Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Riverton, WY
Issued by NWS Riverton, WY
690
FNUS55 KRIW 010828
FWFRIW
Fire Weather Planning Forecast for Western and Central Wyoming
National Weather Service Riverton WY
228 AM MDT Fri Aug 1 2025
.DISCUSSION...
...Yellowstone NP and Teton dispatch areas (includes fire weather
zones 140...414...415...and 416)...
Another unsettled day across much of the dispatch area as shower and
thunderstorms return this afternoon. Drier air has begun to funnel
back into the region leading to min RH values ranging from 20 to 25
percent. This drier air may lead to some dry thunderstorms and virga
showers especially across parts of zones 414 and 415. Chances for
wetting rains will be low around zero for much of the area. Winds
increase this afternoon becoming breezy around 15 mph with periodic
gusts of 20 to 25 mph. Strong gusty outflow winds cannot be ruled
out nearby developing showers or thunderstorms. Drier air will
continue to work its way farther north through the weekend. Chances
for showers and thunderstorms will persist but virga and dry
thunderstorms may become more likely.
...Cody dispatch area (includes fire weather zones 275...276...
282...283...285...286...287...288...and 289)...
Another unsettled day across much of the dispatch area as shower and
thunderstorms return this afternoon. Drier air has begun to funnel
back into the region leading to min RH values ranging from 20 to 30
percent. Chances for wetting rains will be low for much of the
dispatch area with the best chances being across portions of zones
286 and 276. Winds increase this afternoon becoming breezy around 10
mph with periodic gusts of 20 to 25 mph. Strong gusty outflow winds
of 30 to 45 mph cannot be ruled out nearby developing showers or
thunderstorms. Drier air will continue to work its way farther north
through the weekend with increased chances for elevated fire weather
conditions.
...Casper dispatch area (includes fire weather zones 277...278...
279...280...281...285...289...and 300)...
Another unsettled day across much of the dispatch area as shower and
thunderstorms return this afternoon. Drier air has begun to funnel
back into the region leading to min RH values ranging from 10 to 15
percent in southern zones and 20 to 30 percent elsewhere. This drier
air may lead to some dry thunderstorms and virga showers especially
across parts of zones 277, 278, and 279. Chances for wetting rains
will be low for much of the dispatch area with the best chances
being across portions of zones 281 and 280. Winds increase this
afternoon becoming breezy around 15 mph with periodic gusts of 20 to
25 mph. Strong gusty outflow winds of 30 to 45 mph cannot be ruled
out nearby developing showers or thunderstorms. Drier air will
continue to work its way farther north through the weekend with
increased chances for elevated fire weather conditions.
...Thunderstorms imply strong gusty and erratic winds...
WYZ280-021030-
Natrona County/Casper BLM-
Including the cities of Casper and Midwest
228 AM MDT Fri Aug 1 2025
.TODAY...
Sky/weather.........Partly cloudy. Chance of showers and slight
chance of thunderstorms in the afternoon. Some
thunderstorms may produce gusty winds, small
hail, and heavy rainfall in the afternoon.
Chance of precipitation 50 percent.
Chance of thunder...20 percent.
Max temperature.....80-85.
24 hr trend......2 degrees cooler.
Min humidity........21-27 percent.
24 hr trend......11 percent drier.
20-foot winds.......Southwest winds around 10 mph with gusts to
around 25 mph until 1500, then northwest with
gusts to around 25 mph.
Ridge top winds.....West around 15 mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....West around 15 mph.
Mixing Height.......1000-3000 ft agl until 1200, then 8400-10400 ft
agl.
Smoke dispersal.....Poor until 1200, then very good.
.TONIGHT...
Sky/weather.........Partly cloudy. Slight chance of showers and
thunderstorms early in the evening. Some
thunderstorms may produce gusty winds, small
hail, and heavy rainfall early in the evening.
Chance of precipitation 20 percent.
Chance of thunder...10 percent.
Min temperature.....55-60.
24 hr trend......1 degree cooler.
Max humidity........60-66 percent.
24 hr trend......14 percent drier.
Humidity recovery...Good.
20-foot winds.......North winds around 10 mph until 2100, then
downslope/downvalley 4-7 mph. Gusts up to 20
mph.
Ridge top winds.....Northeast around 10 mph until 2400, then
southwest.
Chc of wetting rain.Zero percent.
Transport winds.....Northeast around 15 mph until 2400, then south.
Mixing Height.......3000-5000 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.SATURDAY...
Sky/weather.........Sunny then becoming partly cloudy. Slight
chance of showers and thunderstorms in the
afternoon. Some thunderstorms may produce gusty
winds, small hail, and heavy rainfall in the
afternoon. Chance of precipitation 20 percent.
Chance of thunder...20 percent.
Max temperature.....84-89.
24 hr trend......4 degrees warmer.
Min humidity........16-22 percent.
24 hr trend......5 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
northwest around 10 mph. Gusts up to 20 mph.
Ridge top winds.....West 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 10 to 15 mph.
Mixing Height.......2800-4800 ft agl until 1200, then 7800-9800 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good.
.Forecast days 3 through 7......
.SATURDAY NIGHT...Partly cloudy. Chance of showers and slight
chance of thunderstorms in the evening. Lows in the lower 50s.
Winds generally less than 10 mph.
.SUNDAY...Mostly clear. Chance of showers and slight chance of
thunderstorms. Lows in the lower 50s. Highs in the lower 80s.
Winds generally less than 10 mph.
.MONDAY THROUGH TUESDAY...Mostly clear. Lows in the mid 50s.
Highs around 90. West winds around 10 mph.
.WEDNESDAY THROUGH THURSDAY...Mostly clear. Lows in the upper
50s. Highs 89 to 94.
$$
WYZ283-021030-
Upper Wind River Basin/Wind River Basin-
Including the cities of Crowheart, Lander, Riverton, and Shoshoni
228 AM MDT Fri Aug 1 2025
.TODAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Slight chance of showers and thunderstorms in
the afternoon. Some thunderstorms may produce
gusty winds, small hail, and heavy rainfall in
the afternoon. Chance of precipitation 20
percent.
Chance of thunder...20 percent.
Max temperature.....77-82.
24 hr trend......2 degrees cooler.
Min humidity........18-24 percent.
24 hr trend......9 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then south
around 10 mph with gusts to around 25 mph until
1500, then west with gusts to around 25 mph.
Ridge top winds.....West 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 10 to 15 mph.
Mixing Height.......1000-3000 ft agl until 1200, then 6800-8800 ft
agl.
Smoke dispersal.....Poor until 1200, then good to very good.
.TONIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....53-58.
