543
FPUS55 KRIW 312003
ZFPRIW

Zone Forecast Product for Western and Central Wyoming
National Weather Service Riverton WY
202 PM MDT Fri Jul 31 2026

WYZ020-312200-
Natrona County Lower Elevations-
Including the city of Casper
202 PM MDT Fri Jul 31 2026

...HEAT ADVISORY IN EFFECT FROM NOON SATURDAY TO 10 PM MDT
SUNDAY...

.THIS AFTERNOON...Partly cloudy. Areas of smoke. Highs in the
lower 90s. North winds around 10 mph with gusts up to 20 mph.
.TONIGHT...Mostly clear. Patchy smoke. Lows in the upper 50s.
East winds 10 to 15 mph, becoming south after midnight.
.SATURDAY...Sunny. Patchy smoke. Hot with highs in the mid 90s.
Southwest winds around 10 mph.
.SATURDAY NIGHT...Mostly clear in the evening, then becoming
partly cloudy. Patchy smoke in the evening. Lows in the mid 60s.
Southwest winds 10 to 15 mph with gusts up to 25 mph.
.SUNDAY...Mostly sunny. Hot with highs around 100. Southwest
winds 10 to 15 mph. Gusts up to 30 mph in the afternoon.
.SUNDAY NIGHT...Partly cloudy in the evening, then clearing.
Breezy with lows in the lower 60s.
.MONDAY...Mostly sunny and breezy. Highs in the lower 80s.
.MONDAY NIGHT...Clear, breezy with lows around 50.
.TUESDAY...Mostly sunny and breezy. Highs around 80.
.TUESDAY NIGHT...Clear, breezy with lows in the lower 50s.
.WEDNESDAY...Mostly sunny. Highs around 90.
.WEDNESDAY NIGHT...Clear. Lows in the upper 50s.
.THURSDAY...Mostly sunny. Hot with highs in the mid 90s.

$$

WYZ017-312200-
Wind River Basin-
Including the cities of Riverton and Shoshoni
202 PM MDT Fri Jul 31 2026

...HEAT ADVISORY IN EFFECT FROM NOON SATURDAY TO 10 PM MDT
SUNDAY...

.THIS AFTERNOON...Mostly sunny. Patchy smoke. Highs in the lower
90s. North winds around 10 mph with gusts up to 20 mph.
.TONIGHT...Mostly clear. Patchy smoke. Lows around 60. Northeast
winds 10 to 15 mph, becoming southwest after midnight.
.SATURDAY...Sunny. Patchy smoke. Hot with highs in the mid 90s.
Southwest winds around 10 mph.
.SATURDAY NIGHT...Mostly clear in the evening, then becoming
partly cloudy. Patchy smoke in the evening. Lows in the lower
60s. Southwest winds 10 to 15 mph.
.SUNDAY...Mostly sunny and breezy, hot with highs 97 to 103.
Southwest winds around 10 mph, increasing to 15 to 20 mph with
gusts up to 35 mph in the afternoon.
.SUNDAY NIGHT...Mostly clear and breezy. Lows around 60.
.MONDAY...Mostly sunny and breezy. Highs in the mid 80s.
.MONDAY NIGHT...Clear, breezy with lows around 50.
.TUESDAY...Sunny. Highs in the lower 80s.
.TUESDAY NIGHT...Clear. Lows in the mid 50s.
.WEDNESDAY...Sunny. Highs around 90.
.WEDNESDAY NIGHT...Clear. Lows around 60.
.THURSDAY...Sunny, hot with highs in the mid 90s.

$$

WYZ018-312200-
Lander Foothills-
Including the city of Lander
202 PM MDT Fri Jul 31 2026

...HEAT ADVISORY IN EFFECT FROM NOON SATURDAY TO 10 PM MDT
SUNDAY...

.THIS AFTERNOON...Partly cloudy with scattered showers with
isolated thunderstorms. Patchy smoke. Some thunderstorms may
produce gusty winds. Highs around 90. North winds 10 to 15 mph.
Chance of rain 30 percent.
.TONIGHT...Partly cloudy in the evening, then clearing. Patchy
smoke. Breezy with lows around 60. West winds 15 to 20 mph with
gusts up to 30 mph, becoming southwest around 10 mph after
midnight.
.SATURDAY...Mostly sunny. Patchy smoke. Hot with highs in the mid
90s. East winds around 10 mph in the afternoon.
.SATURDAY NIGHT...Mostly clear in the evening, then becoming
partly cloudy. Patchy smoke in the evening. Lows in the lower
60s. Southwest winds 10 to 15 mph.
.SUNDAY...Mostly sunny and breezy, hot with highs around 100.
Southwest winds around 10 mph, increasing to 15 to 20 mph with
gusts up to 30 mph in the afternoon.
.SUNDAY NIGHT...Mostly clear and breezy. Lows in the lower 60s.
.MONDAY...Sunny, breezy with highs in the upper 80s.
.MONDAY NIGHT...Clear, breezy with lows in the lower 50s.
.TUESDAY...Sunny. Highs in the mid 80s.
.TUESDAY NIGHT...Clear. Lows in the lower 50s.
.WEDNESDAY...Sunny. Highs in the lower 90s.
.WEDNESDAY NIGHT...Clear. Lows around 60.
.THURSDAY...Mostly sunny. Hot with highs in the mid 90s.

$$

WYZ028-312200-
Rock Springs and Green River-
Including the cities of Rock Springs and Green River
202 PM MDT Fri Jul 31 2026

...HEAT ADVISORY IN EFFECT FROM NOON SATURDAY TO 10 PM MDT
SUNDAY...

