
$$
WYZ275-071115-
North Bighorn Basin/Worland BLM-
Including the cities of Greybull, Lovell, and Powell
308 AM MDT Sun Sep 6 2026
.TODAY...
Sky/weather.........Sunny then becoming partly cloudy.
Chance of thunder...0 percent.
Max temperature.....77-82.
24 hr trend......2 degrees warmer.
Min humidity........14-20 percent.
24 hr trend......4 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
southeast around 10 mph. Gusts up to 20 mph.
Ridge top winds.....South 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South 10 to 15 mph.
Mixing Height.......400-2400 ft agl until 1200, then 5600-7600 ft
agl.
Smoke dispersal.....Poor until 1200, then good to very good.
.TONIGHT...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Chance of showers and slight chance of
thunderstorms. Chance of precipitation 50
percent.
Chance of thunder...10 percent.
Min temperature.....51-56.
24 hr trend......3 degrees warmer.
Max humidity........68-74 percent.
24 hr trend......7 percent wetter.
Humidity recovery...Good.
20-foot winds.......South winds 10 to 15 mph with gusts to around
30 mph.
Ridge top winds.....South 15 to 20 mph.
Chc of wetting rain.Zero percent until 2400, then 10 percent.
Transport winds.....South 15 to 20 mph.
Mixing Height.......2800-4800 ft agl until 2400, then 600-1000 ft
agl.
Smoke dispersal.....Poor to fair.
.LABOR DAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Slight chance of showers and thunderstorms in
the afternoon. Chance of precipitation 20
percent.
Chance of thunder...10 percent.
Max temperature.....68-73.
24 hr trend......9 degrees cooler.
Min humidity........20-26 percent.
24 hr trend......2 percent wetter.
20-foot winds.......Breezy. South winds around 10 mph with gusts to
around 25 mph until 1200, then southwest 20 to
25 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.....South around 15 mph until 1200, then west
around 25 mph.
Mixing Height.......2200-4200 ft agl until 1200, then 7800-9800 ft
agl.
Smoke dispersal.....Fair to good until 1200, then excellent.
.Forecast days 3 through 7......
.MONDAY NIGHT...Clear. Lows in the upper 40s. West winds around
10 mph.
.TUESDAY...Clear. Lows in the upper 40s. Highs in the mid 70s.
Winds generally less than 10 mph.
.WEDNESDAY THROUGH THURSDAY...Mostly clear. Lows 51 to 56. Highs
77 to 82. Winds generally less than 10 mph.
.FRIDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows around 50. Highs around 80.
.SATURDAY...Cooler. Partly cloudy. Slight chance of showers in
the morning, then slight chance of showers and thunderstorms in
the afternoon. Highs in the upper 60s.
$$
WYZ276-071115-
Cody Foothills-
Including the cities of Clark, Cody, and Meeteetse
308 AM MDT Sun Sep 6 2026
.TODAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Chance of thunder...0 percent.
Max temperature.....79-84.
24 hr trend......6 degrees warmer.
Min humidity........18-24 percent.
24 hr trend......7 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then south
around 10 mph. Gusts up to 20 mph.
Ridge top winds.....South 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 10 mph until 1200, then south
around 20 mph.
Mixing Height.......1400-3400 ft agl until 1200, then 7200-9200 ft
agl.
Smoke dispersal.....Poor until 1200, then very good.
.TONIGHT...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Slight chance of showers early in the evening.
Slight chance of thunderstorms until early
morning. Chance of showers early in the
evening. Chance of precipitation 50 percent.
Chance of thunder...20 percent.
Min temperature.....54-59.
24 hr trend......2 degrees warmer.
Max humidity........68-74 percent.
24 hr trend......13 percent wetter.
Humidity recovery...Good.
20-foot winds.......Southwest winds around 10 mph until 0300, then
downslope/downvalley 4-7 mph. Gusts up to 25
mph.
Ridge top winds.....Southwest around 15 mph.
Chc of wetting rain.5 percent.
Transport winds.....Southwest around 15 mph.
Mixing Height.......2600-4600 ft agl until 2400, then 600-1000 ft
agl.
Smoke dispersal.....Poor to fair.
.LABOR DAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....68-73.
24 hr trend......10 degrees cooler.
Min humidity........21-27 percent.
24 hr trend......Unchanged.
20-foot winds.......Breezy. Upslope/upvalley 5-9 mph until 0900.
Winds west around 25 mph with gusts to around
50 mph after 1200.
Ridge top winds.....Southwest around 15 mph until 1200, then west
around 30 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 15 mph until 1200, then around
30 mph.
Mixing Height.......2400-4400 ft agl until 1200, then 7400-9400 ft
agl.
Smoke dispersal.....Fair to good until 1200, then excellent.