24 hr trend......Unchanged.
Max humidity........49-55 percent.
24 hr trend......18 percent drier.
Humidity recovery...Moderate.
20-foot winds.......Northwest winds around 10 mph until 2100, then
downslope/downvalley 4-7 mph until 2400, then
southwest around 10 mph until 0300, then
downslope/downvalley 4-7 mph. Gusts up to 20
mph.
Ridge top winds.....Northwest around 10 mph until 2400, then
southwest.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 15 mph until 2400, then
southwest.
Mixing Height.......3600-5600 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.SATURDAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Slight chance of showers and thunderstorms in
the afternoon. Some thunderstorms may produce
gusty winds, small hail, and heavy rainfall in
the afternoon. Chance of precipitation 20
percent.
Chance of thunder...20 percent.
Max temperature.....81-86.
24 hr trend......4 degrees warmer.
Min humidity........19-25 percent.
24 hr trend......3 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1500, then
northwest around 10 mph. Gusts up to 20 mph.
Ridge top winds.....Southwest around 10 mph until 1200, then
northwest.
Chc of wetting rain.Less than 5 percent.
Transport winds.....Southwest 10 to 15 mph.
Mixing Height.......1600-3600 ft agl until 1200, then 6400-8400 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.Forecast days 3 through 7......
.SATURDAY NIGHT...Partly cloudy. Slight chance of showers and
thunderstorms in the evening. Lows in the lower 50s. Northwest
winds around 10 mph.
.SUNDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the mid 50s. Highs in the mid 80s. Winds
generally less than 10 mph.
.MONDAY THROUGH TUESDAY...Mostly clear. Lows in the mid 50s.
Highs 87 to 92. West winds around 10 mph.
.WEDNESDAY THROUGH THURSDAY...Mostly clear. Lows in the upper
50s. Highs 89 to 94.
$$
WYZ285-021030-
South Bighorn Mountains-
228 AM MDT Fri Aug 1 2025
.TODAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Slight chance of showers early in the
afternoon. Slight chance of thunderstorms in
the afternoon. Chance of showers late in the
afternoon. Some thunderstorms may produce gusty
winds, small hail, and heavy rainfall in the
afternoon. Chance of precipitation 50 percent.
Chance of thunder...20 percent.
Max temperature.....75-80.
24 hr trend......Unchanged.
Min humidity........24-30 percent.
24 hr trend......8 percent drier.
20-foot winds.......Southwest winds around 10 mph. Gusts up to 15
mph until 1200, then 25 mph.
Ridge top winds.....Southwest around 15 mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....Southwest around 15 mph.
Mixing Height.......800-2800 ft agl until 1200, then 7000-9000 ft
agl.
Smoke dispersal.....Poor until 1200, then good to very good.
.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. Some thunderstorms may produce
gusty winds, small hail, and heavy rainfall
early in the evening. Chance of precipitation
50 percent.
Chance of thunder...10 percent.
Min temperature.....55-60.
24 hr trend......3 degrees warmer.
Max humidity........45-51 percent.
24 hr trend......30 percent drier.
Humidity recovery...Moderate.
20-foot winds.......Northwest winds around 10 mph until 2100, then
southwest. Gusts up to 15 mph.
Ridge top winds.....Northwest around 10 mph until 2400, then
southwest.
Chc of wetting rain.Zero percent.
Transport winds.....North around 15 mph until 2400, then southwest.
Mixing Height.......2200-4200 ft agl until 2400, then 200-400 ft
agl.
Smoke dispersal.....Poor.
.SATURDAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Slight chance of showers and thunderstorms in
the afternoon. Some thunderstorms may produce
gusty winds, small hail, and heavy rainfall in
the afternoon. Chance of precipitation 20
percent.
Chance of thunder...20 percent.
Max temperature.....77-82.
24 hr trend......2 degrees warmer.
Min humidity........18-24 percent.
24 hr trend......4 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then west
around 10 mph. Gusts up to 20 mph.
Ridge top winds.....West 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 10 to 15 mph.
Mixing Height.......2400-4400 ft agl until 1200, then 7400-9400 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then good to very
good.
.Forecast days 3 through 7......
.SATURDAY NIGHT...Partly cloudy. Chance of showers and slight
chance of thunderstorms in the evening. Lows in the lower 50s.
Winds generally less than 10 mph.
.SUNDAY...Mostly clear. Chance of showers and slight chance of
thunderstorms. Lows in the mid 50s. Highs in the mid 70s. Winds
generally less than 10 mph.
.MONDAY THROUGH TUESDAY...Mostly clear. Lows in the mid 50s.
Highs 79 to 84. West winds around 10 mph.
.WEDNESDAY THROUGH THURSDAY...Mostly clear. Lows in the upper
50s. Highs 81 to 86.
$$
WYZ281-021030-
Johnson County/Casper BLM-
Including the cities of Buffalo and Kaycee
228 AM MDT Fri Aug 1 2025
.TODAY...
Sky/weather.........Partly cloudy. Slight chance of showers and
thunderstorms early in the afternoon. Chance of
showers and thunderstorms late in the
afternoon. Some thunderstorms may produce gusty
winds, small hail, and heavy rainfall in the
afternoon. Chance of precipitation 50 percent.
Chance of thunder...30 percent.
Max temperature.....77-82.
24 hr trend......Unchanged.
Min humidity........31-37 percent.
24 hr trend......3 percent drier.
20-foot winds.......South winds around 10 mph until 1200, then
upslope/upvalley 5-9 mph until 1500, then
northeast around 10 mph. Gusts up to 20 mph.
Ridge top winds.....Southeast 10 to 15 mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....South around 15 mph until 1200, then west.
Mixing Height.......600-2600 ft agl until 1200, then 5200-7200 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.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. Some thunderstorms may produce
gusty winds, small hail, and heavy rainfall
early in the evening. Chance of precipitation
50 percent.
Chance of thunder...20 percent.
Min temperature.....57-62.
24 hr trend......1 degree cooler.
Max humidity........62-68 percent.
24 hr trend......13 percent drier.
Humidity recovery...Good.
20-foot winds.......Northwest winds around 10 mph with gusts to
around 25 mph until 2100, then
downslope/downvalley 4-7 mph until 0300, then
southwest around 10 mph with gusts to around 15
mph.
Ridge top winds.....Northwest around 15 mph until 2400, then
southwest.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 10 to 15 mph.
Mixing Height.......1800-3800 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Poor.
.SATURDAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Slight chance of showers and thunderstorms in
the afternoon. Some thunderstorms may produce
gusty winds, small hail, and heavy rainfall in
the afternoon. Chance of precipitation 20
percent.