.THIS AFTERNOON...Mostly sunny. Patchy smoke. Highs around 90.
Northwest winds around 10 mph.
.TONIGHT...Partly cloudy in the evening, then clearing. Patchy
smoke. Lows in the mid 50s. North winds around 10 mph with gusts
up to 20 mph in the evening.
.SATURDAY...Sunny. Patchy smoke. Highs in the lower 90s. West
winds around 10 mph in the afternoon.
.SATURDAY NIGHT...Patchy smoke in the evening. Partly cloudy.
Lows in the upper 50s. Southwest winds around 10 mph in the
evening.
.SUNDAY...Mostly sunny and breezy, hot with highs in the mid 90s.
West winds 15 to 20 mph with gusts up to 30 mph in the afternoon.
.SUNDAY NIGHT...Mostly clear and breezy. Lows in the upper 50s.
.MONDAY...Sunny, breezy with highs around 90.
.MONDAY NIGHT...Clear, breezy with lows around 50.
.TUESDAY...Mostly sunny. Highs around 90.
.TUESDAY NIGHT...Clear. Lows around 50.
.WEDNESDAY...Sunny. Highs in the lower 90s.
.WEDNESDAY NIGHT...Mostly clear. Lows in the upper 50s.
.THURSDAY...Mostly sunny. Highs in the mid 90s.

$$

WYZ013-312200-
Jackson Hole-
Including the city of Jackson
202 PM MDT Fri Jul 31 2026

...HEAT ADVISORY IN EFFECT FROM NOON SATURDAY TO 10 PM MDT
SUNDAY...

.THIS AFTERNOON...Mostly sunny. Patchy smoke. Highs in the mid
80s. West winds 10 to 15 mph with gusts up to 25 mph.
.TONIGHT...Mostly clear. Patchy smoke. Lows around 50. Southwest
winds 10 to 15 mph in the evening.
.SATURDAY...Mostly sunny. Patchy smoke. Highs around 90.
Southeast winds around 10 mph, becoming southwest with gusts up
to 25 mph in the afternoon.
.SATURDAY NIGHT...Partly cloudy in the evening, then clearing.
Patchy smoke in the evening. Lows in the lower 50s. Southwest
winds 10 to 15 mph with gusts up to 25 mph in the evening.
.SUNDAY...Sunny, breezy with highs in the upper 80s. South winds
around 10 mph with gusts up to 20 mph, becoming west 15 to 20 mph
with gusts up to 35 mph in the afternoon.
.SUNDAY NIGHT...Clear, breezy with lows around 50.
.MONDAY...Sunny. Highs in the upper 70s.
.MONDAY NIGHT...Clear. Lows in the lower 40s.
.TUESDAY...Sunny. Highs around 80.
.TUESDAY NIGHT...Clear. Lows in the mid 40s.
.WEDNESDAY...Sunny. Highs in the mid 80s.
.WEDNESDAY NIGHT...Clear. Lows around 50.
.THURSDAY...Sunny. Highs in the upper 80s.

$$

WYZ003-312200-
Cody Foothills-
Including the cities of Clark, Cody, and Meeteetse
202 PM MDT Fri Jul 31 2026

...HEAT ADVISORY IN EFFECT FROM NOON SATURDAY TO 10 PM MDT
SUNDAY...

.THIS AFTERNOON...Mostly sunny. Areas of smoke. Highs in the
upper 80s. Northeast winds around 10 mph.
.TONIGHT...Mostly clear. Areas of smoke in the evening, then
patchy smoke after midnight. Lows in the lower 60s. Northwest
winds 10 to 15 mph with gusts up to 30 mph, becoming southwest
after midnight.
.SATURDAY...Mostly sunny. Patchy smoke. Breezy, hot with highs in
the upper 90s. Southwest winds around 10 mph, increasing to 15 to
20 mph with gusts up to 30 mph in the afternoon.
.SATURDAY NIGHT...Patchy smoke in the evening. Partly cloudy.
Breezy with lows in the mid 60s. Southwest winds 15 to 20 mph
with gusts up to 30 mph.
.SUNDAY...Mostly sunny and breezy, hot with highs in the mid 90s.
Northwest winds around 10 mph with gusts up to 20 mph, increasing
to west 20 to 25 mph with gusts up to 40 mph in the afternoon.
.SUNDAY NIGHT...Mostly clear and windy. Lows around 60.
.MONDAY...Sunny, windy and not as warm with highs in the mid 70s.
.MONDAY NIGHT...Clear, breezy with lows around 50.
.TUESDAY...Sunny. Highs in the mid 70s.
.TUESDAY NIGHT...Mostly clear. Lows around 50.
.WEDNESDAY...Sunny. Highs in the mid 80s.
.WEDNESDAY NIGHT...Mostly clear. Lows around 60.
.THURSDAY...Sunny. Highs around 90.

$$

WYZ004-312200-
North Bighorn Basin-
Including the cities of Basin, Greybull, Lovell, Powell,
and Shell
202 PM MDT Fri Jul 31 2026

...HEAT ADVISORY IN EFFECT FROM NOON SATURDAY TO 10 PM MDT
SUNDAY...

.THIS AFTERNOON...Sunny. Areas of smoke. Hot with highs in the
mid 90s. North winds around 10 mph.
.TONIGHT...Clear. Areas of smoke. Lows in the lower 60s. North
winds around 10 mph, becoming south after midnight.
.SATURDAY...Sunny. Patchy smoke. Hot with highs around 100.
Southeast winds 10 to 15 mph.
.SATURDAY NIGHT...Partly cloudy in the evening, then clearing.
Patchy smoke in the evening. Lows in the mid 60s. South winds
10 to 15 mph with gusts up to 25 mph.
.SUNDAY...Mostly sunny. Hot with highs around 100. West winds
10 to 15 mph. Gusts up to 30 mph in the afternoon.
.SUNDAY NIGHT...Mostly clear and windy. Lows around 60.
.MONDAY...Sunny, windy and not as warm with highs in the lower
80s.
.MONDAY NIGHT...Clear, windy with lows around 50.
.TUESDAY...Sunny. Highs in the lower 80s.
.TUESDAY NIGHT...Mostly clear. Lows in the lower 50s.
.WEDNESDAY...Sunny. Highs around 90.
.WEDNESDAY NIGHT...Clear. Lows around 60.
.THURSDAY...Sunny, hot with highs in the mid 90s.

$$

WYZ006-312200-
Southeast Bighorn Basin-
Including the cities of Ten Sleep and Worland
202 PM MDT Fri Jul 31 2026

...HEAT ADVISORY IN EFFECT FROM NOON SATURDAY TO 10 PM MDT
SUNDAY...

