579
FPUS55 KRIW 200818
ZFPRIW
ZONE FORECAST PRODUCT FOR WESTERN AND CENTRAL WYOMING
NATIONAL WEATHER SERVICE RIVERTON WY
217 AM MDT SUN SEP 20 2026
WYZ020-201000-
NATRONA COUNTY LOWER ELEVATIONS-
INCLUDING THE CITY OF CASPER
217 AM MDT SUN SEP 20 2026
REST OF TONIGHT
SHOWERS LIKELY WITH A CHANCE OF THUNDERSTORMS.
SOME THUNDERSTORMS MAY PRODUCE HEAVY RAINFALL. NEAR STEADY
TEMPERATURE IN THE UPPER 40S. NORTHWEST WINDS AROUND 10 MPH WITH
GUSTS UP TO 25 MPH. CHANCE OF RAIN 70 PERCENT.
SUNDAY
MOSTLY CLOUDY WITH SHOWERS LIKELY. A SLIGHT CHANCE OF
THUNDERSTORMS IN THE MORNING, THEN A CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. SOME THUNDERSTORMS MAY PRODUCE HEAVY RAINFALL IN
THE MORNING. HIGHS IN THE LOWER 60S. WEST WINDS 10 TO 15 MPH WITH
GUSTS UP TO 30 MPH. CHANCE OF RAIN 60 PERCENT.
SUNDAY NIGHT
MOSTLY CLOUDY IN THE EVENING, THEN BECOMING
PARTLY CLOUDY. LOWS AROUND 40. NORTH WINDS AROUND 10 MPH WITH
GUSTS UP TO 20 MPH IN THE EVENING.
MONDAY
MOSTLY SUNNY. HIGHS IN THE MID 60S.
MONDAY NIGHT
MOSTLY CLEAR. LOWS AROUND 40. SOUTHEAST WINDS
AROUND 10 MPH WITH GUSTS UP TO 25 MPH.
TUESDAY
MOSTLY SUNNY. HIGHS IN THE MID 70S.
TUESDAY NIGHT
A SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING.
PARTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS. LOWS IN THE UPPER
40S. CHANCE OF RAIN 20 PERCENT.
WEDNESDAY
PARTLY CLOUDY IN THE MORNING, THEN CLEARING. BREEZY
WITH HIGHS IN THE MID 70S.
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 40S.
THURSDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 70S.
THURSDAY NIGHT
MOSTLY CLEAR. LOWS AROUND 50.
FRIDAY
MOSTLY SUNNY. HIGHS AROUND 80.
FRIDAY NIGHT
MOSTLY CLEAR. LOWS AROUND 50.
SATURDAY
MOSTLY SUNNY AND BREEZY. HIGHS IN THE UPPER 70S.
WYZ017-201000-
WIND RIVER BASIN-
INCLUDING THE CITIES OF RIVERTON AND SHOSHONI
217 AM MDT SUN SEP 20 2026
REST OF TONIGHT
SHOWERS LIKELY WITH A SLIGHT CHANCE OF
THUNDERSTORMS. AREAS OF FOG. SOME THUNDERSTORMS MAY PRODUCE HEAVY
RAINFALL. NEAR STEADY TEMPERATURE IN THE UPPER 40S. NORTHWEST
WINDS AROUND 10 MPH WITH GUSTS UP TO 20 MPH. CHANCE OF RAIN
70 PERCENT.
SUNDAY
MOSTLY CLOUDY IN THE MORNING, THEN BECOMING PARTLY
CLOUDY. AREAS OF FOG IN THE MORNING. A CHANCE OF SHOWERS. A
SLIGHT CHANCE OF THUNDERSTORMS IN THE AFTERNOON. HIGHS IN THE
LOWER 60S. WEST WINDS AROUND 10 MPH, BECOMING NORTH IN THE
AFTERNOON. CHANCE OF RAIN 30 PERCENT.
SUNDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN CLEARING. LOWS
IN THE LOWER 40S.
MONDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 60S.
MONDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 40S. EAST WINDS
AROUND 10 MPH WITH GUSTS UP TO 20 MPH, BECOMING SOUTHWEST AFTER
MIDNIGHT.
TUESDAY
PARTLY CLOUDY IN THE MORNING, THEN CLEARING. HIGHS IN
THE MID 70S.
TUESDAY NIGHT
A SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING.
PARTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS. LOWS AROUND 50.
CHANCE OF RAIN 20 PERCENT.
WEDNESDAY
PARTLY CLOUDY IN THE MORNING, THEN CLEARING. HIGHS
IN THE MID 70S.
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 40S.
THURSDAY
SUNNY. HIGHS IN THE UPPER 70S.
THURSDAY NIGHT
MOSTLY CLEAR. LOWS AROUND 50.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 70S.
FRIDAY NIGHT
MOSTLY CLEAR. LOWS AROUND 50.
SATURDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 70S.
WYZ018-201000-
LANDER FOOTHILLS-
INCLUDING THE CITY OF LANDER
217 AM MDT SUN SEP 20 2026
REST OF TONIGHT
SHOWERS LIKELY WITH A SLIGHT CHANCE OF
THUNDERSTORMS. AREAS OF FOG. SOME THUNDERSTORMS MAY PRODUCE HEAVY
RAINFALL. NEAR STEADY TEMPERATURE IN THE UPPER 40S. CHANCE OF
RAIN 70 PERCENT.
SUNDAY
AREAS OF FOG IN THE MORNING. PARTLY CLOUDY WITH A
CHANCE OF SHOWERS. A SLIGHT CHANCE OF THUNDERSTORMS IN THE
AFTERNOON. HIGHS IN THE MID 60S. CHANCE OF RAIN 30 PERCENT.
SUNDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN CLEARING. LOWS
IN THE LOWER 40S.
MONDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 60S.
MONDAY NIGHT
MOSTLY CLEAR. LOWS IN THE LOWER 40S.
TUESDAY
PARTLY CLOUDY IN THE MORNING, THEN CLEARING. HIGHS IN
THE LOWER 70S.
TUESDAY NIGHT
A SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING.
PARTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS. LOWS IN THE UPPER
40S. CHANCE OF RAIN 20 PERCENT.
WEDNESDAY
PARTLY CLOUDY IN THE MORNING, THEN CLEARING. HIGHS
IN THE MID 70S.
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 40S.
THURSDAY
SUNNY. HIGHS IN THE UPPER 70S.
THURSDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 40S.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 70S.
FRIDAY NIGHT
MOSTLY CLEAR. LOWS AROUND 50.
SATURDAY
PARTLY CLOUDY IN THE MORNING, THEN CLEARING. HIGHS
AROUND 80.