Chance of thunder...20 percent.
Max temperature.....78-83.
24 hr trend......2 degrees warmer.
Min humidity........26-32 percent.
24 hr trend......4 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then north
around 10 mph. Gusts up to 15 mph.
Ridge top winds.....West around 10 mph until 1200, then north.
Chc of wetting rain.Zero percent.
Transport winds.....West 10 to 15 mph.
Mixing Height.......1600-3600 ft agl until 1200, then 5600-7600 ft
agl.
Smoke dispersal.....Fair to good.
.Forecast days 3 through 7......
.SATURDAY NIGHT...Partly cloudy. Chance of showers and slight
chance of thunderstorms in the evening. Lows in the mid 50s.
Winds generally less than 10 mph.
.SUNDAY...Mostly clear. Chance of showers and thunderstorms. Lows
in the mid 50s. Highs in the lower 80s. Winds generally less than
10 mph.
.MONDAY THROUGH TUESDAY...Mostly clear. Lows in the upper 50s.
Highs in the upper 80s. Northwest winds around 10 mph.
.WEDNESDAY THROUGH THURSDAY...Mostly clear. Lows in the upper
50s. Highs 88 to 93.
$$
WYZ282-021030-
South Bighorn Basin/Worland BLM-
Including the cities of Ten Sleep, Thermopolis, and Worland
228 AM MDT Fri Aug 1 2025
.TODAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Slight chance of showers and thunderstorms in
the afternoon. Some thunderstorms may produce
gusty winds, small hail, and heavy rainfall in
the afternoon. Chance of precipitation 20
percent.
Chance of thunder...20 percent.
Max temperature.....78-83.
24 hr trend......1 degree cooler.
Min humidity........22-28 percent.
24 hr trend......3 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1500, then west
around 10 mph with higher gusts.
Ridge top winds.....Southeast around 10 mph until 1200, then west.
Chc of wetting rain.Zero percent.
Transport winds.....South 10 to 15 mph.
Mixing Height.......800-2800 ft agl until 1200, then 7000-9000 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.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.....54-59.
24 hr trend......2 degrees cooler.
Max humidity........56-62 percent.
24 hr trend......17 percent drier.
Humidity recovery...Moderate.
20-foot winds.......Downslope/downvalley 4-7 mph. Gusts up to 15
mph.
Ridge top winds.....North around 10 mph until 2400, then southwest.
Chc of wetting rain.Zero percent.
Transport winds.....Southeast around 10 mph until 2400, then south.
Mixing Height.......2200-4200 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Poor.
.SATURDAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Slight chance of showers and thunderstorms in
the afternoon. Some thunderstorms may produce
gusty winds, small hail, and heavy rainfall in
the afternoon. Chance of precipitation 20
percent.
Chance of thunder...20 percent.
Max temperature.....80-85.
24 hr trend......3 degrees warmer.
Min humidity........20-26 percent.
24 hr trend......3 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1500, then
northwest around 10 mph with higher gusts.
Ridge top winds.....Northwest around 10 mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....South around 10 mph until 1200, then west.
Mixing Height.......1000-3000 ft agl until 1200, then 6800-8800 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.Forecast days 3 through 7......
.SATURDAY NIGHT...Partly cloudy. Slight chance of showers and
thunderstorms in the evening. Lows in the mid 50s. Winds
generally less than 10 mph.
.SUNDAY...Mostly clear. Chance of showers and slight chance of
thunderstorms. Lows in the upper 50s. Highs in the mid 80s. Winds
generally less than 10 mph.
.MONDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the upper 50s. Highs in the lower 90s.
South winds around 10 mph.
.TUESDAY...Mostly clear. Lows in the upper 50s. Highs in the
upper 80s. West winds around 10 mph.
.WEDNESDAY THROUGH THURSDAY...Mostly clear. Lows in the upper
50s. Highs 90 to 95.
$$
WYZ275-021030-
North Bighorn Basin/Worland BLM-
Including the cities of Greybull, Lovell, and Powell
228 AM MDT Fri Aug 1 2025
.TODAY...
Sky/weather.........Partly cloudy. Slight chance of showers and
thunderstorms early in the afternoon. Chance of
showers and thunderstorms late in the
afternoon, then slight chance of showers and
thunderstorms late in the afternoon. Some
thunderstorms may produce gusty winds, small
hail, and heavy rainfall in the afternoon.
Chance of precipitation 50 percent.
Chance of thunder...30 percent.
Max temperature.....76-81.
24 hr trend......1 degree cooler.
Min humidity........22-28 percent.
24 hr trend......3 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1500, then
southwest around 10 mph with gusts to around 25
mph.
Ridge top winds.....South 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southeast around 10 mph until 1200, then
southwest.
Mixing Height.......1000-3000 ft agl until 1200, then 6600-8600 ft
agl.
Smoke dispersal.....Poor until 1200, then good to very good.
.TONIGHT...
Sky/weather.........Partly cloudy. Slight chance of showers and
thunderstorms early in the evening. Some
thunderstorms may produce gusty winds, small
hail, and heavy rainfall early in the evening.
Chance of precipitation 20 percent.
Chance of thunder...10 percent.
Min temperature.....53-58.
24 hr trend......2 degrees cooler.
Max humidity........55-61 percent.
24 hr trend......9 percent drier.
Humidity recovery...Moderate.
20-foot winds.......Downslope/downvalley 4-7 mph. Gusts up to 15
mph.
Ridge top winds.....West around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South around 10 mph.
Mixing Height.......1800-3800 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Poor.
.SATURDAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Slight chance of showers and thunderstorms in
the afternoon. Some thunderstorms may produce
gusty winds, small hail, and heavy rainfall in
the afternoon. Chance of precipitation 20
percent.
Chance of thunder...20 percent.
Max temperature.....77-82.
24 hr trend......2 degrees warmer.
Min humidity........19-25 percent.
24 hr trend......1 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1500, then
northwest around 10 mph with higher gusts.
Ridge top winds.....Northwest around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 10 to 15 mph.
Mixing Height.......1200-3200 ft agl until 1200, then 5800-7800 ft
agl.
Smoke dispersal.....Poor until 1200, then fair to good.
.Forecast days 3 through 7......
.SATURDAY NIGHT...Partly cloudy. Slight chance of showers and
thunderstorms in the evening. Lows in the upper 50s. Northwest
winds around 10 mph.
.SUNDAY...Mostly clear. Chance of showers and slight chance of
thunderstorms. Lows in the upper 50s. Highs in the mid 80s. Winds
generally less than 10 mph.
.MONDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the upper 50s. Highs in the lower 90s.
South winds around 10 mph.