.Forecast days 3 through 7......
.MONDAY NIGHT...Clear. Lows in the upper 40s. West winds around
15 mph.
.TUESDAY...Clear. Lows in the upper 40s. Highs in the lower 70s.
West winds around 10 mph.
.WEDNESDAY THROUGH THURSDAY...Mostly clear. Lows in the mid 50s.
Highs 75 to 80. West winds 10 to 15 mph.
.FRIDAY...Mostly clear. Chance of showers and slight chance of
thunderstorms. Lows in the upper 40s. Highs in the upper 70s.
.SATURDAY...Cooler. Partly cloudy. Chance of showers in the
morning, then chance of showers and slight chance of
thunderstorms in the afternoon. Highs in the mid 60s.
$$
WYZ287-071115-
Owl Creek Mountains-
308 AM MDT Sun Sep 6 2026
.TODAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Chance of thunder...0 percent.
Max temperature.....76-81.
24 hr trend......Unchanged.
Min humidity........15-21 percent.
24 hr trend......2 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then south
10 to 15 mph with gusts to around 25 mph.
Ridge top winds.....South 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South around 10 mph until 1200, then around 20
mph.
Mixing Height.......1200-3200 ft agl until 1200, then 6800-8800 ft
agl.
Smoke dispersal.....Poor until 1200, then very good.
.TONIGHT...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Chance of showers through the night. Slight
chance of thunderstorms after midnight. Chance
of precipitation 50 percent.
Chance of thunder...10 percent.
Min temperature.....54-59.
24 hr trend......1 degree warmer.
Max humidity........59-65 percent.
24 hr trend......18 percent wetter.
Humidity recovery...Good.
20-foot winds.......Southwest winds around 15 mph with gusts to
around 35 mph.
Ridge top winds.....Southwest around 20 mph.
Chc of wetting rain.5 percent.
Transport winds.....South around 20 mph.
Mixing Height.......3400-5400 ft agl until 2400, then 600-1200 ft
agl.
Smoke dispersal.....Good until 2400, then poor.
.LABOR DAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....66-71.
24 hr trend......9 degrees cooler.
Min humidity........18-24 percent.
24 hr trend......3 percent wetter.
20-foot winds.......Windy. Southwest winds around 10 mph with gusts
to around 35 mph until 0900. Around 30 mph with
gusts to around 45 mph after 1200.
Ridge top winds.....Southwest around 20 mph until 1200, then around
35 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 20 mph until 1200, then around
35 mph.
Mixing Height.......2800-4800 ft agl until 1200, then 7600-9600 ft
agl.
Smoke dispersal.....Good until 1200, then excellent.
.Forecast days 3 through 7......
.MONDAY NIGHT...Clear. Lows in the upper 40s. West winds around
15 mph.
.TUESDAY THROUGH THURSDAY...Mostly clear. Lows 49 to 54. Highs
71 to 76. West winds around 10 mph.
.FRIDAY...Mostly clear. Slight chance of showers. Lows around 50.
Highs in the mid 70s.
.SATURDAY...Cooler. Partly cloudy. Slight chance of showers in
the morning, then chance of showers and slight chance of
thunderstorms in the afternoon. Highs in the mid 60s.
$$
WYZ286-071115-
Absaroka Mountains/North Shoshone NF-
Including the city of Pahaska
308 AM MDT Sun Sep 6 2026
.TODAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Slight chance of showers late in the afternoon.
Chance of showers 20 percent.
Chance of thunder...0 percent.
Max temperature.....70-75.
24 hr trend......Unchanged.
Min humidity........20-26 percent.
24 hr trend......2 percent drier.
20-foot winds.......Southwest winds around 10 mph with higher
gusts.
Ridge top winds.....Southwest around 15 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 7200-9200 ft
agl.
Smoke dispersal.....Fair to good until 1200, then very good to
excellent.
.TONIGHT...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Chance of showers in the evening. Slight chance
of thunderstorms through the night. Showers
after midnight. Chance of precipitation 90
percent.
Chance of thunder...20 percent.
Min temperature.....45-50.
24 hr trend......2 degrees cooler.
Max humidity........77-83 percent.
24 hr trend......26 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......Southwest winds around 10 mph and gusty.
Ridge top winds.....Southwest around 15 mph.
Chc of wetting rain.12 percent.
Transport winds.....Southwest around 15 mph.
Mixing Height.......2600-4600 ft agl until 2400, then 600-1200 ft
agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.LABOR DAY...
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.....57-62.
24 hr trend......14 degrees cooler.
Min humidity........29-35 percent.
24 hr trend......10 percent wetter.
20-foot winds.......Windy. West winds 15 to 20 mph with gusts to
around 45 mph until 1200, then around 30 mph
with gusts to around 55 mph.