WYZ028-201000-
ROCK SPRINGS AND GREEN RIVER-
INCLUDING THE CITIES OF ROCK SPRINGS AND GREEN RIVER
217 AM MDT SUN SEP 20 2026
REST OF TONIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 30S. WEST
WINDS AROUND 10 MPH.
SUNDAY
MOSTLY SUNNY. HIGHS IN THE MID 60S. WEST WINDS AROUND
10 MPH.
SUNDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 30S.
MONDAY
MOSTLY SUNNY. HIGHS IN THE MID 60S.
MONDAY NIGHT
PARTLY CLOUDY. LOWS AROUND 40.
TUESDAY
PARTLY CLOUDY. A CHANCE OF SHOWERS WITH A SLIGHT
CHANCE OF THUNDERSTORMS IN THE AFTERNOON. HIGHS AROUND 70. CHANCE
OF RAIN 30 PERCENT.
TUESDAY NIGHT
MOSTLY CLOUDY IN THE EVENING, THEN BECOMING
PARTLY CLOUDY. A SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING. A
CHANCE OF SHOWERS. LOWS AROUND 40. CHANCE OF RAIN 30 PERCENT.
WEDNESDAY
PARTLY CLOUDY IN THE MORNING, THEN CLEARING. A
SLIGHT CHANCE OF. HIGHS AROUND 70.
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS AROUND 40.
THURSDAY
SUNNY. HIGHS IN THE LOWER 70S.
THURSDAY NIGHT
MOSTLY CLEAR. LOWS IN THE LOWER 40S.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 70S.
FRIDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN CLEARING. LOWS
IN THE MID 40S.
SATURDAY
PARTLY CLOUDY IN THE MORNING, THEN CLEARING. A SLIGHT
CHANCE OF. HIGHS IN THE MID 70S.
WYZ013-201000-
JACKSON HOLE-
INCLUDING THE CITY OF JACKSON
217 AM MDT SUN SEP 20 2026
REST OF TONIGHT
PARTLY CLOUDY. AREAS OF FOG. NEAR STEADY
TEMPERATURE IN THE UPPER 30S.
SUNDAY
PARTLY CLOUDY. AREAS OF FOG IN THE MORNING. A SLIGHT
CHANCE OF. A SLIGHT CHANCE OF. HIGHS AROUND 60.
SUNDAY NIGHT
MOSTLY CLEAR. LOWS IN THE LOWER 30S.
MONDAY
SUNNY. HIGHS IN THE UPPER 60S.
MONDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 30S.
TUESDAY
PARTLY CLOUDY. HIGHS AROUND 70.
TUESDAY NIGHT
MOSTLY CLOUDY WITH A SLIGHT CHANCE OF
THUNDERSTORMS. A SLIGHT CHANCE OF SHOWERS IN THE EVENING, THEN A
CHANCE OF SHOWERS AFTER MIDNIGHT. LOWS AROUND 40. CHANCE OF RAIN
40 PERCENT.
WEDNESDAY
PARTLY CLOUDY IN THE MORNING, THEN CLEARING. HIGHS
IN THE UPPER 60S.
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 30S.
THURSDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 70S.
THURSDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 30S.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 70S.
FRIDAY NIGHT
MOSTLY CLEAR. LOWS IN THE LOWER 40S.
SATURDAY
PARTLY CLOUDY IN THE MORNING, THEN CLEARING. A SLIGHT
CHANCE OF. HIGHS IN THE UPPER 60S.
WYZ003-201000-
CODY FOOTHILLS-
INCLUDING THE CITIES OF CLARK, CODY, AND MEETEETSE
217 AM MDT SUN SEP 20 2026
REST OF TONIGHT
CLOUDY. AREAS OF FOG. NEAR STEADY TEMPERATURE
IN THE MID 40S. NORTHWEST WINDS AROUND 10 MPH WITH GUSTS UP TO
20 MPH.
SUNDAY
MOSTLY CLOUDY. HIGHS AROUND 60. NORTH WINDS AROUND
10 MPH IN THE AFTERNOON.
SUNDAY NIGHT
MOSTLY CLOUDY IN THE EVENING, THEN BECOMING
PARTLY CLOUDY. LOWS IN THE LOWER 40S. NORTH WINDS AROUND 10 MPH
IN THE EVENING.
MONDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 60S. SOUTHEAST WINDS
AROUND 10 MPH WITH GUSTS UP TO 20 MPH IN THE AFTERNOON.
MONDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 40S. SOUTH WINDS
AROUND 10 MPH, BECOMING SOUTHWEST AFTER MIDNIGHT.
TUESDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 70S.
TUESDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS. LOWS
AROUND 50. CHANCE OF RAIN 20 PERCENT.
WEDNESDAY
PARTLY CLOUDY IN THE MORNING, THEN CLEARING. HIGHS
IN THE LOWER 70S.
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS AROUND 50.
THURSDAY
MOSTLY SUNNY. HIGHS IN THE MID 70S.
THURSDAY NIGHT
MOSTLY CLEAR IN THE EVENING, THEN BECOMING
PARTLY CLOUDY. LOWS AROUND 50.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 70S.
FRIDAY NIGHT
MOSTLY CLEAR IN THE EVENING, THEN BECOMING PARTLY
CLOUDY. LOWS IN THE LOWER 50S.
SATURDAY
PARTLY CLOUDY IN THE MORNING, THEN CLEARING. A SLIGHT
CHANCE OF. HIGHS IN THE MID 70S.
WYZ004-201000-
NORTH BIGHORN BASIN-
INCLUDING THE CITIES OF BASIN, GREYBULL, LOVELL, POWELL,
AND SHELL
217 AM MDT SUN SEP 20 2026
REST OF TONIGHT
CLOUDY WITH SHOWERS LIKELY. BREEZY. NEAR
STEADY TEMPERATURE IN THE UPPER 40S. NORTHWEST WINDS 15 TO 20 MPH
WITH GUSTS UP TO 35 MPH. CHANCE OF RAIN 60 PERCENT.
SUNDAY
MOSTLY CLOUDY. SHOWERS LIKELY IN THE MORNING, THEN A
CHANCE OF SHOWERS WITH A SLIGHT CHANCE OF THUNDERSTORMS IN THE
AFTERNOON. HIGHS IN THE MID 60S. NORTHWEST WINDS 10 TO 15 MPH.
GUSTS UP TO 30 MPH IN THE MORNING. CHANCE OF RAIN 60 PERCENT.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 40S. NORTHWEST
WINDS AROUND 10 MPH WITH GUSTS UP TO 20 MPH IN THE EVENING.
MONDAY
MOSTLY SUNNY. HIGHS AROUND 70. SOUTHEAST WINDS AROUND
10 MPH WITH GUSTS UP TO 20 MPH IN THE AFTERNOON.
MONDAY NIGHT
CLEAR. LOWS IN THE MID 40S. SOUTHEAST WINDS
AROUND 10 MPH IN THE EVENING.
TUESDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 70S.
TUESDAY NIGHT
PARTLY CLOUDY. A CHANCE OF SHOWERS WITH A SLIGHT
CHANCE OF THUNDERSTORMS AFTER MIDNIGHT. LOWS AROUND 50. CHANCE OF
RAIN 30 PERCENT.
WEDNESDAY
PARTLY CLOUDY IN THE MORNING, THEN CLEARING. HIGHS
IN THE UPPER 70S.
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS AROUND 50.
THURSDAY
SUNNY. HIGHS AROUND 80.
THURSDAY NIGHT
MOSTLY CLEAR. LOWS AROUND 50.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 80S.
FRIDAY NIGHT
MOSTLY CLEAR. LOWS AROUND 50.
SATURDAY
MOSTLY SUNNY. HIGHS AROUND 80.
WYZ006-201000-
SOUTHEAST BIGHORN BASIN-
INCLUDING THE CITIES OF TEN SLEEP AND WORLAND
217 AM MDT SUN SEP 20 2026
REST OF TONIGHT
SHOWERS. LOWS IN THE UPPER 40S. NORTHWEST
WINDS 10 TO 15 MPH WITH GUSTS UP TO 30 MPH. CHANCE OF RAIN
80 PERCENT.
SUNDAY
CLOUDY. SHOWERS LIKELY IN THE MORNING, THEN A CHANCE OF
SHOWERS WITH A SLIGHT CHANCE OF THUNDERSTORMS IN THE AFTERNOON.
HIGHS IN THE LOWER 60S. NORTHWEST WINDS 10 TO 15 MPH. CHANCE OF
RAIN 60 PERCENT.
SUNDAY NIGHT
MOSTLY CLOUDY IN THE EVENING, THEN BECOMING
PARTLY CLOUDY. LOWS IN THE LOWER 40S.
MONDAY
MOSTLY SUNNY. HIGHS AROUND 70.
MONDAY NIGHT
CLEAR. LOWS IN THE MID 40S. SOUTHEAST WINDS
AROUND 10 MPH.
TUESDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 70S.
TUESDAY NIGHT
PARTLY CLOUDY. A SLIGHT CHANCE OF SHOWERS AFTER
MIDNIGHT. LOWS IN THE UPPER 40S. CHANCE OF RAIN 20 PERCENT.
WEDNESDAY
PARTLY CLOUDY IN THE MORNING, THEN CLEARING. HIGHS
IN THE UPPER 70S.
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 40S.
THURSDAY
SUNNY. HIGHS AROUND 80.
THURSDAY NIGHT
MOSTLY CLEAR. LOWS AROUND 50.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 80S.
FRIDAY NIGHT
MOSTLY CLEAR. LOWS IN THE LOWER 50S.
SATURDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 80S.
WYZ005-201000-
SOUTHWEST BIGHORN BASIN-
INCLUDING THE CITY OF THERMOPOLIS
217 AM MDT SUN SEP 20 2026
REST OF TONIGHT
SHOWERS. PATCHY FOG. LOWS IN THE UPPER 40S.
NORTHWEST WINDS 10 TO 15 MPH. CHANCE OF RAIN 80 PERCENT.
SUNDAY
MOSTLY CLOUDY. SHOWERS LIKELY IN THE MORNING. AREAS OF
FOG IN THE MORNING. HIGHS IN THE LOWER 60S. NORTHWEST WINDS
AROUND 10 MPH. CHANCE OF RAIN 60 PERCENT.
SUNDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN CLEARING. LOWS
IN THE LOWER 40S.
MONDAY
MOSTLY SUNNY. HIGHS AROUND 70. SOUTHEAST WINDS AROUND
10 MPH IN THE AFTERNOON.
MONDAY NIGHT
CLEAR. LOWS IN THE MID 40S. SOUTHEAST WINDS
AROUND 10 MPH IN THE EVENING.
TUESDAY
MOSTLY SUNNY. HIGHS IN THE MID 70S.
TUESDAY NIGHT
PARTLY CLOUDY. A SLIGHT CHANCE OF SHOWERS AFTER
MIDNIGHT. LOWS AROUND 50. CHANCE OF RAIN 20 PERCENT.
WEDNESDAY
PARTLY CLOUDY IN THE MORNING, THEN CLEARING. HIGHS
IN THE MID 70S.
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS AROUND 50.
THURSDAY
SUNNY. HIGHS AROUND 80.
THURSDAY NIGHT
MOSTLY CLEAR. LOWS AROUND 50.
FRIDAY
MOSTLY SUNNY. HIGHS AROUND 80.
FRIDAY NIGHT
MOSTLY CLEAR. LOWS IN THE LOWER 50S.
SATURDAY
MOSTLY SUNNY. HIGHS AROUND 80.
WYZ023-201000-
STAR VALLEY-
INCLUDING THE CITIES OF AFTON, ALPINE, STAR VALLEY RANCH,
AND THAYNE
217 AM MDT SUN SEP 20 2026
REST OF TONIGHT
MOSTLY CLEAR. AREAS OF FOG. LOWS IN THE MID
30S.
SUNDAY
MOSTLY SUNNY IN THE MORNING, THEN BECOMING PARTLY
CLOUDY. AREAS OF FOG IN THE MORNING. HIGHS IN THE LOWER 60S.
SUNDAY NIGHT
MOSTLY CLEAR. LOWS IN THE LOWER 30S.
MONDAY
MOSTLY SUNNY. HIGHS AROUND 70.
MONDAY NIGHT
MOSTLY CLEAR IN THE EVENING, THEN BECOMING PARTLY
CLOUDY. LOWS IN THE UPPER 30S.
TUESDAY
PARTLY CLOUDY. A SLIGHT CHANCE OF. HIGHS IN THE LOWER
70S.
TUESDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS WITH A
SLIGHT CHANCE OF THUNDERSTORMS. LOWS AROUND 40. CHANCE OF RAIN
40 PERCENT.
WEDNESDAY
PARTLY CLOUDY IN THE MORNING, THEN CLEARING. HIGHS
AROUND 70.
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 30S.
THURSDAY
SUNNY. HIGHS IN THE MID 70S.
THURSDAY NIGHT
MOSTLY CLEAR. LOWS AROUND 40.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE MID 70S.
FRIDAY NIGHT
MOSTLY CLEAR. LOWS IN THE LOWER 40S.
SATURDAY
PARTLY CLOUDY IN THE MORNING, THEN CLEARING. A SLIGHT
CHANCE OF. HIGHS IN THE LOWER 70S.
WYZ025-201000-
UPPER GREEN RIVER BASIN FOOTHILLS-
INCLUDING THE CITY OF PINEDALE
217 AM MDT SUN SEP 20 2026
REST OF TONIGHT
PARTLY CLOUDY. AREAS OF FOG. LOWS IN THE MID
30S.