.TUESDAY...Mostly clear. Lows in the upper 50s. Highs in the
upper 80s. Northwest winds around 10 mph.
.WEDNESDAY...Mostly clear. Lows in the upper 50s. Highs in the
lower 90s.
.THURSDAY...Partly cloudy. Highs in the upper 80s.
$$
WYZ276-021030-
Cody Foothills-
Including the cities of Clark, Cody, and Meeteetse
228 AM MDT Fri Aug 1 2025
.TODAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Slight chance of showers in the morning. Chance
of showers and thunderstorms in the afternoon.
Some thunderstorms may produce gusty winds,
small hail, and heavy rainfall early in the
afternoon. Some thunderstorms may produce gusty
winds, small hail, and heavy rainfall late in
the afternoon. Chance of precipitation 50
percent.
Chance of thunder...30 percent.
Max temperature.....74-79.
24 hr trend......Unchanged.
Min humidity........27-33 percent.
24 hr trend......4 percent drier.
20-foot winds.......Southwest winds around 10 mph until 0900, then
upslope/upvalley 5-9 mph until 1500, then
southeast around 10 mph. Gusts up to 20 mph.
Ridge top winds.....Southwest around 10 mph until 1200, then
southeast.
Chc of wetting rain.Zero percent until 1200, then 10 percent.
Transport winds.....Southwest 10 to 15 mph.
Mixing Height.......2000-4000 ft agl until 1200, then 6400-8400 ft
agl.
Smoke dispersal.....Poor until 1200, then good to very good.
.TONIGHT...
Sky/weather.........Partly cloudy. Slight chance of showers and
thunderstorms early in the evening. Some
thunderstorms may produce gusty winds, small
hail, and heavy rainfall early in the evening.
Chance of precipitation 20 percent.
Chance of thunder...10 percent.
Min temperature.....54-59.
24 hr trend......Unchanged.
Max humidity........48-54 percent.
24 hr trend......14 percent drier.
Humidity recovery...Moderate.
20-foot winds.......Downslope/downvalley 4-7 mph until 2100, then
west around 10 mph. Gusts up to 15 mph.
Ridge top winds.....Southwest 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 10 to 15 mph.
Mixing Height.......1800-3800 ft agl until 2400, then 600-1000 ft
agl.
Smoke dispersal.....Poor.
.SATURDAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Slight chance of thunderstorms early in the
afternoon. Chance of showers in the afternoon.
Chance of thunderstorms late in the afternoon.
Some thunderstorms may produce gusty winds,
small hail, and heavy rainfall early in the
afternoon. Some thunderstorms may produce gusty
winds, small hail, and heavy rainfall late in
the afternoon. Chance of precipitation 50
percent.
Chance of thunder...30 percent.
Max temperature.....76-81.
24 hr trend......2 degrees warmer.
Min humidity........25-31 percent.
24 hr trend......Unchanged.
20-foot winds.......Upslope/upvalley 5-9 mph until 1500, then
northwest around 10 mph. Gusts up to 15 mph.
Ridge top winds.....Northwest around 10 mph until 1200, then north.
Chc of wetting rain.Zero percent until 1200, then 25 percent.
Transport winds.....West around 10 mph until 1200, then southwest.
Mixing Height.......1800-3800 ft agl until 1200, then 4000-6000 ft
agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.SATURDAY NIGHT...Partly cloudy. Slight chance of showers and
thunderstorms in the evening. Lows in the mid 50s. West winds
around 10 mph.
.SUNDAY...Mostly clear. Chance of showers and thunderstorms. Lows
in the mid 50s. Highs in the upper 70s. Winds generally less than
10 mph.
.MONDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows in the mid 50s. Highs in the mid 80s.
Southwest winds around 10 mph.
.TUESDAY...Mostly clear. Lows in the mid 50s. Highs in the lower
80s. West winds around 10 mph.
.WEDNESDAY...Mostly clear. Lows in the upper 50s. Highs in the
upper 80s.
.THURSDAY...Partly cloudy. Highs in the mid 80s.
$$
WYZ287-021030-
Owl Creek Mountains-
228 AM MDT Fri Aug 1 2025
.TODAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Slight chance of showers early in the
afternoon. Slight chance of thunderstorms in
the afternoon. Chance of showers early in the
afternoon. Some thunderstorms may produce gusty
winds, small hail, and heavy rainfall in the
afternoon. Chance of precipitation 50 percent.
Chance of thunder...20 percent.
Max temperature.....74-79.
24 hr trend......1 degree cooler.
Min humidity........22-28 percent.
24 hr trend......9 percent drier.
20-foot winds.......Southwest winds around 10 mph with gusts to
around 25 mph.
Ridge top winds.....Southwest around 15 mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....Southwest around 15 mph.
Mixing Height.......1400-3400 ft agl until 1200, then 7000-9000 ft
agl.
Smoke dispersal.....Poor until 1200, then good to very good.
.TONIGHT...
Sky/weather.........Partly cloudy. Slight chance of showers and
thunderstorms early in the evening. Some
thunderstorms may produce gusty winds, small
hail, and heavy rainfall early in the evening.
Chance of precipitation 20 percent.
Chance of thunder...10 percent.
Min temperature.....54-59.
24 hr trend......1 degree warmer.
Max humidity........44-50 percent.
24 hr trend......23 percent drier.
Humidity recovery...Moderate.
20-foot winds.......West winds around 10 mph until 2400, then
southwest. Gusts up to 20 mph.
Ridge top winds.....West 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 15 mph.
Mixing Height.......2400-4400 ft agl until 2400, then 200-600 ft
agl.
Smoke dispersal.....Poor to fair.
.SATURDAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Slight chance of thunderstorms early in the
afternoon. Chance of showers in the afternoon.
Chance of thunderstorms late in the afternoon.
Some thunderstorms may produce gusty winds,
small hail, and heavy rainfall early in the
afternoon. Some thunderstorms may produce gusty
winds, small hail, and heavy rainfall late in
the afternoon. Chance of precipitation 50
percent.
Chance of thunder...30 percent.
Max temperature.....74-79.
24 hr trend......2 degrees warmer.
Min humidity........21-27 percent.
24 hr trend......Unchanged.
20-foot winds.......Upslope/upvalley 5-9 mph until 1500, then
northwest around 10 mph with higher gusts.
Ridge top winds.....West around 10 mph until 1200, then northwest.
Chc of wetting rain.Zero percent until 1200, then 20 percent.
Transport winds.....Southwest 10 to 15 mph.
Mixing Height.......1200-3200 ft agl until 1200, then 5200-7200 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.Forecast days 3 through 7......