Ridge top winds.....West around 20 mph until 1200, then around 35
mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 20 mph until 1200, then west
around 35 mph.
Mixing Height.......1800-3800 ft agl until 1200, then 5200-7200 ft
agl.
Smoke dispersal.....Fair to good until 1200, then excellent.
.Forecast days 3 through 7......
.MONDAY NIGHT...Clear. Lows in the upper 30s. West winds around
20 mph.
.TUESDAY...Clear. Lows in the upper 30s. Highs in the upper 50s.
West winds around 15 mph.
.WEDNESDAY THROUGH THURSDAY...Mostly clear. Lows in the mid 40s.
Highs 63 to 68. West winds around 15 mph.
.FRIDAY...Mostly clear. Chance of showers and slight chance of
thunderstorms. Lows in the lower 40s. Highs in the mid 60s.
.SATURDAY...Partly cloudy. Chance of showers in the morning, then
chance of showers and slight chance of thunderstorms in the
afternoon. Highs in the upper 50s.
$$
WYZ140-071115-
Yellowstone National Park-
Including the cities of Lake, Mammoth, and Old Faithful
308 AM MDT Sun Sep 6 2026
.TODAY...
Sky/weather.........Mostly sunny then becoming 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......1 degree cooler.
Min humidity........20-26 percent.
24 hr trend......3 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then south
around 10 mph. Gusts up to 20 mph.
Ridge top winds.....South 10 to 15 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 7200-9200 ft
agl.
Smoke dispersal.....Fair to good until 1200, then excellent.
.TONIGHT...
Sky/weather.........Mostly cloudy. Showers and slight chance of
thunderstorms through the night. Patchy fog
after midnight. Some thunderstorms may be
severe in the evening. Chance of precipitation
90 percent.
Chance of thunder...20 percent.
Min temperature.....43-48.
24 hr trend......1 degree cooler.
Max humidity........84-90 percent.
24 hr trend......26 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......Downslope/downvalley 4-7 mph.
Ridge top winds.....South around 10 mph.
Chc of wetting rain.25 percent until 2400, then 50 percent.
Transport winds.....South around 15 mph.
Mixing Height.......3000-5000 ft agl until 2400, then 600-1200 ft
agl.
Smoke dispersal.....Good until 2400, then poor.
.LABOR DAY...
Sky/weather.........Mostly cloudy then becoming 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...20 percent.
Max temperature.....54-59.
24 hr trend......16 degrees cooler.
Min humidity........40-46 percent.
24 hr trend......18 percent wetter.
20-foot winds.......Southwest winds 10 to 15 mph until 1200, then
around 20 mph. Gusts up to 40 mph.
Ridge top winds.....Southwest 20 to 25 mph.
Chc of wetting rain.25 percent until 1200, then zero percent.
Transport winds.....Southwest around 20 mph until 1200, then around
30 mph.
Mixing Height.......1400-3400 ft agl until 1200, then 4800-6800 ft
agl.
Smoke dispersal.....Fair to good until 1200, then very good to
excellent.
.Forecast days 3 through 7......
.MONDAY NIGHT...Colder. Mostly clear. Lows in the mid 30s.
Southwest winds around 10 mph.
.TUESDAY...Clear. Lows in the mid 30s. Highs in the upper 50s.
Winds generally less than 10 mph.
.WEDNESDAY THROUGH THURSDAY...Mostly clear. Lows 38 to 43. Highs
62 to 67. Southwest winds around 10 mph.
.FRIDAY...Partly cloudy. Chance of showers and slight chance of
thunderstorms. Lows around 40. Highs in the mid 60s.
.SATURDAY...Partly cloudy. Chance of showers in the morning, then
chance of showers and slight chance of thunderstorms in the
afternoon. Highs in the upper 50s.
$$
WYZ415-071115-
North Zone Bridger Teton NF and Grand Teton NP-
Including the cities of Jackson and Moran
308 AM MDT Sun Sep 6 2026
.TODAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Slight chance of showers late in the afternoon.
Chance of showers late in the afternoon. Chance
of showers 50 percent.
Chance of thunder...0 percent.
Max temperature.....68-73.
24 hr trend......2 degrees cooler.
Min humidity........23-29 percent.
24 hr trend......3 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.....South 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South around 15 mph until 1200, then southwest
around 25 mph.
Mixing Height.......1800-3800 ft agl until 1200, then 6800-8800 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good to
excellent.
.TONIGHT...
Sky/weather.........Mostly cloudy. Chance of thunderstorms in the
evening. Showers through the night. Slight
chance of thunderstorms after midnight. Chance
of precipitation 90 percent.
Chance of thunder...30 percent.
Min temperature.....39-44.
24 hr trend......2 degrees cooler.