SUNDAY
AREAS OF FOG IN THE MORNING. PARTLY CLOUDY. HIGHS
AROUND 60. NORTHWEST WINDS AROUND 10 MPH WITH GUSTS UP TO 20 MPH
IN THE AFTERNOON.
SUNDAY NIGHT
MOSTLY CLEAR. LOWS IN THE LOWER 30S. NORTHWEST
WINDS AROUND 10 MPH WITH GUSTS UP TO 20 MPH IN THE EVENING.
MONDAY
MOSTLY SUNNY. HIGHS IN THE MID 60S.
MONDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 30S.
TUESDAY
PARTLY CLOUDY. HIGHS IN THE UPPER 60S.
TUESDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS WITH A
SLIGHT CHANCE OF THUNDERSTORMS. LOWS AROUND 40. CHANCE OF RAIN
40 PERCENT.
WEDNESDAY
PARTLY CLOUDY IN THE MORNING, THEN CLEARING. HIGHS
IN THE MID 60S.
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 30S.
THURSDAY
SUNNY. HIGHS AROUND 70.
THURSDAY NIGHT
MOSTLY CLEAR. LOWS AROUND 40.
FRIDAY
MOSTLY SUNNY. HIGHS AROUND 70.
FRIDAY NIGHT
MOSTLY CLEAR. LOWS AROUND 40.
SATURDAY
PARTLY CLOUDY IN THE MORNING, THEN CLEARING. A SLIGHT
CHANCE OF. HIGHS IN THE UPPER 60S.
WYZ026-201000-
UPPER GREEN RIVER BASIN-
INCLUDING THE CITIES OF LA BARGE, BIG PINEY, AND FARSON
217 AM MDT SUN SEP 20 2026
REST OF TONIGHT
PARTLY CLOUDY WITH A 30 PERCENT CHANCE OF RAIN
SHOWERS. AREAS OF FOG. LOWS IN THE MID 30S.
SUNDAY
MOSTLY SUNNY IN THE MORNING, THEN BECOMING PARTLY
CLOUDY. AREAS OF FOG IN THE MORNING. HIGHS IN THE LOWER 60S. WEST
WINDS AROUND 10 MPH WITH GUSTS UP TO 20 MPH IN THE AFTERNOON.
SUNDAY NIGHT
MOSTLY CLEAR. LOWS IN THE LOWER 30S. NORTHWEST
WINDS AROUND 10 MPH IN THE EVENING.
MONDAY
MOSTLY SUNNY. HIGHS IN THE MID 60S.
MONDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 30S.
TUESDAY
PARTLY CLOUDY. HIGHS IN THE UPPER 60S.
TUESDAY NIGHT
MOSTLY CLOUDY IN THE EVENING, THEN BECOMING
PARTLY CLOUDY. A CHANCE OF SHOWERS WITH A SLIGHT CHANCE OF
THUNDERSTORMS. LOWS IN THE UPPER 30S. CHANCE OF RAIN 30 PERCENT.
WEDNESDAY
PARTLY CLOUDY IN THE MORNING, THEN CLEARING. A
SLIGHT CHANCE OF. HIGHS IN THE UPPER 60S.
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 30S.
THURSDAY
SUNNY. HIGHS AROUND 70.
THURSDAY NIGHT
MOSTLY CLEAR. LOWS AROUND 40.
FRIDAY
MOSTLY SUNNY. HIGHS AROUND 70.
FRIDAY NIGHT
MOSTLY CLEAR. LOWS AROUND 40.
SATURDAY
PARTLY CLOUDY IN THE MORNING, THEN CLEARING. HIGHS
AROUND 70.
WYZ010-201000-
NORTHEAST JOHNSON COUNTY-
INCLUDING THE CITY OF BUFFALO
217 AM MDT SUN SEP 20 2026
..FLOOD WATCH IN EFFECT THROUGH THIS AFTERNOON
REST OF TONIGHT
SHOWERS LIKELY WITH A SLIGHT CHANCE OF
THUNDERSTORMS. SOME THUNDERSTORMS MAY PRODUCE HEAVY RAINFALL.
NEAR STEADY TEMPERATURE IN THE LOWER 50S. NORTHWEST WINDS 10 TO
15 MPH WITH GUSTS UP TO 25 MPH. CHANCE OF RAIN 60 PERCENT.
SUNDAY
SHOWERS. A SLIGHT CHANCE OF THUNDERSTORMS IN THE
MORNING, THEN A CHANCE OF THUNDERSTORMS IN THE AFTERNOON. SOME
THUNDERSTORMS MAY PRODUCE HEAVY RAINFALL IN THE MORNING. SOME
THUNDERSTORMS MAY PRODUCE HEAVY RAINFALL IN THE AFTERNOON. HIGHS
AROUND 60. NORTHWEST WINDS 10 TO 15 MPH WITH GUSTS UP TO 30 MPH.
CHANCE OF RAIN 80 PERCENT.
SUNDAY NIGHT
CLOUDY. A CHANCE OF SHOWERS WITH A SLIGHT CHANCE
OF THUNDERSTORMS IN THE EVENING. LOWS IN THE UPPER 40S. NORTHWEST
WINDS 10 TO 15 MPH WITH GUSTS UP TO 25 MPH IN THE EVENING. CHANCE
OF RAIN 40 PERCENT.
MONDAY
MOSTLY CLOUDY IN THE MORNING, THEN BECOMING PARTLY
CLOUDY. HIGHS IN THE UPPER 60S. SOUTHEAST WINDS AROUND 10 MPH IN
THE AFTERNOON.
MONDAY NIGHT
MOSTLY CLEAR AND BREEZY. LOWS IN THE UPPER 40S.
SOUTH WINDS 15 TO 20 MPH WITH GUSTS UP TO 35 MPH.
TUESDAY
SUNNY. HIGHS IN THE UPPER 70S.
TUESDAY NIGHT
MOSTLY CLEAR IN THE EVENING, THEN BECOMING
PARTLY CLOUDY. A SLIGHT CHANCE OF. LOWS AROUND 50.
WEDNESDAY
PARTLY CLOUDY IN THE MORNING, THEN CLEARING. HIGHS
IN THE MID 70S.
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS AROUND 50.
THURSDAY
SUNNY. HIGHS AROUND 80.
THURSDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 50S.
FRIDAY
MOSTLY SUNNY AND BREEZY. HIGHS IN THE LOWER 80S.
FRIDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 50S.
SATURDAY
MOSTLY SUNNY. HIGHS AROUND 80.