.SATURDAY NIGHT...Partly cloudy. Slight chance of showers and
thunderstorms in the evening. Lows in the lower 50s. Northwest
winds around 10 mph.
.SUNDAY...Mostly clear. Chance of showers and slight chance of
thunderstorms. Lows in the mid 50s. Highs in the upper 70s. Winds
generally less than 10 mph.
.MONDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the mid 50s. Highs in the mid 80s.
Southwest winds around 10 mph.
.TUESDAY...Mostly clear. Lows in the mid 50s. Highs in the lower
80s. West winds around 10 mph.
.WEDNESDAY THROUGH THURSDAY...Mostly clear. Lows in the upper
50s. Highs 83 to 88.
$$
WYZ286-021030-
Absaroka Mountains/North Shoshone NF-
Including the city of Pahaska
228 AM MDT Fri Aug 1 2025
.TODAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Slight chance of showers in the morning.
Showers likely and chance of thunderstorms in
the afternoon. Some thunderstorms may produce
gusty winds, small hail, and heavy rainfall
early in the afternoon. Some thunderstorms may
produce gusty winds, small hail, and heavy
rainfall in the afternoon. Chance of
precipitation 70 percent.
Chance of thunder...30 percent.
Max temperature.....68-73.
24 hr trend......1 degree cooler.
Min humidity........27-33 percent.
24 hr trend......11 percent drier.
20-foot winds.......West winds 10 to 15 mph. Gusts up to 20 mph
until 1200, then 30 mph.
Ridge top winds.....Southwest 15 to 20 mph.
Chc of wetting rain.Zero percent until 1200, then 10 percent.
Transport winds.....Southwest 15 to 20 mph.
Mixing Height.......3800-5800 ft agl until 1200, then 9000-11000 ft
agl.
Smoke dispersal.....Fair to good until 1200, then excellent.
.TONIGHT...
Sky/weather.........Partly cloudy. Slight chance of showers and
thunderstorms early in the evening. Some
thunderstorms may produce gusty winds, small
hail, and heavy rainfall early in the evening.
Chance of precipitation 20 percent.
Chance of thunder...20 percent.
Min temperature.....47-52.
24 hr trend......1 degree warmer.
Max humidity........56-62 percent.
24 hr trend......27 percent drier.
Humidity recovery...Moderate.
20-foot winds.......West winds 10 to 15 mph with gusts to around 25
mph.
Ridge top winds.....West around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 15 mph.
Mixing Height.......3800-5800 ft agl until 2400, then 400-1000 ft
agl.
Smoke dispersal.....Good until 2400, then poor.
.SATURDAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Chance of showers and thunderstorms in the
afternoon. Some thunderstorms may produce gusty
winds, small hail, and heavy rainfall in the
afternoon. Chance of precipitation 50 percent.
Chance of thunder...40 percent.
Max temperature.....69-74.
24 hr trend......1 degree warmer.
Min humidity........26-32 percent.
24 hr trend......Unchanged.
20-foot winds.......West winds 10 to 15 mph with gusts to around 25
mph.
Ridge top winds.....West around 15 mph.
Chc of wetting rain.Zero percent until 1200, then 30 percent.
Transport winds.....West 15 to 20 mph.
Mixing Height.......2800-4800 ft agl until 1200, then 5800-7800 ft
agl.
Smoke dispersal.....Fair to good until 1200, then very good.
.Forecast days 3 through 7......
.SATURDAY NIGHT...Partly cloudy. Chance of showers and slight
chance of thunderstorms in the evening. Lows in the mid 40s.
Winds generally less than 10 mph.
.SUNDAY...Mostly clear. Chance of showers and thunderstorms. Lows
in the upper 40s. Highs in the upper 60s. Winds generally less
than 10 mph.
.MONDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows in the upper 40s. Highs in the lower 70s.
Southwest winds around 10 mph.
.TUESDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the upper 40s. Highs around 70. West winds
around 15 mph.
.WEDNESDAY...Mostly clear. Lows around 50. Highs in the mid 70s.
.THURSDAY...Partly cloudy. Highs in the lower 70s.
$$
WYZ140-021030-
Yellowstone National Park-
Including the cities of Lake, Mammoth, and Old Faithful
228 AM MDT Fri Aug 1 2025
.TODAY...
Sky/weather.........Mostly sunny. Chance of showers and slight
chance of thunderstorms in the afternoon. Some
thunderstorms may produce gusty winds, small
hail, and heavy rainfall in the afternoon.
Chance of precipitation 50 percent.
Chance of thunder...20 percent.
Max temperature.....70-75.
24 hr trend......5 degrees cooler.
Min humidity........21-27 percent.
24 hr trend......2 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then
southwest 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.....South around 15 mph until 1200, then southwest
around 25 mph.
Mixing Height.......3400-5400 ft agl until 1200, then 10000-12000
ft agl.
Smoke dispersal.....Good until 1200, then excellent.
.TONIGHT...
Sky/weather.........Mostly clear. Slight chance of showers and
thunderstorms early in the evening. Some
thunderstorms may produce gusty winds, small
hail, and heavy rainfall early in the evening.
Chance of precipitation 20 percent.
Chance of thunder...20 percent.
Min temperature.....42-47.
24 hr trend......Unchanged.
Max humidity........65-71 percent.
24 hr trend......6 percent drier.
Humidity recovery...Good.
20-foot winds.......Southwest winds around 15 mph with gusts to
around 25 mph until 2100, then
downslope/downvalley 4-7 mph.
Ridge top winds.....Southwest 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 10 to 15 mph.
Mixing Height.......4400-6400 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Very good until 2400, then poor.
.SATURDAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Chance of showers and thunderstorms in the
afternoon. Some thunderstorms may produce gusty
winds, small hail, and heavy rainfall in the
afternoon. Chance of precipitation 50 percent.
Chance of thunder...30 percent.
Max temperature.....72-77.
24 hr trend......1 degree warmer.
Min humidity........28-34 percent.
24 hr trend......1 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.....Southwest 10 to 15 mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....Southwest around 10 mph until 1200, then west
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 and slight
chance of thunderstorms in the evening. Lows in the lower 40s.
Winds generally less than 10 mph.
.SUNDAY...Mostly clear. Chance of showers and thunderstorms. Lows
in the lower 40s. Highs around 70. Winds generally less than
10 mph.
.MONDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows in the lower 40s. Highs in the mid 70s. South
winds around 10 mph.
.TUESDAY...Mostly clear. Lows in the lower 40s. Highs in the
upper 60s. Southwest winds around 10 mph.
.WEDNESDAY...Mostly clear. Lows in the mid 40s. Highs in the mid
70s.