.THIS AFTERNOON...Sunny. Areas of smoke. Hot with highs in the
mid 90s. Northwest winds around 10 mph.
.TONIGHT...Clear. Areas of smoke in the evening, then patchy
smoke after midnight. Lows in the lower 60s. East winds around
10 mph, becoming south after midnight.
.SATURDAY...Sunny. Patchy smoke. Hot with highs around 100. South
winds around 10 mph.
.SATURDAY NIGHT...Partly cloudy in the evening, then clearing.
Patchy smoke in the evening. Lows in the mid 60s. Southeast winds
around 10 mph.
.SUNDAY...Mostly sunny and breezy, hot with highs around 100.
West winds 15 to 20 mph with gusts up to 30 mph in the afternoon.
.SUNDAY NIGHT...Mostly clear and breezy. Lows around 60.
.MONDAY...Sunny, breezy with highs in the mid 80s.
.MONDAY NIGHT...Clear, breezy with lows in the lower 50s.
.TUESDAY...Sunny. Highs in the lower 80s.
.TUESDAY NIGHT...Mostly clear. Lows in the mid 50s.
.WEDNESDAY...Sunny. Highs in the lower 90s.
.WEDNESDAY NIGHT...Clear. Lows around 60.
.THURSDAY...Sunny, hot with highs in the mid 90s.

$$

WYZ005-312200-
Southwest Bighorn Basin-
Including the city of Thermopolis
202 PM MDT Fri Jul 31 2026

...HEAT ADVISORY IN EFFECT FROM NOON SATURDAY TO 10 PM MDT
SUNDAY...

.THIS AFTERNOON...Mostly sunny. Areas of smoke. Highs in the mid
90s. North winds around 10 mph.
.TONIGHT...Mostly clear. Areas of smoke in the evening, then
patchy smoke after midnight. Lows in the lower 60s. South winds
10 to 15 mph.
.SATURDAY...Sunny. Patchy smoke. Hot with highs around 100. South
winds 10 to 15 mph.
.SATURDAY NIGHT...Partly cloudy in the evening, then clearing.
Patchy smoke in the evening. Lows in the mid 60s. Southwest winds
10 to 15 mph.
.SUNDAY...Mostly sunny and breezy, hot with highs 98 to 104.
Southwest winds around 10 mph, increasing to 15 to 20 mph with
gusts up to 30 mph in the afternoon.
.SUNDAY NIGHT...Mostly clear and breezy. Lows around 60.
.MONDAY...Sunny, breezy and not as warm with highs in the lower
80s.
.MONDAY NIGHT...Clear, breezy with lows around 50.
.TUESDAY...Sunny. Highs in the lower 80s.
.TUESDAY NIGHT...Mostly clear. Lows in the lower 50s.
.WEDNESDAY...Sunny. Highs around 90.
.WEDNESDAY NIGHT...Clear. Lows around 60.
.THURSDAY...Sunny, hot with highs in the mid 90s.

$$

WYZ023-312200-
Star Valley-
Including the cities of Afton, Alpine, Star Valley Ranch,
and Thayne
202 PM MDT Fri Jul 31 2026

...HEAT ADVISORY IN EFFECT FROM NOON SATURDAY TO 10 PM MDT
SUNDAY...

.THIS AFTERNOON...Partly cloudy. Patchy smoke. Highs around 90.
Northwest winds around 10 mph with gusts up to 20 mph.
.TONIGHT...Mostly clear. Patchy smoke. Lows in the lower 50s.
East winds 10 to 15 mph in the evening.
.SATURDAY...Mostly sunny. Patchy smoke. Highs in the lower 90s.
South winds around 10 mph, becoming southwest in the afternoon.
.SATURDAY NIGHT...Patchy smoke in the evening. Mostly clear. Lows
in the mid 50s. South winds around 10 mph with gusts up to 20 mph
in the evening.
.SUNDAY...Mostly sunny. Highs around 90. West winds 10 to 15 mph
with gusts up to 25 mph in the afternoon.
.SUNDAY NIGHT...Clear. Lows in the lower 50s.
.MONDAY...Sunny. Highs in the lower 80s.
.MONDAY NIGHT...Clear. Lows in the mid 40s.
.TUESDAY...Sunny. Highs in the mid 80s.
.TUESDAY NIGHT...Clear. Lows in the mid 40s.
.WEDNESDAY...Sunny. Highs around 90.
.WEDNESDAY NIGHT...Clear. Lows in the lower 50s.
.THURSDAY...Sunny. Highs around 90.

$$

WYZ025-312200-
Upper Green River Basin Foothills-
Including the city of Pinedale
202 PM MDT Fri Jul 31 2026

...HEAT ADVISORY IN EFFECT FROM NOON SATURDAY TO 10 PM MDT
SUNDAY...

.THIS AFTERNOON...Partly cloudy with isolated showers and
thunderstorms. Patchy smoke. Some thunderstorms may produce gusty
winds. Highs in the mid 80s. Northwest winds 10 to 15 mph with
gusts up to 25 mph. Chance of rain 20 percent.
.TONIGHT...Mostly clear. Patchy smoke. Lows in the upper 40s.
North winds 10 to 15 mph with gusts up to 30 mph in the evening.
.SATURDAY...Mostly sunny. Patchy smoke. Highs around 90.
Southwest winds 10 to 15 mph in the afternoon.
.SATURDAY NIGHT...Partly cloudy in the evening, then clearing.
Patchy smoke in the evening. Lows in the lower 50s. Northwest
winds 10 to 15 mph with gusts up to 25 mph in the evening.
.SUNDAY...Mostly sunny and breezy. Highs around 90. West winds
15 to 20 mph with gusts up to 30 mph in the afternoon.
.SUNDAY NIGHT...Clear, breezy with lows around 50.
.MONDAY...Sunny, breezy with highs around 80.
.MONDAY NIGHT...Clear. Lows in the lower 40s.
.TUESDAY...Sunny. Highs around 80.
.TUESDAY NIGHT...Clear. Lows in the lower 40s.
.WEDNESDAY...Sunny. Highs in the mid 80s.
.WEDNESDAY NIGHT...Clear. Lows in the upper 40s.
.THURSDAY...Sunny. Highs in the upper 80s.

$$

WYZ026-312200-
Upper Green River Basin-
Including the cities of La Barge, Big Piney, and Farson
202 PM MDT Fri Jul 31 2026

...HEAT ADVISORY IN EFFECT FROM NOON SATURDAY TO 10 PM MDT
SUNDAY...