Max humidity........90-96 percent.
24 hr trend......37 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......South winds around 10 mph until 2100, then
downslope/downvalley 4-7 mph. Gusts up to 15
mph.
Ridge top winds.....South around 10 mph.
Chc of wetting rain.55 percent until 2400, then 40 percent.
Transport winds.....South around 15 mph.
Mixing Height.......2000-4000 ft agl until 2400, then 600-1400 ft
agl.
Smoke dispersal.....Poor to fair.
.LABOR DAY...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Showers likely in the morning. Slight chance of
thunderstorms through the day. Slight chance of
showers in the afternoon. Chance of
precipitation 70 percent.
Chance of thunder...20 percent.
Max temperature.....53-58.
24 hr trend......16 degrees cooler.
Min humidity........41-47 percent.
24 hr trend......14 percent wetter.
20-foot winds.......Southwest winds 10 to 15 mph until 1200, then
around 20 mph. Gusts up to 35 mph.
Ridge top winds.....Southwest around 15 mph until 1200, then around
25 mph.
Chc of wetting rain.15 percent until 1200, then zero percent.
Transport winds.....Southwest around 15 mph until 1200, then around
25 mph.
Mixing Height.......1200-3200 ft agl until 1200, then 4800-6800 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good.
.Forecast days 3 through 7......
.MONDAY NIGHT...Clear. Lows in the mid 30s. Southwest winds
around 10 mph.
.TUESDAY...Clear. Lows in the mid 30s. Highs in the upper 50s.
Winds generally less than 10 mph.
.WEDNESDAY THROUGH THURSDAY...Mostly clear. Lows in the lower
40s. Highs in the mid 60s. Southwest winds around 10 mph.
.FRIDAY...Mostly clear. Chance of showers and slight chance of
thunderstorms. Lows in the lower 40s. Highs in the mid 60s.
.SATURDAY...Partly cloudy. Chance of showers in the morning, then
chance of showers and slight chance of thunderstorms in the
afternoon. Highs around 60.
$$
WYZ416-071115-
West Wind River Mountains/East Zone Bridger Teton NF-
308 AM MDT Sun Sep 6 2026
.TODAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Slight chance of showers early in the
afternoon. Chance of showers late in the
afternoon, then showers likely late in the
afternoon. Chance of showers 60 percent.
Chance of thunder...0 percent.
Max temperature.....65-70.
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 0900, then south
10 to 15 mph. Gusts up to 25 mph.
Ridge top winds.....South 15 to 20 mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....South around 15 mph until 1200, then southwest
around 25 mph.
Mixing Height.......1600-3600 ft agl until 1200, then 5800-7800 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good.
.TONIGHT...
Sky/weather.........Mostly cloudy. Showers likely in the evening.
Slight chance of thunderstorms through the
night. Showers after midnight. Chance of
precipitation 90 percent.
Chance of thunder...20 percent.
Min temperature.....40-45.
24 hr trend......3 degrees cooler.
Max humidity........91-97 percent.
24 hr trend......45 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......South winds around 10 mph with gusts to around
25 mph.
Ridge top winds.....South around 15 mph.
Chc of wetting rain.50 percent.
Transport winds.....South around 15 mph.
Mixing Height.......2000-4000 ft agl until 2400, then 600-1600 ft
agl.
Smoke dispersal.....Poor to fair.
.LABOR DAY...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Showers likely in the morning. Slight chance of
thunderstorms through the day. Slight chance of
showers in the afternoon. Chance of
precipitation 70 percent.
Chance of thunder...20 percent.
Max temperature.....52-57.
24 hr trend......13 degrees cooler.
Min humidity........40-46 percent.
24 hr trend......13 percent wetter.
20-foot winds.......Breezy. Southwest winds 15 to 20 mph with gusts
to around 35 mph until 1200, then west around
25 mph with gusts to around 45 mph.
Ridge top winds.....Southwest around 20 mph until 1200, then west
around 30 mph.
Chc of wetting rain.30 percent until 1200, then zero percent.
Transport winds.....Southwest around 20 mph until 1200, then around
30 mph.
Mixing Height.......1200-3200 ft agl until 1200, then 4800-6800 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good.
.Forecast days 3 through 7......
.MONDAY NIGHT...Mostly clear. Lows in the mid 30s. West winds
around 10 mph.
.TUESDAY THROUGH THURSDAY...Mostly clear. Lows 36 to 41. Highs
58 to 63. West winds around 10 mph.
.FRIDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the lower 40s. Highs in the lower 60s.
.SATURDAY...Partly cloudy. Chance of showers in the morning, then
chance of showers and slight chance of thunderstorms in the
afternoon. Highs in the mid 50s.
$$
WYZ288-071115-
East Wind River Mountains/South Shoshone NF-
Including the cities of Dubois and South Pass
308 AM MDT Sun Sep 6 2026
.TODAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Slight chance of showers late in the afternoon.