WYZ011-201000-
SOUTHEAST JOHNSON COUNTY-
INCLUDING THE CITY OF KAYCEE
217 AM MDT SUN SEP 20 2026
..FLOOD WATCH IN EFFECT THROUGH THIS AFTERNOON
REST OF TONIGHT
SHOWERS LIKELY WITH A CHANCE OF THUNDERSTORMS.
SOME THUNDERSTORMS MAY PRODUCE HEAVY RAINFALL. NEAR STEADY
TEMPERATURE AROUND 50. NORTH WINDS AROUND 10 MPH WITH GUSTS UP TO
20 MPH. CHANCE OF RAIN 60 PERCENT.
SUNDAY
SHOWERS LIKELY WITH A SLIGHT CHANCE OF THUNDERSTORMS IN
THE MORNING, THEN SHOWERS WITH A CHANCE OF THUNDERSTORMS IN THE
AFTERNOON. SOME THUNDERSTORMS MAY PRODUCE HEAVY RAINFALL IN THE
MORNING. SOME THUNDERSTORMS MAY PRODUCE HEAVY RAINFALL IN THE
AFTERNOON. HIGHS IN THE LOWER 60S. NORTH WINDS AROUND 10 MPH WITH
GUSTS UP TO 25 MPH. CHANCE OF RAIN 90 PERCENT.
SUNDAY NIGHT
CLOUDY. A CHANCE OF SHOWERS WITH A SLIGHT CHANCE
OF THUNDERSTORMS IN THE EVENING. LOWS IN THE MID 40S. NORTH WINDS
AROUND 10 MPH WITH GUSTS UP TO 20 MPH IN THE EVENING. CHANCE OF
RAIN 30 PERCENT.
MONDAY
PARTLY CLOUDY IN THE MORNING, THEN CLEARING. HIGHS IN
THE UPPER 60S.
MONDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 40S. SOUTH WINDS
10 TO 15 MPH WITH GUSTS UP TO 35 MPH.
TUESDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 70S.
TUESDAY NIGHT
MOSTLY CLEAR IN THE EVENING, THEN BECOMING
PARTLY CLOUDY. LOWS IN THE UPPER 40S.
WEDNESDAY
PARTLY CLOUDY IN THE MORNING, THEN CLEARING. HIGHS
IN THE UPPER 70S.
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 40S.
THURSDAY
SUNNY. HIGHS AROUND 80.
THURSDAY NIGHT
MOSTLY CLEAR. LOWS AROUND 50.
FRIDAY
MOSTLY SUNNY AND BREEZY. HIGHS IN THE LOWER 80S.
FRIDAY NIGHT
MOSTLY CLEAR. LOWS IN THE LOWER 50S.
SATURDAY
MOSTLY SUNNY. HIGHS AROUND 80.
WYZ027-201000-
SOUTH LINCOLN COUNTY-
INCLUDING THE CITIES OF KEMMERER AND COKEVILLE
217 AM MDT SUN SEP 20 2026
REST OF TONIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 30S. NORTHWEST
WINDS AROUND 10 MPH.
SUNDAY
AREAS OF FOG IN THE MORNING. MOSTLY SUNNY. HIGHS IN THE
LOWER 60S. WEST WINDS AROUND 10 MPH.
SUNDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 30S. NORTHWEST
WINDS AROUND 10 MPH IN THE EVENING.
MONDAY
MOSTLY SUNNY. HIGHS IN THE MID 60S.
MONDAY NIGHT
MOSTLY CLEAR IN THE EVENING, THEN BECOMING PARTLY
CLOUDY. LOWS IN THE UPPER 30S.
TUESDAY
PARTLY CLOUDY. A CHANCE OF RAIN SHOWERS WITH A SLIGHT
CHANCE OF THUNDERSTORMS IN THE AFTERNOON. HIGHS IN THE UPPER 60S.
CHANCE OF RAIN 30 PERCENT.
TUESDAY NIGHT
MOSTLY CLOUDY IN THE EVENING, THEN BECOMING
PARTLY CLOUDY. A SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING. A
CHANCE OF SHOWERS. LOWS AROUND 40. CHANCE OF RAIN 30 PERCENT.
WEDNESDAY
MOSTLY SUNNY. HIGHS AROUND 70.
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS AROUND 40.
THURSDAY
SUNNY. HIGHS AROUND 70.
THURSDAY NIGHT
MOSTLY CLEAR. LOWS AROUND 40.
FRIDAY
MOSTLY SUNNY. HIGHS AROUND 70.
FRIDAY NIGHT
MOSTLY CLEAR. LOWS IN THE LOWER 40S.
SATURDAY
PARTLY CLOUDY IN THE MORNING, THEN CLEARING. HIGHS
AROUND 70.
WYZ016-201000-
UPPER WIND RIVER BASIN-
INCLUDING THE CITY OF DUBOIS
217 AM MDT SUN SEP 20 2026
REST OF TONIGHT
MOSTLY CLOUDY WITH RAIN SHOWERS LIKELY. AREAS
OF FOG. NEAR STEADY TEMPERATURE IN THE LOWER 40S. CHANCE OF RAIN
60 PERCENT.
SUNDAY
AREAS OF FOG IN THE MORNING. PARTLY CLOUDY WITH A
CHANCE OF RAIN SHOWERS. A SLIGHT CHANCE OF THUNDERSTORMS IN THE
AFTERNOON. HIGHS AROUND 60. SOUTHEAST WINDS AROUND 10 MPH WITH
GUSTS UP TO 20 MPH IN THE AFTERNOON. CHANCE OF RAIN 30 PERCENT.
SUNDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF RAIN SHOWERS WITH
A SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING, THEN PARTLY
CLOUDY AFTER MIDNIGHT. LOWS IN THE UPPER 30S. SOUTHEAST WINDS
AROUND 10 MPH IN THE EVENING. CHANCE OF RAIN 30 PERCENT.
MONDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 60S. SOUTHEAST WINDS
AROUND 10 MPH WITH GUSTS UP TO 20 MPH IN THE AFTERNOON.
MONDAY NIGHT
MOSTLY CLEAR. LOWS AROUND 40. SOUTHEAST WINDS
AROUND 10 MPH WITH GUSTS UP TO 20 MPH, BECOMING WEST AFTER
MIDNIGHT.
TUESDAY
PARTLY CLOUDY IN THE MORNING, THEN CLEARING. HIGHS IN
THE MID 60S.
TUESDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. A SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING. A
CHANCE OF SHOWERS. LOWS IN THE LOWER 40S. CHANCE OF RAIN
30 PERCENT.
WEDNESDAY
PARTLY CLOUDY IN THE MORNING, THEN CLEARING. HIGHS
IN THE UPPER 60S.
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS IN THE LOWER 40S.
THURSDAY
SUNNY. HIGHS AROUND 70.