.THURSDAY...Partly cloudy. Highs in the lower 70s.
$$
WYZ415-021030-
North Zone Bridger Teton NF and Grand Teton NP-
Including the cities of Jackson and Moran
228 AM MDT Fri Aug 1 2025
.TODAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Chance of showers and slight chance of
thunderstorms in the afternoon. Some
thunderstorms may produce gusty winds, small
hail, and heavy rainfall in the afternoon.
Chance of precipitation 50 percent.
Chance of thunder...20 percent.
Max temperature.....70-75.
24 hr trend......6 degrees cooler.
Min humidity........22-28 percent.
24 hr trend......2 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then west
around 15 mph with gusts to around 30 mph.
Ridge top winds.....South 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.......3200-5200 ft agl until 1200, then 10400-12400
ft agl.
Smoke dispersal.....Fair to good until 1200, then excellent.
.TONIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....45-50.
24 hr trend......Unchanged.
Max humidity........61-67 percent.
24 hr trend......10 percent drier.
Humidity recovery...Good.
20-foot winds.......West winds around 10 mph with gusts to around
25 mph until 2100, then downslope/downvalley
4-7 mph.
Ridge top winds.....Southwest 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.......4600-6600 ft agl until 2400, then 400-1000 ft
agl.
Smoke dispersal.....Very good until 2400, then poor.
.SATURDAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Slight chance of thunderstorms early in the
afternoon. Chance of showers in the afternoon.
Chance of thunderstorms late in the afternoon.
Some thunderstorms may produce gusty winds,
small hail, and heavy rainfall early in the
afternoon. Some thunderstorms may produce gusty
winds, small hail, and heavy rainfall late in
the afternoon. Chance of precipitation 50
percent.
Chance of thunder...30 percent.
Max temperature.....71-76.
24 hr trend......2 degrees warmer.
Min humidity........26-32 percent.
24 hr trend......Unchanged.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then west
around 10 mph. Gusts up to 20 mph.
Ridge top winds.....South around 10 mph until 1200, then west.
Chc of wetting rain.Less than 5 percent.
Transport winds.....South around 10 mph until 1200, then west
around 20 mph.
Mixing Height.......2400-4400 ft agl until 1200, then 7000-9000 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good.
.Forecast days 3 through 7......
.SATURDAY NIGHT...Mostly clear. Slight chance of showers and
thunderstorms in the evening. Lows in the lower 40s. Winds
generally less than 10 mph.
.SUNDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the mid 40s. Highs in the lower 70s. Winds
generally less than 10 mph.
.MONDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows in the lower 40s. Highs in the mid 70s.
Southwest winds around 10 mph.
.TUESDAY...Mostly clear. Lows in the mid 40s. Highs around 70.
Southwest winds around 10 mph.
.WEDNESDAY THROUGH THURSDAY...Mostly clear. Lows in the mid 40s.
Highs 73 to 78.
$$
WYZ416-021030-
West Wind River Mountains/East Zone Bridger Teton NF-
228 AM MDT Fri Aug 1 2025
.TODAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Slight chance of showers in the morning. Chance
of showers and slight chance of thunderstorms
in the afternoon. Some thunderstorms may
produce gusty winds, small hail, and heavy
rainfall in the afternoon. Chance of
precipitation 50 percent.
Chance of thunder...20 percent.
Max temperature.....66-71.
24 hr trend......6 degrees cooler.
Min humidity........19-25 percent.
24 hr trend......1 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then
southwest 10 to 15 mph with gusts to around 30
mph.
Ridge top winds.....South 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 west
around 20 mph.
Mixing Height.......3800-5800 ft agl until 1200, then 10400-12400
ft agl.
Smoke dispersal.....Good until 1200, then excellent.
.TONIGHT...
Sky/weather.........Mostly clear. Slight chance of showers early in
the evening. Chance of showers 20 percent.
Chance of thunder...0 percent.
Min temperature.....44-49.
24 hr trend......Unchanged.
Max humidity........49-55 percent.
24 hr trend......8 percent drier.
Humidity recovery...Moderate.
20-foot winds.......West winds around 10 mph with gusts to around
25 mph until 2100, then north with gusts to
around 25 mph until 2400, 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.....Northwest around 15 mph until 2400, then east.
Mixing Height.......4000-6000 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Good until 2400, then poor.
.SATURDAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Slight chance of thunderstorms early in the
afternoon. Chance of showers in the afternoon.
Chance of thunderstorms late in the afternoon.
Some thunderstorms may produce gusty winds,
small hail, and heavy rainfall early in the
afternoon. Some thunderstorms may produce gusty
winds, small hail, and heavy rainfall late in
the afternoon. Chance of precipitation 50
percent.
Chance of thunder...30 percent.
Max temperature.....67-72.
24 hr trend......2 degrees warmer.
Min humidity........21-27 percent.
24 hr trend......Unchanged.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then west
10 to 15 mph. Gusts up to 25 mph.
Ridge top winds.....South around 10 mph until 1200, then west.
Chc of wetting rain.Zero percent until 1200, then 10 percent.
Transport winds.....South around 10 mph until 1200, then southwest
around 20 mph.
Mixing Height.......3200-5200 ft agl until 1200, then 6600-8600 ft
agl.
Smoke dispersal.....Fair to good until 1200, then very good.
.Forecast days 3 through 7......
.SATURDAY NIGHT...Mostly clear. Slight chance of showers and
thunderstorms in the evening. Lows in the lower 40s. Winds
generally less than 10 mph.
.SUNDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the mid 40s. Highs in the upper 60s.
Northwest winds around 10 mph.
.MONDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the lower 40s. Highs in the lower 70s.
Southwest winds around 10 mph.
.TUESDAY...Mostly clear. Lows in the mid 40s. Highs around 70.
West winds around 10 mph.
.WEDNESDAY THROUGH THURSDAY...Mostly clear. Lows in the mid 40s.
Highs 71 to 76.
$$
WYZ288-021030-
East Wind River Mountains/South Shoshone NF-
Including the cities of Dubois and South Pass
228 AM MDT Fri Aug 1 2025
.TODAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Slight chance of showers in the morning. Chance
of showers and slight chance of thunderstorms
in the afternoon. Some thunderstorms may
produce gusty winds, small hail, and heavy
rainfall in the afternoon. Chance of
precipitation 50 percent.
Chance of thunder...20 percent.
Max temperature.....71-76.
24 hr trend......3 degrees cooler.
Min humidity........17-23 percent.
24 hr trend......5 percent drier.
20-foot winds.......Southwest winds 10 to 15 mph. Gusts up to 20
mph until 1200, then 30 mph.