Chance of showers late in the afternoon. Chance
of showers 50 percent.
Chance of thunder...0 percent.
Max temperature.....70-75.
24 hr trend......1 degree cooler.
Min humidity........20-26 percent.
24 hr trend......1 percent drier.
20-foot winds.......Southwest winds 10 to 15 mph with gusts to
around 30 mph.
Ridge top winds.....Southwest 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 15 mph until 1200, then around
25 mph.
Mixing Height.......2000-4000 ft agl until 1200, then 6200-8200 ft
agl.
Smoke dispersal.....Fair to good until 1200, then very good to
excellent.
.TONIGHT...
Sky/weather.........Mostly cloudy. Slight chance of thunderstorms
early in the evening. Chance of showers through
the night. Slight chance of thunderstorms after
midnight. Chance of precipitation 50 percent.
Chance of thunder...20 percent.
Min temperature.....46-51.
24 hr trend......2 degrees cooler.
Max humidity........74-80 percent.
24 hr trend......36 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......Southwest winds 15 to 20 mph with gusts to
around 35 mph.
Ridge top winds.....Southwest around 20 mph.
Chc of wetting rain.22 percent.
Transport winds.....Southwest 20 to 25 mph.
Mixing Height.......2600-4600 ft agl until 2400, then 600-1400 ft
agl.
Smoke dispersal.....Poor to fair.
.LABOR DAY...
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...20 percent.
Max temperature.....58-63.
24 hr trend......11 degrees cooler.
Min humidity........37-43 percent.
24 hr trend......10 percent wetter.
20-foot winds.......Windy. Southwest winds around 20 mph with gusts
to around 50 mph until 0900, then 30 to 35 mph
with gusts to around 60 mph.
Ridge top winds.....Southwest 30 to 35 mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....Southwest 30 to 35 mph.
Mixing Height.......1800-3800 ft agl until 1200, then 5200-7200 ft
agl.
Smoke dispersal.....Good until 1200, then excellent.
.Forecast days 3 through 7......
.MONDAY NIGHT...Mostly clear. Lows around 40. West winds around
20 mph.
.TUESDAY THROUGH THURSDAY...Mostly clear. Lows 42 to 47. Highs
63 to 68. West winds 10 to 15 mph.
.FRIDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the mid 40s. Highs in the upper 60s.
.SATURDAY...Partly cloudy. Slight chance of showers in the
morning, then chance of showers and slight chance of
thunderstorms in the afternoon. Highs around 60.
$$
WYZ414-071115-
Salt and Wyoming Ranges/West Zone Bridger Teton NF-
Including the city of Afton
308 AM MDT Sun Sep 6 2026
.TODAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Showers likely and slight chance of
thunderstorms in the afternoon. Chance of
precipitation 70 percent.
Chance of thunder...10 percent.
Max temperature.....67-72.
24 hr trend......2 degrees cooler.
Min humidity........22-28 percent.
24 hr trend......8 percent wetter.
20-foot winds.......South winds around 10 mph with gusts to around
25 mph.
Ridge top winds.....South around 15 mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....South 15 to 20 mph.
Mixing Height.......2000-4000 ft agl until 1200, then 6600-8600 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good to
excellent.
.TONIGHT...
Sky/weather.........Cloudy then becoming partly cloudy. Showers
likely and chance of thunderstorms in the
evening, then showers and slight chance of
thunderstorms after midnight. Chance of
precipitation 90 percent.
Chance of thunder...30 percent.
Min temperature.....40-45.
24 hr trend......3 degrees cooler.
Max humidity........91-97 percent.
24 hr trend......44 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......South winds 10 to 15 mph with gusts to around
30 mph.
Ridge top winds.....South 15 to 20 mph.
Chc of wetting rain.30 percent.
Transport winds.....South 15 to 20 mph.
Mixing Height.......1800-3800 ft agl until 2400, then 600-800 ft
agl.
Smoke dispersal.....Poor to fair.
.LABOR DAY...
Sky/weather.........Partly cloudy. Showers likely in the morning.
Slight chance of thunderstorms through the day.
Slight chance of showers in the afternoon.
Chance of precipitation 70 percent.
Chance of thunder...20 percent.
Max temperature.....54-59.
24 hr trend......13 degrees cooler.
Min humidity........38-44 percent.
24 hr trend......13 percent wetter.
20-foot winds.......Southwest winds 10 to 15 mph until 1200, then
west 15 to 20 mph. Gusts up to 35 mph.
Ridge top winds.....Southwest 20 to 25 mph.
Chc of wetting rain.15 percent until 1200, then zero percent.