THURSDAY NIGHT
MOSTLY CLEAR. LOWS IN THE LOWER 40S.
FRIDAY
MOSTLY SUNNY. HIGHS AROUND 70.
FRIDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 40S.
SATURDAY
MOSTLY SUNNY. A SLIGHT CHANCE OF. HIGHS IN THE UPPER
60S.
WYZ001-201000-
YELLOWSTONE NATIONAL PARK-
INCLUDING THE CITIES OF LAKE, MAMMOTH, AND OLD FAITHFUL
217 AM MDT SUN SEP 20 2026
REST OF TONIGHT
MOSTLY CLOUDY. AREAS OF FOG. NEAR STEADY
TEMPERATURE IN THE MID 30S.
SUNDAY
AREAS OF FOG IN THE MORNING. MOSTLY CLOUDY WITH A
CHANCE OF RAIN SHOWERS. A SLIGHT CHANCE OF THUNDERSTORMS IN THE
AFTERNOON. SOME THUNDERSTORMS MAY PRODUCE HEAVY RAINFALL IN THE
AFTERNOON. HIGHS IN THE LOWER 50S. CHANCE OF RAIN 30 PERCENT.
SUNDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN CLEARING. LOWS
IN THE LOWER 30S.
MONDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 60S.
MONDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 30S.
TUESDAY
MOSTLY SUNNY. HIGHS IN THE MID 60S.
TUESDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. A SLIGHT CHANCE OF THUNDERSTORMS. A SLIGHT CHANCE
OF RAIN SHOWERS IN THE EVENING, THEN A CHANCE OF RAIN SHOWERS
AFTER MIDNIGHT. LOWS IN THE UPPER 30S. CHANCE OF RAIN 30 PERCENT.
WEDNESDAY
PARTLY CLOUDY IN THE MORNING, THEN CLEARING. HIGHS
IN THE LOWER 60S.
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 30S.
THURSDAY
MOSTLY SUNNY. HIGHS IN THE MID 60S.
THURSDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 30S.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE MID 60S.
FRIDAY NIGHT
MOSTLY CLEAR. LOWS AROUND 40.
SATURDAY
PARTLY CLOUDY. A SLIGHT CHANCE OF. HIGHS IN THE LOWER
60S.
WYZ029-201000-
FLAMING GORGE-
217 AM MDT SUN SEP 20 2026
REST OF TONIGHT
MOSTLY CLEAR. LOWS IN THE LOWER 40S.
SUNDAY
MOSTLY SUNNY. HIGHS IN THE MID 60S. WEST WINDS AROUND
10 MPH.
SUNDAY NIGHT
MOSTLY CLEAR. LOWS AROUND 40.
MONDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 60S.
MONDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 40S.
TUESDAY
PARTLY CLOUDY. A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE AFTERNOON. HIGHS AROUND 70. CHANCE OF RAIN
20 PERCENT.
TUESDAY NIGHT
A SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING.
PARTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS IN THE MID 40S.
CHANCE OF RAIN 30 PERCENT.
WEDNESDAY
PARTLY CLOUDY IN THE MORNING, THEN CLEARING. A
SLIGHT CHANCE OF. HIGHS IN THE UPPER 60S.
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 40S.
THURSDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 70S.
THURSDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 40S.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 70S.
FRIDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN CLEARING. LOWS
AROUND 50.
SATURDAY
PARTLY CLOUDY IN THE MORNING, THEN CLEARING. A SLIGHT
CHANCE OF. HIGHS IN THE MID 70S.
WYZ022-201000-
CASPER MOUNTAIN-
217 AM MDT SUN SEP 20 2026
REST OF TONIGHT
SHOWERS LIKELY WITH A CHANCE OF THUNDERSTORMS.
SOME THUNDERSTORMS MAY PRODUCE HEAVY RAINFALL. NEAR STEADY
TEMPERATURE IN THE UPPER 40S. WEST WINDS AROUND 10 MPH. CHANCE OF
RAIN 70 PERCENT.
SUNDAY
SHOWERS LIKELY. A SLIGHT CHANCE OF THUNDERSTORMS IN THE
MORNING, THEN A CHANCE OF THUNDERSTORMS IN THE AFTERNOON. SOME
THUNDERSTORMS MAY PRODUCE HEAVY RAINFALL IN THE MORNING. HIGHS IN
THE MID 50S. WEST WINDS 10 TO 15 MPH WITH GUSTS UP TO 25 MPH.
CHANCE OF RAIN 70 PERCENT.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 30S. NORTHWEST
WINDS AROUND 10 MPH WITH GUSTS UP TO 20 MPH IN THE EVENING.
MONDAY
MOSTLY SUNNY. HIGHS AROUND 60.
MONDAY NIGHT
MOSTLY CLEAR. LOWS IN THE LOWER 40S. SOUTHEAST
WINDS 10 TO 15 MPH WITH GUSTS UP TO 25 MPH.
TUESDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 60S.
TUESDAY NIGHT
MOSTLY CLEAR IN THE EVENING, THEN BECOMING
PARTLY CLOUDY. A SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING. A
SLIGHT CHANCE OF SHOWERS. LOWS IN THE UPPER 40S. CHANCE OF RAIN
20 PERCENT.
WEDNESDAY
PARTLY CLOUDY IN THE MORNING, THEN CLEARING. HIGHS
IN THE UPPER 60S.
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 40S.
THURSDAY
MOSTLY SUNNY. HIGHS AROUND 70.
THURSDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 40S.
FRIDAY
MOSTLY SUNNY. HIGHS AROUND 70.
FRIDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 40S.
SATURDAY
MOSTLY SUNNY. HIGHS AROUND 70.
WYZ002-201000-
ABSAROKA MOUNTAINS-
217 AM MDT SUN SEP 20 2026
REST OF TONIGHT
CLOUDY WITH RAIN AND SNOW SHOWERS LIKELY.
PATCHY FOG. LITTLE OR NO SNOW ACCUMULATION. NEAR STEADY
TEMPERATURE IN THE UPPER 30S. CHANCE OF PRECIPITATION 70 PERCENT.
SUNDAY
MOSTLY CLOUDY. RAIN SHOWERS LIKELY WITH A SLIGHT CHANCE
OF THUNDERSTORMS IN THE AFTERNOON. SOME THUNDERSTORMS MAY PRODUCE
HEAVY RAINFALL IN THE AFTERNOON. HIGHS AROUND 50. NORTHWEST WINDS
AROUND 10 MPH. CHANCE OF RAIN 60 PERCENT.
SUNDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF RAIN SHOWERS WITH
A SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING, THEN PARTLY
CLOUDY AFTER MIDNIGHT. LOWS IN THE MID 30S. NORTHWEST WINDS
AROUND 10 MPH IN THE EVENING. CHANCE OF RAIN 30 PERCENT.