.THIS AFTERNOON...Partly cloudy with isolated showers and
thunderstorms. Patchy smoke. Some thunderstorms may produce gusty
winds. Highs in the mid 80s. West winds 10 to 15 mph with gusts
up to 30 mph. Chance of rain 20 percent.
.TONIGHT...Partly cloudy in the evening, then clearing. Patchy
smoke. Lows in the lower 50s. North winds 10 to 15 mph.
.SATURDAY...Sunny. Patchy smoke. Highs around 90. Southwest winds
10 to 15 mph in the afternoon.
.SATURDAY NIGHT...Patchy smoke in the evening. Partly cloudy.
Lows in the lower 50s. West winds 10 to 15 mph in the evening.
.SUNDAY...Mostly sunny and breezy. Highs in the lower 90s.
Southwest winds 15 to 20 mph with gusts up to 35 mph in the
afternoon.
.SUNDAY NIGHT...Mostly clear and breezy. Lows in the lower 50s.
.MONDAY...Sunny, breezy with highs in the mid 80s.
.MONDAY NIGHT...Clear, breezy with lows in the mid 40s.
.TUESDAY...Sunny. Highs in the lower 80s.
.TUESDAY NIGHT...Clear. Lows in the mid 40s.
.WEDNESDAY...Sunny. Highs around 90.
.WEDNESDAY NIGHT...Mostly clear. Lows in the lower 50s.
.THURSDAY...Sunny. Highs around 90.

$$

WYZ010-312200-
Northeast Johnson County-
Including the city of Buffalo
202 PM MDT Fri Jul 31 2026

...HEAT ADVISORY IN EFFECT FROM NOON SATURDAY TO 10 PM MDT
SUNDAY...

.THIS AFTERNOON...Partly cloudy with scattered showers and
thunderstorms. Areas of smoke. Some thunderstorms may produce
gusty winds. Highs in the lower 90s. Southwest winds 10 to 15 mph
with gusts up to 30 mph. Chance of rain 30 percent.
.TONIGHT...Mostly clear. Areas of smoke. Lows in the lower 60s.
South winds around 10 mph.
.SATURDAY...Sunny. Areas of smoke in the morning, then patchy
smoke in the afternoon. Hot with highs in the upper 90s.
Southeast winds 10 to 15 mph.
.SATURDAY NIGHT...Patchy smoke in the evening. Partly cloudy.
Lows in the mid 60s. Southeast winds 10 to 15 mph, becoming
southwest after midnight. Gusts up to 30 mph.
.SUNDAY...Mostly sunny and breezy, hot with highs in the mid 90s.
Northwest winds 20 to 25 mph with gusts up to 35 mph, becoming
east 10 to 15 mph with gusts up to 25 mph in the afternoon.
.SUNDAY NIGHT...Mostly clear and breezy. Lows in the lower 60s.
.MONDAY...Sunny, breezy with highs around 80.
.MONDAY NIGHT...Mostly clear and breezy. Lows in the lower 50s.
.TUESDAY...Mostly sunny. Highs around 80.
.TUESDAY NIGHT...Mostly clear. Lows in the mid 50s.
.WEDNESDAY...Mostly sunny. Highs in the upper 80s.
.WEDNESDAY NIGHT...Mostly clear. Lows around 60.
.THURSDAY...Mostly sunny. Highs in the mid 90s.

$$

WYZ011-312200-
Southeast Johnson County-
Including the city of Kaycee
202 PM MDT Fri Jul 31 2026

...HEAT ADVISORY IN EFFECT FROM NOON SATURDAY TO 10 PM MDT
SUNDAY...

.THIS AFTERNOON...Partly cloudy with scattered showers with
isolated thunderstorms. Areas of smoke. Some thunderstorms may
produce gusty winds. Near steady temperature in the upper 80s.
East winds 10 to 15 mph with gusts up to 30 mph. Chance of rain
30 percent.
.TONIGHT...Mostly clear. Areas of smoke. Lows around 60.
Southeast winds 10 to 15 mph with gusts up to 25 mph, becoming
southwest after midnight.
.SATURDAY...Sunny. Patchy smoke. Hot with highs in the upper 90s.
South winds 10 to 15 mph.
.SATURDAY NIGHT...Mostly clear in the evening, then becoming
partly cloudy. Patchy smoke in the evening. Lows in the mid 60s.
Southwest winds 10 to 15 mph with gusts up to 30 mph.
.SUNDAY...Mostly sunny and breezy, hot with highs in the upper
90s. Northwest winds 15 to 20 mph, becoming northeast 10 to
15 mph in the afternoon.
.SUNDAY NIGHT...Mostly clear and breezy. Lows in the lower 60s.
.MONDAY...Sunny, breezy with highs in the lower 80s.
.MONDAY NIGHT...Clear, breezy with lows in the lower 50s.
.TUESDAY...Mostly sunny. Highs in the lower 80s.
.TUESDAY NIGHT...Mostly clear. Lows in the mid 50s.
.WEDNESDAY...Mostly sunny. Highs in the upper 80s.
.WEDNESDAY NIGHT...Mostly clear. Lows around 60.
.THURSDAY...Mostly sunny. Hot with highs in the mid 90s.

$$

WYZ027-312200-
South Lincoln County-
Including the cities of Kemmerer and Cokeville
202 PM MDT Fri Jul 31 2026

...HEAT ADVISORY IN EFFECT FROM NOON SATURDAY TO 10 PM MDT
SUNDAY...