Transport winds.....Southwest 20 to 25 mph.
Mixing Height.......1400-3400 ft agl until 1200, then 5000-7000 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good.
.Forecast days 3 through 7......
.MONDAY NIGHT...Mostly clear. Lows in the mid 30s. Winds
generally less than 10 mph.
.TUESDAY THROUGH THURSDAY...Mostly clear. Lows 40 to 45. Highs
63 to 68. West winds around 10 mph.
.FRIDAY...Mostly clear. Slight chance of showers. Lows in the mid
40s. Highs in the upper 60s.
.SATURDAY...Partly cloudy. Chance of showers in the morning, then
chance of showers and slight chance of thunderstorms in the
afternoon. Highs in the lower 60s.
$$
WYZ278-071115-
Upper Green River Basin/Rock Springs BLM-
Including the cities of Big Piney, Farson, and Pinedale
308 AM MDT Sun Sep 6 2026
.TODAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Slight chance of showers early in the
afternoon. Chance of showers and 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......1 degree cooler.
Min humidity........19-25 percent.
24 hr trend......4 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
southwest 10 to 15 mph with gusts to around 25
mph.
Ridge top winds.....South 10 to 15 mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....South around 10 mph until 1200, then southwest
around 20 mph.
Mixing Height.......1600-3600 ft agl until 1200, then 6800-8800 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good.
.TONIGHT...
Sky/weather.........Mostly cloudy. Showers likely early in the
evening. Slight chance of thunderstorms through
the night. Chance of showers early in the
evening. Chance of precipitation 70 percent.
Chance of thunder...20 percent.
Min temperature.....44-49.
24 hr trend......1 degree warmer.
Max humidity........87-93 percent.
24 hr trend......33 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......South winds 10 to 15 mph with gusts to around
25 mph.
Ridge top winds.....South around 15 mph.
Chc of wetting rain.30 percent until 2400, then 10 percent.
Transport winds.....South around 15 mph.
Mixing Height.......2800-4800 ft agl until 2400, then 800-1400 ft
agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.LABOR DAY...
Sky/weather.........Partly cloudy. Chance of showers and slight
chance of thunderstorms in the morning. Chance
of precipitation 50 percent.
Chance of thunder...20 percent.
Max temperature.....60-65.
24 hr trend......10 degrees cooler.
Min humidity........29-35 percent.
24 hr trend......8 percent wetter.
20-foot winds.......Breezy. Southwest winds 10 to 15 mph with gusts
to around 30 mph until 1200, then west 20 to 25
mph with gusts to around 40 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.......2200-4200 ft agl until 1200, then 6600-8600 ft
agl.
Smoke dispersal.....Fair to good until 1200, then excellent.
.Forecast days 3 through 7......
.MONDAY NIGHT...Clear. Lows in the upper 30s. Northwest winds
around 10 mph.
.TUESDAY THROUGH THURSDAY...Mostly clear. Lows 39 to 44. Highs
69 to 74. West winds around 10 mph.
.FRIDAY...Mostly clear. Lows in the mid 40s. Highs in the mid
70s.
.SATURDAY...Partly cloudy. Slight chance of showers and
thunderstorms in the afternoon. Highs in the upper 60s.
$$
WYZ277-071115-
Lincoln and Uinta Counties/Lower Elevations-
Including the cities of Evanston, Fort Bridger, and Kemmerer
308 AM MDT Sun Sep 6 2026
.TODAY...
Sky/weather.........Mostly sunny then becoming mostly cloudy.
Showers likely and slight chance of
thunderstorms in the afternoon. Chance of
precipitation 70 percent.
Chance of thunder...20 percent.
Max temperature.....71-76.
24 hr trend......1 degree cooler.
Min humidity........21-27 percent.
24 hr trend......7 percent wetter.
20-foot winds.......Southwest winds 10 to 15 mph with gusts to
around 25 mph.
Ridge top winds.....Southwest 15 to 20 mph.
Chc of wetting rain.Zero percent until 1200, then 15 percent.
Transport winds.....Southwest around 15 mph until 1200, then around
25 mph.
Mixing Height.......2000-4000 ft agl until 1200, then 6600-8600 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good to
excellent.
.TONIGHT...
Sky/weather.........Cloudy then becoming partly cloudy. Chance of
showers and slight chance of thunderstorms
through the night. Chance of precipitation 50
percent.
Chance of thunder...20 percent.
Min temperature.....43-48.
24 hr trend......2 degrees cooler.
Max humidity........86-92 percent.
24 hr trend......36 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......South winds 10 to 15 mph with gusts to around
25 mph.
Ridge top winds.....South around 15 mph.
Chc of wetting rain.15 percent until 2400, then zero percent.
Transport winds.....South 15 to 20 mph.