MONDAY
MOSTLY SUNNY. HIGHS IN THE MID 50S. SOUTHWEST WINDS
AROUND 10 MPH WITH GUSTS UP TO 20 MPH IN THE AFTERNOON.
MONDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 30S. SOUTH WINDS
AROUND 10 MPH, BECOMING SOUTHWEST AFTER MIDNIGHT.
TUESDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 50S.
TUESDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. A CHANCE OF RAIN SHOWERS WITH A SLIGHT CHANCE OF
THUNDERSTORMS. LOWS IN THE LOWER 40S. CHANCE OF RAIN 30 PERCENT.
WEDNESDAY
PARTLY CLOUDY IN THE MORNING, THEN CLEARING. A
CHANCE OF RAIN SHOWERS. A SLIGHT CHANCE OF THUNDERSTORMS IN THE
AFTERNOON. HIGHS IN THE UPPER 50S. CHANCE OF RAIN 30 PERCENT.
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 30S.
THURSDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 60S.
THURSDAY NIGHT
MOSTLY CLEAR. LOWS IN THE LOWER 40S.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 60S.
FRIDAY NIGHT
MOSTLY CLEAR AND BREEZY. LOWS IN THE LOWER 40S.
SATURDAY
PARTLY CLOUDY IN THE MORNING, THEN CLEARING. A SLIGHT
CHANCE OF. BREEZY WITH HIGHS AROUND 60.
WYZ007-201000-
OWL CREEK AND BRIDGER MOUNTAINS-
217 AM MDT SUN SEP 20 2026
..FLOOD WATCH IN EFFECT THROUGH THIS AFTERNOON
REST OF TONIGHT
SHOWERS WITH A SLIGHT CHANCE OF THUNDERSTORMS.
SOME THUNDERSTORMS MAY PRODUCE HEAVY RAINFALL. LOWS IN THE MID
40S. NORTHWEST WINDS 10 TO 15 MPH WITH GUSTS UP TO 25 MPH. CHANCE
OF RAIN 80 PERCENT.
SUNDAY
MOSTLY CLOUDY. SHOWERS LIKELY IN THE MORNING, THEN A
CHANCE OF SHOWERS WITH A SLIGHT CHANCE OF THUNDERSTORMS IN THE
AFTERNOON. SOME THUNDERSTORMS MAY PRODUCE HEAVY RAINFALL IN THE
AFTERNOON. HIGHS IN THE UPPER 50S. NORTH WINDS 10 TO 15 MPH.
CHANCE OF RAIN 60 PERCENT.
SUNDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN CLEARING. LOWS
IN THE LOWER 40S. NORTH WINDS AROUND 10 MPH IN THE EVENING.
MONDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 60S. SOUTH WINDS
AROUND 10 MPH IN THE AFTERNOON.
MONDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 40S. SOUTH WINDS
AROUND 10 MPH.
TUESDAY
MOSTLY SUNNY. HIGHS AROUND 70.
TUESDAY NIGHT
A SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING.
PARTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS. LOWS IN THE UPPER
40S. CHANCE OF RAIN 20 PERCENT.
WEDNESDAY
PARTLY CLOUDY IN THE MORNING, THEN CLEARING. HIGHS
AROUND 70.
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 40S.
THURSDAY
SUNNY. HIGHS IN THE LOWER 70S.
THURSDAY NIGHT
MOSTLY CLEAR. LOWS AROUND 50.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE MID 70S.
FRIDAY NIGHT
MOSTLY CLEAR. LOWS IN THE LOWER 50S.
SATURDAY
MOSTLY SUNNY. HIGHS IN THE MID 70S.
WYZ008-201000-
BIGHORN MOUNTAINS WEST-
217 AM MDT SUN SEP 20 2026
..FLOOD WATCH IN EFFECT THROUGH THIS AFTERNOON
REST OF TONIGHT
RAIN SHOWERS WITH A SLIGHT CHANCE OF
THUNDERSTORMS. PATCHY FOG. SOME THUNDERSTORMS MAY PRODUCE HEAVY
RAINFALL. NEAR STEADY TEMPERATURE IN THE LOWER 40S. NORTHWEST
WINDS AROUND 10 MPH. CHANCE OF RAIN 80 PERCENT.
SUNDAY
PATCHY FOG IN THE MORNING. A SLIGHT CHANCE OF
THUNDERSTORMS. RAIN SHOWERS. SOME THUNDERSTORMS MAY PRODUCE HEAVY
RAINFALL. HIGHS AROUND 50. NORTHWEST WINDS AROUND 10 MPH. CHANCE
OF RAIN 80 PERCENT.
SUNDAY NIGHT
MOSTLY CLOUDY. A CHANCE OF RAIN SHOWERS WITH A
SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING. LOWS AROUND 40.
NORTHWEST WINDS AROUND 10 MPH IN THE EVENING. CHANCE OF RAIN
30 PERCENT.
MONDAY
PARTLY CLOUDY IN THE MORNING, THEN CLEARING. HIGHS IN
THE UPPER 50S. SOUTHWEST WINDS AROUND 10 MPH IN THE AFTERNOON.
MONDAY NIGHT
CLEAR. LOWS IN THE LOWER 40S. SOUTHEAST WINDS
10 TO 15 MPH.
TUESDAY
MOSTLY SUNNY. HIGHS IN THE MID 60S.
TUESDAY NIGHT
PARTLY CLOUDY. A CHANCE OF RAIN SHOWERS WITH A
SLIGHT CHANCE OF THUNDERSTORMS AFTER MIDNIGHT. LOWS IN THE UPPER
40S. CHANCE OF RAIN 30 PERCENT.
WEDNESDAY
PARTLY CLOUDY IN THE MORNING, THEN CLEARING. A
CHANCE OF RAIN SHOWERS. A SLIGHT CHANCE OF THUNDERSTORMS IN THE
AFTERNOON. HIGHS IN THE LOWER 60S. CHANCE OF RAIN 30 PERCENT.
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 40S.
THURSDAY
SUNNY. HIGHS IN THE UPPER 60S.
THURSDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 40S.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 60S.
FRIDAY NIGHT
MOSTLY CLEAR. LOWS AROUND 50.
SATURDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 60S.
WYZ009-201000-
BIGHORN MOUNTAINS SOUTHEAST-
217 AM MDT SUN SEP 20 2026
..FLOOD WATCH IN EFFECT THROUGH THIS AFTERNOON
REST OF TONIGHT
RAIN SHOWERS LIKELY WITH A SLIGHT CHANCE OF
THUNDERSTORMS. SOME THUNDERSTORMS MAY PRODUCE HEAVY RAINFALL.