.THIS AFTERNOON...Mostly sunny. Patchy smoke. Highs around 90.
West winds 10 to 15 mph with gusts up to 25 mph.
.TONIGHT...Mostly clear. Patchy smoke. Lows in the mid 50s. North
winds around 10 mph.
.SATURDAY...Sunny. Patchy smoke. Highs in the lower 90s.
Northeast winds around 10 mph, becoming southwest in the
afternoon.
.SATURDAY NIGHT...Patchy smoke in the evening. Mostly clear. Lows
in the mid 50s. West winds 10 to 15 mph with gusts up to 25 mph
in the evening.
.SUNDAY...Mostly sunny and breezy. Highs in the lower 90s.
Southwest winds around 10 mph, increasing to west 20 to 25 mph in
the afternoon.
.SUNDAY NIGHT...Mostly clear and breezy. Lows in the mid 50s.
.MONDAY...Sunny, breezy with highs in the mid 80s.
.MONDAY NIGHT...Clear. Lows around 50.
.TUESDAY...Sunny. Highs in the mid 80s.
.TUESDAY NIGHT...Clear. Lows around 50.
.WEDNESDAY...Sunny. Highs around 90.
.WEDNESDAY NIGHT...Mostly clear. Lows in the mid 50s.
.THURSDAY...Sunny. Highs in the lower 90s.

$$

WYZ016-312200-
Upper Wind River Basin-
Including the city of Dubois
202 PM MDT Fri Jul 31 2026

...HEAT ADVISORY IN EFFECT FROM NOON SATURDAY TO 10 PM MDT
SUNDAY...

.THIS AFTERNOON...Partly cloudy. Patchy smoke. Near steady
temperature in the lower 80s. Northwest winds 10 to 15 mph.
.TONIGHT...Mostly clear. Patchy smoke. Lows in the mid 50s. West
winds 10 to 15 mph.
.SATURDAY...Mostly sunny. Patchy smoke. Highs around 90.
Northwest winds around 10 mph, becoming west with gusts up to
25 mph in the afternoon.
.SATURDAY NIGHT...Patchy smoke in the evening. Partly cloudy.
Lows in the upper 50s. West winds 10 to 15 mph with gusts up to
25 mph.
.SUNDAY...Mostly sunny and breezy. Highs in the lower 90s. West
winds 10 to 15 mph, increasing to 20 to 25 mph with gusts up to
35 mph in the afternoon.
.SUNDAY NIGHT...Clear, breezy with lows in the mid 50s.
.MONDAY...Sunny, breezy with highs around 80.
.MONDAY NIGHT...Clear, breezy with lows in the mid 40s.
.TUESDAY...Sunny. Highs in the upper 70s.
.TUESDAY NIGHT...Mostly clear. Lows in the upper 40s.
.WEDNESDAY...Sunny. Highs in the mid 80s.
.WEDNESDAY NIGHT...Clear. Lows in the lower 50s.
.THURSDAY...Sunny. Highs in the upper 80s.

$$

WYZ001-312200-
Yellowstone National Park-
Including the cities of Lake, Mammoth, and Old Faithful
202 PM MDT Fri Jul 31 2026

.THIS AFTERNOON...Mostly sunny. Patchy smoke. Highs around 80.
West winds around 10 mph with gusts up to 20 mph.
.TONIGHT...Mostly clear. Patchy smoke. Lows around 50. Southwest
winds around 10 mph, becoming southeast after midnight.
.SATURDAY...Mostly sunny. Patchy smoke. Breezy with highs in the
lower 80s. South winds 10 to 15 mph, becoming southwest 15 to
20 mph with gusts up to 30 mph in the afternoon.
.SATURDAY NIGHT...Partly cloudy in the evening, then clearing.
Breezy with lows in the lower 50s. Southwest winds 15 to 20 mph
with gusts up to 30 mph, becoming south around 10 mph with gusts
up to 20 mph after midnight.
.SUNDAY...Mostly sunny and breezy. Highs in the upper 70s. South
winds around 10 mph with gusts up to 25 mph, becoming southwest
15 to 20 mph with gusts up to 40 mph in the afternoon.
.SUNDAY NIGHT...Clear, breezy with lows in the mid 40s.
.MONDAY...Sunny. Highs around 70.
.MONDAY NIGHT...Clear. Lows in the upper 30s.
.TUESDAY...Sunny. Highs in the lower 70s.
.TUESDAY NIGHT...Mostly clear. Lows in the lower 40s.
.WEDNESDAY...Sunny. Highs in the upper 70s.
.WEDNESDAY NIGHT...Clear. Lows in the upper 40s.
.THURSDAY...Sunny. Highs around 80.

$$

WYZ029-312200-
Flaming Gorge-
202 PM MDT Fri Jul 31 2026

...HEAT ADVISORY IN EFFECT FROM NOON SATURDAY TO 10 PM MDT
SUNDAY...

.THIS AFTERNOON...Mostly sunny. Patchy smoke. Highs in the upper
80s. Northwest winds around 10 mph.
.TONIGHT...Mostly clear. Patchy smoke. Lows around 60. North
winds around 10 mph, becoming east after midnight.
.SATURDAY...Sunny. Patchy smoke. Highs in the lower 90s.
Northwest winds around 10 mph with gusts up to 20 mph in the
afternoon.
.SATURDAY NIGHT...Mostly clear in the evening, then becoming
partly cloudy. Patchy smoke in the evening. Lows around 60. South
winds around 10 mph in the evening.
.SUNDAY...Mostly sunny. Hot with highs in the mid 90s. South
winds around 10 mph, becoming west with gusts up to 30 mph in the
afternoon.
.SUNDAY NIGHT...Mostly clear and breezy. Lows around 60.
.MONDAY...Mostly sunny. Highs in the upper 80s.
.MONDAY NIGHT...Mostly clear and breezy. Lows in the mid 50s.
.TUESDAY...Mostly sunny. Highs in the upper 80s.
.TUESDAY NIGHT...Clear. Lows in the mid 50s.
.WEDNESDAY...Mostly sunny. Highs in the lower 90s.
.WEDNESDAY NIGHT...Mostly clear. Lows around 60.
.THURSDAY...Mostly sunny. Highs in the lower 90s.