Ridge top winds.....Southwest 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 15 to 20 mph.
Mixing Height.......3800-5800 ft agl until 1200, then 10600-12600
ft agl.
Smoke dispersal.....Fair to good until 1200, then excellent.
.TONIGHT...
Sky/weather.........Mostly clear. Slight chance of showers early in
the evening. Chance of showers 20 percent.
Chance of thunder...0 percent.
Min temperature.....49-54.
24 hr trend......2 degrees warmer.
Max humidity........40-46 percent.
24 hr trend......30 percent drier.
Humidity recovery...Moderate.
20-foot winds.......West winds around 10 mph. Gusts up to 25 mph
until 2400, then 15 mph.
Ridge top winds.....West around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 15 mph.
Mixing Height.......4200-6200 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Good to very good until 2400, then poor.
.SATURDAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Chance of showers and slight chance of
thunderstorms in the afternoon. Some
thunderstorms may produce gusty winds, small
hail, and heavy rainfall in the afternoon.
Chance of precipitation 50 percent.
Chance of thunder...20 percent.
Max temperature.....71-76.
24 hr trend......1 degree warmer.
Min humidity........19-25 percent.
24 hr trend......Unchanged.
20-foot winds.......Southwest winds around 10 mph until 0900, then
upslope/upvalley 5-9 mph until 1200, then west
around 10 mph. Gusts up to 25 mph.
Ridge top winds.....West 10 to 15 mph.
Chc of wetting rain.Zero percent until 1200, then 15 percent.
Transport winds.....Southwest 15 to 20 mph.
Mixing Height.......3400-5400 ft agl until 1200, then 7200-9200 ft
agl.
Smoke dispersal.....Fair to good until 1200, then very good.
.Forecast days 3 through 7......
.SATURDAY NIGHT...Partly cloudy. Slight chance of showers and
thunderstorms in the evening. Lows in the upper 40s. West winds
around 10 mph.
.SUNDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the upper 40s. Highs in the lower 70s.
West winds around 10 mph.
.MONDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows around 50. Highs in the mid 70s. Southwest
winds around 10 mph.
.TUESDAY...Mostly clear. Lows in the lower 50s. Highs in the mid
70s. West winds around 15 mph.
.WEDNESDAY THROUGH THURSDAY...Mostly clear. Lows in the lower
50s. Highs in the upper 70s.
$$
WYZ414-021030-
Salt and Wyoming Ranges/West Zone Bridger Teton NF-
Including the city of Afton
228 AM MDT Fri Aug 1 2025
.TODAY...
Sky/weather.........Mostly sunny. Slight chance of showers and
thunderstorms in the afternoon. Some
thunderstorms may produce gusty winds, small
hail, and heavy rainfall in the afternoon.
Chance of precipitation 20 percent.
Chance of thunder...20 percent.
Max temperature.....70-75.
24 hr trend......5 degrees cooler.
Min humidity........18-24 percent.
24 hr trend......4 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then west
10 to 15 mph. Gusts up to 25 mph.
Ridge top winds.....Southwest 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 west
around 20 mph.
Mixing Height.......4000-6000 ft agl until 1200, then 11200-13200
ft agl.
Smoke dispersal.....Fair to good until 1200, then excellent.
.TONIGHT...
Sky/weather.........Mostly clear. Slight chance of showers early in
the evening. Chance of showers 20 percent.
Chance of thunder...0 percent.
Min temperature.....44-49.
24 hr trend......Unchanged.
Max humidity........58-64 percent.
24 hr trend......4 percent drier.
Humidity recovery...Good.
20-foot winds.......West winds around 10 mph and gusty until 2100,
then downslope/downvalley 4-7 mph.
Ridge top winds.....Northwest around 15 mph until 2400, then
southeast.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 15 mph until 2400, then
southeast.
Mixing Height.......4800-6800 ft agl until 2400, then 400-1000 ft
agl.
Smoke dispersal.....Good until 2400, then poor.
.SATURDAY...
Sky/weather.........Partly cloudy. Chance of showers and slight
chance of thunderstorms in the afternoon. Some
thunderstorms may produce gusty winds, small
hail, and heavy rainfall in the afternoon.
Chance of precipitation 40 percent.
Chance of thunder...20 percent.
Max temperature.....71-76.
24 hr trend......1 degree warmer.
Min humidity........19-25 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.......2800-4800 ft agl until 1200, then 8200-10200 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good to
excellent.
.Forecast days 3 through 7......
.SATURDAY NIGHT...Mostly clear. Lows in the mid 40s. Winds
generally less than 10 mph.
.SUNDAY...Mostly clear. Lows in the upper 40s. Highs in the lower
70s. Winds generally less than 10 mph.
.MONDAY THROUGH TUESDAY...Mostly clear. Lows 44 to 49. Highs
73 to 78. West winds around 10 mph.
.WEDNESDAY THROUGH THURSDAY...Mostly clear. Lows in the upper
40s. Highs 75 to 80.
$$
WYZ277>279-021030-
Lincoln and Uinta Counties/Lower Elevations-
Upper Green River Basin/Rock Springs BLM-
Sweetwater County/Rock Springs BLM/Flaming Gorge NRA-
Including the cities of Evanston, Fort Bridger, Kemmerer,
Big Piney, Farson, Pinedale, Green River, Rock Springs,
and Wamsutter
228 AM MDT Fri Aug 1 2025
.TODAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Slight chance of showers and thunderstorms in
the afternoon. Some thunderstorms may produce
gusty winds, small hail, and heavy rainfall in
the afternoon. Chance of precipitation 20
percent.
Chance of thunder...10 percent.
Max temperature.....74-79.
24 hr trend......3 degrees cooler.
Min humidity........16-22 percent.
24 hr trend......1 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then west
10 to 15 mph. Gusts up to 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.......3200-5200 ft agl until 1200, then 12400-14400
ft agl.
Smoke dispersal.....Fair to good until 1200, then excellent.
.TONIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....47-52.
24 hr trend......2 degrees cooler.
Max humidity........49-55 percent.
24 hr trend......12 percent drier.
Humidity recovery...Moderate.
20-foot winds.......West winds around 10 mph with gusts to around
25 mph until 2100, then north with gusts to
around 25 mph until 2400, 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.....Northwest around 15 mph until 2400, then east.
Mixing Height.......6000-8000 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Very good until 2400, then poor.
.SATURDAY...
Sky/weather.........Partly cloudy. Slight chance of showers and
thunderstorms in the afternoon. Some
thunderstorms may produce gusty winds, small
hail, and heavy rainfall in the afternoon.
Chance of precipitation 20 percent.
Chance of thunder...20 percent.