Mixing Height.......2000-4000 ft agl until 2400, then 600-1000 ft
agl.
Smoke dispersal.....Poor to fair.
.LABOR DAY...
Sky/weather.........Partly cloudy. Chance of showers and slight
chance of thunderstorms in the morning. Chance
of precipitation 50 percent.
Chance of thunder...10 percent.
Max temperature.....61-66.
24 hr trend......9 degrees cooler.
Min humidity........28-34 percent.
24 hr trend......7 percent wetter.
20-foot winds.......Breezy. Southwest winds 15 to 20 mph until
1500, then west around 25 mph. Gusts up to 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.......2000-4000 ft agl until 1200, then 6200-8200 ft
agl.
Smoke dispersal.....Fair to good until 1200, then excellent.
.Forecast days 3 through 7......
.MONDAY NIGHT...Clear. Lows in the upper 30s. West winds around
10 mph.
.TUESDAY...Mostly clear. Lows in the lower 40s. Highs around 70.
Winds generally less than 10 mph.
.WEDNESDAY...Partly cloudy. Lows in the mid 40s. Highs in the mid
70s. Winds generally less than 10 mph.
.THURSDAY...Mostly clear. Lows in the upper 40s. Highs in the mid
70s. West winds around 10 mph.
.FRIDAY...Mostly clear. Lows in the upper 40s. Highs in the mid
70s.
.SATURDAY...Mostly sunny. Slight chance of showers and
thunderstorms in the afternoon. Highs in the upper 60s.
$$
WYZ279-071115-
Sweetwater County/Rock Springs BLM/Flaming Gorge NRA-
Including the cities of Green River, Rock Springs, and Wamsutter
308 AM MDT Sun Sep 6 2026
.TODAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Chance of showers early in the afternoon.
Slight chance of showers early in the
afternoon, then chance of showers and slight
chance of thunderstorms late in the afternoon.
Chance of precipitation 50 percent.
Chance of thunder...10 percent.
Max temperature.....72-77.
24 hr trend......1 degree cooler.
Min humidity........25-31 percent.
24 hr trend......3 percent wetter.
20-foot winds.......South winds 10 to 15 mph with gusts to around
25 mph.
Ridge top winds.....South 15 to 20 mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....Southwest 15 to 20 mph.
Mixing Height.......1600-3600 ft agl until 1200, then 6600-8600 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good.
.TONIGHT...
Sky/weather.........Mostly cloudy. Chance of showers and slight
chance of thunderstorms in the evening, then
showers likely after midnight. Chance of
precipitation 70 percent.
Chance of thunder...20 percent.
Min temperature.....48-53.
24 hr trend......1 degree warmer.
Max humidity........82-88 percent.
24 hr trend......34 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......Southwest winds around 15 mph with gusts to
around 30 mph.
Ridge top winds.....Southwest around 20 mph.
Chc of wetting rain.12 percent.
Transport winds.....Southwest around 20 mph.
Mixing Height.......2200-4200 ft agl until 2400, then 600-1400 ft
agl.
Smoke dispersal.....Poor to fair.
.LABOR DAY...
Sky/weather.........Partly cloudy. Slight chance of showers early
in the morning. Chance of showers 20 percent.
Chance of thunder...0 percent.
Max temperature.....65-70.
24 hr trend......8 degrees cooler.
Min humidity........40-46 percent.
24 hr trend......14 percent wetter.
20-foot winds.......Southwest winds 15 to 20 mph until 1500, then
west. Gusts up to 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.......2200-4200 ft agl until 1200, then 6600-8600 ft
agl.
Smoke dispersal.....Fair to good until 1200, then excellent.
.Forecast days 3 through 7......
.MONDAY NIGHT...Mostly clear. Lows in the mid 40s. West winds
around 10 mph.
.TUESDAY...Mostly clear. Lows in the mid 40s. Highs in the lower
70s. Winds generally less than 10 mph.
.WEDNESDAY...Partly cloudy. Lows around 50. Highs in the mid 70s.
Winds generally less than 10 mph.
.THURSDAY...Mostly clear. Lows around 50. Highs in the upper 70s.
West winds around 10 mph.
.FRIDAY...Mostly clear. Lows around 50. Highs in the upper 70s.
.SATURDAY...Partly cloudy. Slight chance of showers and
thunderstorms in the afternoon. Highs in the lower 70s.
$$
WYZ289-071115-
Granite/Green/Ferris/Rattlesnake Mountains-
Including the city of Jeffrey City
308 AM MDT Sun Sep 6 2026
.TODAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Slight chance of showers late in the afternoon.
Chance of showers late in the afternoon. Chance
of showers 50 percent.
Chance of thunder...0 percent.
Max temperature.....78-83.
24 hr trend......Unchanged.