$$

WYZ022-312200-
Casper Mountain-
202 PM MDT Fri Jul 31 2026

.THIS AFTERNOON...Partly cloudy. Patchy smoke. Highs in the lower
80s. North winds 10 to 15 mph.
.TONIGHT...Mostly clear. Patchy smoke. Lows in the mid 50s.
Southeast winds 10 to 15 mph.
.SATURDAY...Mostly sunny. Patchy smoke. Highs in the upper 80s.
South winds around 10 mph, becoming west in the afternoon.
.SATURDAY NIGHT...Mostly clear in the evening, then becoming
partly cloudy. Patchy smoke in the evening. Lows in the lower
60s. South winds 10 to 15 mph. Gusts up to 30 mph after midnight.
.SUNDAY...Mostly sunny. Highs in the lower 90s. Southwest winds
around 10 mph, becoming west in the afternoon. Gusts up to
25 mph.
.SUNDAY NIGHT...Mostly clear. Lows in the lower 60s.
.MONDAY...Mostly sunny. Highs around 80.
.MONDAY NIGHT...Clear, breezy with lows in the upper 40s.
.TUESDAY...Mostly sunny. Highs in the mid 70s.
.TUESDAY NIGHT...Clear. Lows in the lower 50s.
.WEDNESDAY...Mostly sunny. Highs in the lower 80s.
.WEDNESDAY NIGHT...Clear. Lows in the upper 50s.
.THURSDAY...Mostly sunny. Highs in the upper 80s.

$$

WYZ002-312200-
Absaroka Mountains-
202 PM MDT Fri Jul 31 2026

.THIS AFTERNOON...Partly cloudy with scattered showers with
isolated thunderstorms. Patchy smoke. Some thunderstorms may
produce gusty winds. Near steady temperature in the lower 70s.
Northwest winds 10 to 15 mph. Chance of rain 30 percent.
.TONIGHT...Mostly clear. Patchy smoke. Lows in the lower 50s.
West winds around 10 mph, becoming southwest after midnight.
.SATURDAY...Sunny. Patchy smoke. Breezy with highs around 80.
Southwest winds 15 to 20 mph.
.SATURDAY NIGHT...Patchy smoke in the evening. Partly cloudy.
Breezy with lows in the mid 50s. West winds 15 to 20 mph with
gusts up to 30 mph.
.SUNDAY...Mostly sunny and windy. Highs in the upper 70s.
Southwest winds 15 to 20 mph with gusts up to 30 mph, becoming
west 20 to 30 mph with gusts up to 45 mph in the afternoon.
.SUNDAY NIGHT...Clear, windy with lows in the upper 40s.
.MONDAY...Sunny, breezy with highs in the upper 60s.
.MONDAY NIGHT...Clear. Lows in the upper 30s.
.TUESDAY...Sunny. Highs in the upper 60s.
.TUESDAY NIGHT...Mostly clear. Lows in the lower 40s.
.WEDNESDAY...Sunny. Highs in the lower 70s.
.WEDNESDAY NIGHT...Mostly clear. Lows around 50.
.THURSDAY...Mostly sunny and breezy. Highs in the mid 70s.

$$

WYZ007-312200-
Owl Creek and Bridger Mountains-
202 PM MDT Fri Jul 31 2026

.THIS AFTERNOON...Partly cloudy. Patchy smoke. Highs in the upper
80s. North winds 10 to 15 mph.
.TONIGHT...Mostly clear. Patchy smoke. Lows in the lower 60s.
East winds around 10 mph with gusts up to 20 mph, becoming south
after midnight.
.SATURDAY...Sunny. Patchy smoke. Highs in the lower 90s.
Southwest winds 10 to 15 mph with gusts up to 25 mph.
.SATURDAY NIGHT...Patchy smoke in the evening. Mostly clear. Lows
in the mid 60s. Southwest winds 10 to 15 mph with gusts up to
25 mph.
.SUNDAY...Mostly sunny and breezy, hot with highs in the mid 90s.
Southwest winds around 10 mph, increasing to 20 to 25 mph with
gusts up to 35 mph in the afternoon.
.SUNDAY NIGHT...Mostly clear and breezy. Lows around 60.
.MONDAY...Sunny, breezy and not as warm with highs in the mid
70s.
.MONDAY NIGHT...Clear, windy with lows in the upper 40s.
.TUESDAY...Sunny. Highs in the upper 70s.
.TUESDAY NIGHT...Clear. Lows in the lower 50s.
.WEDNESDAY...Sunny. Highs in the mid 80s.
.WEDNESDAY NIGHT...Clear. Lows around 60.
.THURSDAY...Sunny. Highs in the upper 80s.

$$

WYZ008-312200-
Bighorn Mountains West-
202 PM MDT Fri Jul 31 2026

.THIS AFTERNOON...Mostly sunny. Areas of smoke. Highs around 80.
West winds around 10 mph with gusts up to 20 mph.
.TONIGHT...Clear. Patchy smoke. Lows in the upper 50s. Northeast
winds 10 to 15 mph, becoming east after midnight.
.SATURDAY...Sunny. Patchy smoke. Highs in the mid 80s. South
winds 10 to 15 mph, becoming southwest in the afternoon.
.SATURDAY NIGHT...Patchy smoke in the evening. Partly cloudy.
Lows in the mid 60s. South winds 10 to 15 mph with gusts up to
25 mph.
.SUNDAY...Mostly sunny and breezy. Highs in the mid 80s. South
winds 10 to 15 mph with gusts up to 30 mph, becoming southwest
15 to 20 mph with gusts up to 40 mph in the afternoon.
.SUNDAY NIGHT...Mostly clear and breezy. Lows in the mid 50s.
.MONDAY...Sunny, breezy with highs in the lower 70s.
.MONDAY NIGHT...Clear, breezy with lows in the mid 40s.
.TUESDAY...Sunny. Highs around 70.
.TUESDAY NIGHT...Mostly clear. Lows in the upper 40s.
.WEDNESDAY...Mostly sunny. Highs in the upper 70s.
.WEDNESDAY NIGHT...Mostly clear. Lows in the upper 50s.
.THURSDAY...Sunny. Highs in the lower 80s.