Max temperature.....75-80.
24 hr trend......2 degrees warmer.
Min humidity........19-25 percent.
24 hr trend......2 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then west
10 to 15 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.......3200-5200 ft agl until 1200, then 10000-12000
ft agl.
Smoke dispersal.....Poor to fair until 1200, then excellent.
.Forecast days 3 through 7......
.SATURDAY NIGHT...Mostly clear. Lows in the mid 40s. Winds
generally less than 10 mph.
.SUNDAY...Mostly clear. Lows in the upper 40s. Highs in the lower
80s. Winds generally less than 10 mph.
.MONDAY THROUGH TUESDAY...Mostly clear. Lows in the upper 40s.
Highs 82 to 87. West winds around 10 mph.
.WEDNESDAY THROUGH THURSDAY...Mostly clear. Lows in the lower
50s. Highs in the mid 80s.
$$
WYZ289-021030-
Granite/Green/Ferris/Rattlesnake Mountains-
Including the city of Jeffrey City
228 AM MDT Fri Aug 1 2025
.TODAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Slight chance of showers and thunderstorms
early in the afternoon. Some thunderstorms may
produce gusty winds, small hail, and heavy
rainfall early in the afternoon. Chance of
precipitation 20 percent.
Chance of thunder...10 percent.
Max temperature.....75-80.
24 hr trend......2 degrees cooler.
Min humidity........13-19 percent.
24 hr trend......4 percent drier.
20-foot winds.......Southwest winds 10 to 15 mph with gusts to
around 30 mph until 1500, then west with gusts
to around 30 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 12000-14000
ft agl.
Smoke dispersal.....Poor to fair until 1200, then excellent.
.TONIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....53-58.
24 hr trend......Unchanged.
Max humidity........46-52 percent.
24 hr trend......19 percent drier.
Humidity recovery...Moderate.
20-foot winds.......Northwest winds around 10 mph until 2100, then
northeast until 2400, then downslope/downvalley
4-7 mph. Gusts up to 20 mph.
Ridge top winds.....North around 15 mph until 2400, then southeast.
Chc of wetting rain.Zero percent.
Transport winds.....North around 15 mph until 2400, then southeast.
Mixing Height.......4800-6800 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Good to very good until 2400, then poor.
.SATURDAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Chance of showers and slight chance of
thunderstorms in the afternoon. Some
thunderstorms may produce gusty winds, small
hail, and heavy rainfall in the afternoon.
Chance of precipitation 30 percent.
Chance of thunder...20 percent.
Max temperature.....79-84.
24 hr trend......2 degrees warmer.
Min humidity........13-19 percent.
24 hr trend......1 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then west
around 10 mph with gusts to around 25 mph.
Ridge top winds.....Southwest 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South around 10 mph until 1200, then west
around 20 mph.
Mixing Height.......3000-5000 ft agl until 1200, then 10200-12200
ft agl.
Smoke dispersal.....Poor to fair until 1200, then excellent.
.Forecast days 3 through 7......
.SATURDAY NIGHT...Partly cloudy. Slight chance of showers and
thunderstorms in the evening. Lows in the lower 50s. Winds
generally less than 10 mph.
.SUNDAY...Clear. Slight chance of showers and thunderstorms. Lows
in the lower 50s. Highs around 80. Northwest winds around 10 mph.
.MONDAY THROUGH TUESDAY...Mostly clear. Lows in the mid 50s.
Highs 83 to 88. West winds around 10 mph.
.WEDNESDAY THROUGH THURSDAY...Mostly clear. Lows in the mid 50s.
Highs 85 to 90.
$$
WYZ300-021030-
Casper Mountain-
228 AM MDT Fri Aug 1 2025
.TODAY...
Sky/weather.........Partly cloudy. Chance of showers and slight
chance of thunderstorms in the afternoon. Some
thunderstorms may produce gusty winds, small
hail, and heavy rainfall in the afternoon.
Chance of precipitation 50 percent.
Chance of thunder...20 percent.
Max temperature.....73-78.
24 hr trend......4 degrees cooler.
Min humidity........23-29 percent.
24 hr trend......8 percent drier.
20-foot winds.......South winds around 10 mph until 1200. North
after 1500. Gusts up to 20 mph.
Ridge top winds.....South around 15 mph until 1200, then west.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 15 to 20 mph.
Mixing Height.......2000-4000 ft agl until 1200, then 10200-12200
ft agl.
Smoke dispersal.....Poor to fair until 1200, then excellent.
.TONIGHT...
Sky/weather.........Partly cloudy then becoming clear. Slight
chance of showers and thunderstorms early in
the evening. Some thunderstorms may produce
gusty winds, small hail, and heavy rainfall
early in the evening. Chance of precipitation
20 percent.
Chance of thunder...10 percent.
Min temperature.....55-60.
24 hr trend......1 degree warmer.
Max humidity........53-59 percent.
24 hr trend......14 percent drier.
Humidity recovery...Moderate.
20-foot winds.......East winds around 10 mph until 2400, then
southeast. Gusts up to 15 mph.
Ridge top winds.....Southeast around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....East around 15 mph until 2400, then south.
Mixing Height.......2400-4400 ft agl until 2400, then 200-400 ft
agl.
Smoke dispersal.....Poor to fair until 2400, then poor.
.SATURDAY...
Sky/weather.........Sunny then becoming partly cloudy. Slight
chance of showers and thunderstorms in the
afternoon. Some thunderstorms may produce gusty
winds, small hail, and heavy rainfall in the
afternoon. Chance of precipitation 20 percent.
Chance of thunder...20 percent.
Max temperature.....77-82.
24 hr trend......5 degrees warmer.
Min humidity........18-24 percent.
24 hr trend......6 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then west
around 10 mph. Gusts up to 20 mph.
Ridge top winds.....Southwest around 10 mph until 1200, then west.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 10 to 15 mph.
Mixing Height.......3200-5200 ft agl until 1200, then 8200-10200 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good.
.Forecast days 3 through 7......
.SATURDAY NIGHT...Partly cloudy. Chance of showers and slight
chance of thunderstorms in the evening. Lows in the lower 50s.
Winds generally less than 10 mph.
.SUNDAY...Mostly clear. Chance of showers and slight chance of
thunderstorms. Lows in the lower 50s. Highs in the mid 70s. Winds
generally less than 10 mph.
.MONDAY THROUGH TUESDAY...Mostly clear. Lows in the upper 50s.
Highs in the lower 80s. Southwest winds around 10 mph.
.WEDNESDAY THROUGH THURSDAY...Mostly clear. Lows in the upper
50s. Highs 82 to 87.
$$