Min humidity........15-21 percent.
24 hr trend......1 percent drier.
20-foot winds.......Southwest winds 10 to 15 mph with gusts to
around 25 mph.
Ridge top winds.....Southwest 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 15 to 20 mph.
Mixing Height.......1800-3800 ft agl until 1200, then 7200-9200 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good to
excellent.
.TONIGHT...
Sky/weather.........Mostly cloudy. Slight chance of thunderstorms
in the evening. Chance of showers through the
night. Chance of precipitation 50 percent.
Chance of thunder...20 percent.
Min temperature.....54-59.
24 hr trend......1 degree warmer.
Max humidity........71-77 percent.
24 hr trend......31 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......Southwest winds 15 to 20 mph. Gusts up to 30
mph until 2400, then 40 mph.
Ridge top winds.....Southwest 20 to 25 mph.
Chc of wetting rain.5 percent until 2400, then 15 percent.
Transport winds.....Southwest 20 to 25 mph.
Mixing Height.......3600-5600 ft agl until 2400, then 800-1600 ft
agl.
Smoke dispersal.....Good until 2400, then poor.
.LABOR DAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Chance of thunder...0 percent.
Max temperature.....68-73.
24 hr trend......10 degrees cooler.
Min humidity........27-33 percent.
24 hr trend......13 percent wetter.
20-foot winds.......Windy. Southwest winds 20 to 25 mph until 1200,
then around 30 mph. Gusts up to 50 mph.
Ridge top winds.....Southwest 30 to 35 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 30 to 35 mph.
Mixing Height.......2400-4400 ft agl until 1200, then 7000-9000 ft
agl.
Smoke dispersal.....Good to very good until 1200, then excellent.
.Forecast days 3 through 7......
.MONDAY NIGHT...Cooler. Mostly clear. Lows in the mid 40s. West
winds around 15 mph.
.TUESDAY...Mostly clear. Lows in the mid 40s. Highs in the lower
70s. West winds around 10 mph.
.WEDNESDAY...Partly cloudy. Lows around 50. Highs in the mid 70s.
West winds around 10 mph.
.THURSDAY...Mostly clear. Lows in the lower 50s. Highs in the
upper 70s. West winds around 10 mph.
.FRIDAY...Mostly clear. Lows in the upper 40s. Highs in the upper
70s.
.SATURDAY...Partly cloudy. Slight chance of showers in the
morning, then slight chance of showers and thunderstorms in the
afternoon. Highs in the upper 60s.
$$
WYZ300-071115-
Casper Mountain-
308 AM MDT Sun Sep 6 2026
.TODAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....79-84.
24 hr trend......1 degree warmer.
Min humidity........16-22 percent.
24 hr trend......5 percent drier.
20-foot winds.......Southwest winds around 10 mph with higher
gusts.
Ridge top winds.....Southwest around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South 15 to 20 mph.
Mixing Height.......3000-5000 ft agl until 1200, then 8800-10800 ft
agl.
Smoke dispersal.....Fair to good until 1200, then excellent.
.TONIGHT...
Sky/weather.........Partly cloudy then becoming mostly cloudy.
Slight chance of showers until early morning.
Chance of showers 20 percent.
Chance of thunder...10 percent.
Min temperature.....57-62.
24 hr trend......1 degree warmer.
Max humidity........60-66 percent.
24 hr trend......9 percent wetter.
Humidity recovery...Good.
20-foot winds.......Southwest winds 10 to 15 mph. Gusts up to 20
mph until 2400, then 35 mph.
Ridge top winds.....Southwest 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 15 to 20 mph.
Mixing Height.......3600-5600 ft agl until 2400, then 600-1000 ft
agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.LABOR DAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Chance of thunder...0 percent.
Max temperature.....70-75.
24 hr trend......10 degrees cooler.
Min humidity........31-37 percent.
24 hr trend......14 percent wetter.
20-foot winds.......Breezy. Southwest winds 20 to 25 mph with gusts
to around 40 mph.
Ridge top winds.....Southwest around 30 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 30 to 35 mph.
Mixing Height.......2600-4600 ft agl until 1200, then 7600-9600 ft
agl.
Smoke dispersal.....Good to very good until 1200, then excellent.
.Forecast days 3 through 7......
.MONDAY NIGHT...Mostly clear. Lows around 50. West winds around
10 mph.
.TUESDAY THROUGH THURSDAY...Mostly clear. Lows 47 to 52. Highs
70 to 75. Southwest winds around 10 mph.
.FRIDAY...Mostly clear. Lows around 50. Highs in the mid 70s.
.SATURDAY...Mostly sunny. Slight chance of showers in the
morning, then chance of showers and slight chance of
thunderstorms in the afternoon. Highs in the upper 60s.
$$