$$

WYZ009-312200-
Bighorn Mountains Southeast-
202 PM MDT Fri Jul 31 2026

.THIS AFTERNOON...Partly cloudy with scattered showers and
thunderstorms. Areas of smoke. Some thunderstorms may produce
gusty winds. Highs in the upper 70s. Northwest winds 10 to
15 mph. Chance of rain 30 percent.
.TONIGHT...Mostly clear. Patchy smoke. Lows in the mid 50s. North
winds 10 to 15 mph, becoming west after midnight.
.SATURDAY...Sunny. Patchy smoke. Highs in the mid 80s. West winds
10 to 15 mph.
.SATURDAY NIGHT...Patchy smoke in the evening. Partly cloudy.
Lows in the lower 60s. West winds 10 to 15 mph with gusts up to
30 mph.
.SUNDAY...Mostly sunny and breezy. Highs in the mid 80s. West
winds 10 to 15 mph with gusts up to 30 mph, becoming southwest
15 to 20 mph with gusts up to 40 mph in the afternoon.
.SUNDAY NIGHT...Mostly clear and breezy. Lows in the mid 50s.
.MONDAY...Sunny, breezy with highs around 70.
.MONDAY NIGHT...Clear, breezy with lows in the mid 40s.
.TUESDAY...Mostly sunny. Highs in the upper 60s.
.TUESDAY NIGHT...Mostly clear. Lows in the upper 40s.
.WEDNESDAY...Mostly sunny. A slight chance of. Highs in the upper
70s.
.WEDNESDAY NIGHT...Mostly clear. Lows in the mid 50s.
.THURSDAY...Mostly sunny. Highs in the lower 80s.

$$

WYZ012-312200-
Teton and Gros Ventre Mountains-
202 PM MDT Fri Jul 31 2026

.THIS AFTERNOON...Mostly sunny. Patchy smoke. Highs in the upper
70s. West winds around 10 mph with gusts up to 20 mph.
.TONIGHT...Mostly clear. Patchy smoke. Lows in the lower 50s.
Southwest winds around 10 mph with gusts up to 20 mph, becoming
southeast after midnight.
.SATURDAY...Sunny. Patchy smoke. Highs in the lower 80s. South
winds around 10 mph, becoming southwest with gusts up to 25 mph
in the afternoon.
.SATURDAY NIGHT...Partly cloudy in the evening, then clearing.
Patchy smoke in the evening. Lows in the lower 50s. Southwest
winds 10 to 15 mph with gusts up to 25 mph, becoming southeast
after midnight.
.SUNDAY...Sunny, breezy with highs in the upper 70s. South winds
around 10 mph with gusts up to 25 mph, becoming west 15 to 20 mph
with gusts up to 40 mph in the afternoon.
.SUNDAY NIGHT...Clear, breezy with lows in the upper 40s.
.MONDAY...Sunny. Highs around 70.
.MONDAY NIGHT...Clear. Lows in the lower 40s.
.TUESDAY...Sunny. Highs in the lower 70s.
.TUESDAY NIGHT...Mostly clear. Lows in the mid 40s.
.WEDNESDAY...Sunny. Highs in the mid 70s.
.WEDNESDAY NIGHT...Clear. Lows around 50.
.THURSDAY...Sunny. Highs in the upper 70s.

$$

WYZ014-312200-
Wind River Mountains West-
202 PM MDT Fri Jul 31 2026

.THIS AFTERNOON...Partly cloudy with scattered showers with
isolated thunderstorms. Patchy smoke. Some thunderstorms may
produce gusty winds. Near steady temperature in the lower 70s.
West winds 10 to 15 mph with gusts up to 30 mph. Chance of rain
30 percent.
.TONIGHT...Partly cloudy in the evening, then clearing. Patchy
smoke. Lows around 50. Northeast winds 10 to 15 mph.
.SATURDAY...Mostly sunny. Patchy smoke. Highs in the upper 70s.
South winds around 10 mph, becoming southwest with gusts up to
25 mph in the afternoon.
.SATURDAY NIGHT...Patchy smoke in the evening. Partly cloudy.
Lows in the lower 50s. West winds 10 to 15 mph with gusts up to
25 mph, becoming north after midnight.
.SUNDAY...Mostly sunny and breezy. Highs around 80. Southwest
winds 10 to 15 mph with gusts up to 30 mph, increasing to 20 to
25 mph with gusts up to 40 mph in the afternoon.
.SUNDAY NIGHT...Mostly clear and breezy. Lows in the lower 50s.
.MONDAY...Sunny, breezy with highs in the lower 70s.
.MONDAY NIGHT...Clear. Lows in the lower 40s.
.TUESDAY...Sunny. Highs in the lower 70s.
.TUESDAY NIGHT...Mostly clear. Lows in the lower 40s.
.WEDNESDAY...Sunny. Highs in the mid 70s.
.WEDNESDAY NIGHT...Clear. Lows in the upper 40s.
.THURSDAY...Sunny, breezy with highs in the upper 70s.

$$

WYZ015-312200-
Wind River Mountains East-
202 PM MDT Fri Jul 31 2026

.THIS AFTERNOON...Partly cloudy with scattered showers with
isolated thunderstorms. Patchy smoke. Some thunderstorms may
produce gusty winds. Near steady temperature in the lower 70s.
Northwest winds 10 to 15 mph. Chance of rain 30 percent.
.TONIGHT...Partly cloudy in the evening, then clearing. Patchy
smoke. Lows around 50. West winds 10 to 15 mph.
.SATURDAY...Mostly sunny. Patchy smoke. Highs in the upper 70s.
Southwest winds 10 to 15 mph with gusts up to 25 mph.
.SATURDAY NIGHT...Patchy smoke in the evening. Partly cloudy.
Lows in the lower 50s. West winds 10 to 15 mph with gusts up to
25 mph.
.SUNDAY...Mostly sunny and breezy. Highs in the upper 70s.
Southwest winds 15 to 25 mph. Gusts up to 35 mph, increasing to
45 mph in the afternoon.
.SUNDAY NIGHT...Mostly clear and breezy. Lows in the lower 50s.
.MONDAY...Sunny, breezy with highs around 70.
.MONDAY NIGHT...Clear. Lows in the lower 40s.
.TUESDAY...Sunny. Highs in the upper 60s.
.TUESDAY NIGHT...Mostly clear. Lows in the lower 40s.
.WEDNESDAY...Sunny. Highs in the mid 70s.
.WEDNESDAY NIGHT...Clear. Lows in the upper 40s.
.THURSDAY...Sunny, breezy with highs in the upper 70s.

$$

WYZ019-312200-
Green Mountains and Rattlesnake Range-
Including the city of Jeffrey City
202 PM MDT Fri Jul 31 2026

...HEAT ADVISORY IN EFFECT FROM NOON SATURDAY TO 10 PM MDT
SUNDAY...

.THIS AFTERNOON...Mostly sunny. Patchy smoke. Highs in the mid
80s. Northwest winds 10 to 15 mph with gusts up to 25 mph.
.TONIGHT...Partly cloudy in the evening, then clearing. Patchy
smoke. Lows in the upper 50s. North winds 10 to 15 mph with gusts
up to 25 mph, becoming southeast after midnight.
.SATURDAY...Mostly sunny. Patchy smoke. Highs in the lower 90s.
Southwest winds 10 to 15 mph.
.SATURDAY NIGHT...Mostly clear in the evening, then becoming
partly cloudy. Patchy smoke in the evening. Lows in the lower
60s. Southwest winds around 10 mph.
.SUNDAY...Mostly sunny and breezy. Highs in the mid 90s.
Southwest winds around 10 mph with gusts up to 20 mph, increasing
to 15 to 20 mph with gusts up to 35 mph in the afternoon.
.SUNDAY NIGHT...Partly cloudy and breezy. Lows in the lower 60s.
.MONDAY...Mostly sunny and breezy. Highs in the mid 80s.
.MONDAY NIGHT...Clear, breezy with lows in the upper 40s.
.TUESDAY...Mostly sunny and breezy. Highs in the lower 80s.
.TUESDAY NIGHT...Clear. Lows in the lower 50s.
.WEDNESDAY...Sunny. Highs in the upper 80s.
.WEDNESDAY NIGHT...Clear. Lows in the upper 50s.
.THURSDAY...Mostly sunny. Highs in the lower 90s.

$$

WYZ024-312200-
Salt River and Wyoming Ranges-
202 PM MDT Fri Jul 31 2026

.THIS AFTERNOON...Partly cloudy with scattered showers with
isolated thunderstorms. Patchy smoke. Some thunderstorms may
produce gusty winds. Near steady temperature in the upper 70s.
West winds 10 to 15 mph with gusts up to 25 mph. Chance of rain
30 percent.
.TONIGHT...Mostly clear. Patchy smoke. Lows in the lower 50s.
North winds 10 to 15 mph with gusts up to 25 mph, becoming
southeast after midnight.
.SATURDAY...Sunny. Patchy smoke. Highs in the mid 80s. Southeast
winds around 10 mph, becoming southwest with gusts up to 25 mph
in the afternoon.
.SATURDAY NIGHT...Partly cloudy in the evening, then clearing.
Lows in the mid 50s. West winds 10 to 15 mph with gusts up to
25 mph in the evening.
.SUNDAY...Mostly sunny and breezy. Highs in the mid 80s. South
winds around 10 mph with gusts up to 25 mph, becoming west 15 to
20 mph with gusts up to 40 mph in the afternoon.
.SUNDAY NIGHT...Clear, breezy with lows in the lower 50s.
.MONDAY...Sunny, breezy with highs in the mid 70s.
.MONDAY NIGHT...Clear. Lows in the upper 40s.
.TUESDAY...Sunny. Highs in the upper 70s.
.TUESDAY NIGHT...Clear. Lows in the upper 40s.
.WEDNESDAY...Sunny. Highs in the lower 80s.
.WEDNESDAY NIGHT...Clear. Lows in the lower 50s.
.THURSDAY...Sunny. Highs in the lower 80s.

$$

WYZ030-312200-
East Sweetwater County-
Including the city of Wamsutter
202 PM MDT Fri Jul 31 2026

...HEAT ADVISORY IN EFFECT FROM NOON SATURDAY TO 10 PM MDT
SUNDAY...

.THIS AFTERNOON...Mostly sunny. Patchy smoke. Highs around 90.
Northwest winds 10 to 15 mph.
.TONIGHT...Partly cloudy in the evening, then clearing. Patchy
smoke. Lows in the mid 50s. North winds 10 to 15 mph, becoming
east after midnight.
.SATURDAY...Mostly sunny. Patchy smoke. Highs around 90. West
winds around 10 mph with gusts up to 20 mph in the afternoon.
.SATURDAY NIGHT...Mostly clear in the evening, then becoming
partly cloudy. Patchy smoke in the evening. Lows around 60. West
winds around 10 mph with gusts up to 20 mph in the evening.
.SUNDAY...Mostly sunny. Highs in the mid 90s. Southwest winds
10 to 15 mph. Gusts up to 30 mph in the afternoon.
.SUNDAY NIGHT...Mostly clear. Lows around 60.
.MONDAY...Mostly sunny and breezy. Highs around 90.
.MONDAY NIGHT...Mostly clear and breezy. Lows around 50.
.TUESDAY...Mostly sunny. Highs in the mid 80s.
.TUESDAY NIGHT...Clear. Lows around 50.
.WEDNESDAY...Mostly sunny. Highs around 90.
.WEDNESDAY NIGHT...Mostly clear. Lows around 60.
.THURSDAY...Mostly sunny. Highs in the lower 90s.

$$