NEAR STEADY TEMPERATURE IN THE MID 40S. NORTHWEST WINDS AROUND
10 MPH. CHANCE OF RAIN 70 PERCENT.
SUNDAY
A SLIGHT CHANCE OF THUNDERSTORMS. RAIN SHOWERS. SOME
THUNDERSTORMS MAY PRODUCE HEAVY RAINFALL. HIGHS AROUND 50.
NORTHWEST WINDS AROUND 10 MPH WITH GUSTS UP TO 20 MPH. CHANCE OF
RAIN 90 PERCENT.
SUNDAY NIGHT
MOSTLY CLOUDY. A CHANCE OF RAIN SHOWERS WITH A
SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING. LOWS IN THE UPPER
30S. NORTHWEST WINDS AROUND 10 MPH IN THE EVENING. CHANCE OF RAIN
30 PERCENT.
MONDAY
PARTLY CLOUDY. A CHANCE OF RAIN SHOWERS IN THE
AFTERNOON. HIGHS IN THE UPPER 50S. SOUTH WINDS AROUND 10 MPH IN
THE AFTERNOON. CHANCE OF RAIN 40 PERCENT.
MONDAY NIGHT
MOSTLY CLEAR. LOWS IN THE LOWER 40S. SOUTH WINDS
AROUND 10 MPH, BECOMING SOUTHWEST AFTER MIDNIGHT.
TUESDAY
MOSTLY SUNNY. HIGHS IN THE MID 60S.
TUESDAY NIGHT
PARTLY CLOUDY WITH A SLIGHT CHANCE OF RAIN
SHOWERS AND THUNDERSTORMS. LOWS IN THE MID 40S. CHANCE OF RAIN
20 PERCENT.
WEDNESDAY
PARTLY CLOUDY IN THE MORNING, THEN CLEARING. A
CHANCE OF RAIN SHOWERS. A SLIGHT CHANCE OF THUNDERSTORMS IN THE
AFTERNOON. HIGHS IN THE MID 60S. CHANCE OF RAIN 30 PERCENT.
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 40S.
THURSDAY
SUNNY. HIGHS IN THE UPPER 60S.
THURSDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 40S.
FRIDAY
MOSTLY SUNNY. HIGHS AROUND 70.
FRIDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 40S.
SATURDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 60S.
WYZ012-201000-
TETON AND GROS VENTRE MOUNTAINS-
217 AM MDT SUN SEP 20 2026
REST OF TONIGHT
MOSTLY CLOUDY. AREAS OF FOG. NEAR STEADY
TEMPERATURE IN THE MID 30S.
SUNDAY
PARTLY CLOUDY. AREAS OF FOG IN THE MORNING. A SLIGHT
CHANCE OF. A SLIGHT CHANCE OF. HIGHS IN THE LOWER 50S. NORTHWEST
WINDS AROUND 10 MPH WITH GUSTS UP TO 20 MPH IN THE AFTERNOON.
SUNDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN CLEARING. LOWS
IN THE LOWER 30S. NORTH WINDS AROUND 10 MPH IN THE EVENING.
MONDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 50S. SOUTHWEST WINDS
AROUND 10 MPH IN THE AFTERNOON.
MONDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 30S. SOUTH WINDS
AROUND 10 MPH, BECOMING EAST AFTER MIDNIGHT.
TUESDAY
PARTLY CLOUDY. HIGHS IN THE LOWER 60S.
TUESDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF RAIN SHOWERS WITH
A SLIGHT CHANCE OF THUNDERSTORMS. LOWS AROUND 40. CHANCE OF RAIN
40 PERCENT.
WEDNESDAY
PARTLY CLOUDY IN THE MORNING, THEN CLEARING. HIGHS
AROUND 60.
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 30S.
THURSDAY
MOSTLY SUNNY. HIGHS IN THE MID 60S.
THURSDAY NIGHT
MOSTLY CLEAR. LOWS AROUND 40.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE MID 60S.
FRIDAY NIGHT
MOSTLY CLEAR. LOWS IN THE LOWER 40S.
SATURDAY
PARTLY CLOUDY. A SLIGHT CHANCE OF. HIGHS IN THE LOWER
60S.
WYZ014-201000-
WIND RIVER MOUNTAINS WEST-
217 AM MDT SUN SEP 20 2026
REST OF TONIGHT
MOSTLY CLOUDY WITH A CHANCE OF RAIN AND SNOW
SHOWERS. AREAS OF FOG. NEAR STEADY TEMPERATURE IN THE MID 30S.
CHANCE OF PRECIPITATION 40 PERCENT.
SUNDAY
PARTLY CLOUDY. AREAS OF FOG IN THE MORNING. A CHANCE OF
RAIN SHOWERS WITH A SLIGHT CHANCE OF THUNDERSTORMS IN THE
AFTERNOON. HIGHS IN THE LOWER 50S. WEST WINDS AROUND 10 MPH WITH
GUSTS UP TO 20 MPH IN THE AFTERNOON. CHANCE OF RAIN 30 PERCENT.
SUNDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN CLEARING. LOWS
IN THE LOWER 30S. NORTH WINDS AROUND 10 MPH IN THE EVENING.
MONDAY
MOSTLY SUNNY. HIGHS IN THE MID 50S. SOUTHWEST WINDS
AROUND 10 MPH WITH GUSTS UP TO 20 MPH IN THE AFTERNOON.
MONDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 30S.
TUESDAY
PARTLY CLOUDY. HIGHS IN THE UPPER 50S.
TUESDAY NIGHT
MOSTLY CLOUDY IN THE EVENING, THEN BECOMING
PARTLY CLOUDY. A CHANCE OF RAIN SHOWERS WITH A SLIGHT CHANCE OF
THUNDERSTORMS. LOWS IN THE UPPER 30S. CHANCE OF RAIN 40 PERCENT.
WEDNESDAY
PARTLY CLOUDY IN THE MORNING, THEN CLEARING. A
CHANCE OF RAIN SHOWERS. HIGHS IN THE UPPER 50S. CHANCE OF RAIN
30 PERCENT.
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 30S.
THURSDAY
SUNNY. HIGHS AROUND 60.
THURSDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 30S.
FRIDAY
MOSTLY SUNNY. HIGHS AROUND 60.
FRIDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 30S.
SATURDAY
PARTLY CLOUDY IN THE MORNING, THEN CLEARING. A SLIGHT
CHANCE OF. HIGHS IN THE UPPER 50S.
WYZ015-201000-
WIND RIVER MOUNTAINS EAST-
217 AM MDT SUN SEP 20 2026
REST OF TONIGHT
MOSTLY CLOUDY WITH RAIN SHOWERS LIKELY WITH
POSSIBLE SNOW SHOWERS AND THUNDERSTORMS. AREAS OF FOG. SOME
THUNDERSTORMS MAY PRODUCE HEAVY RAINFALL. LITTLE OR NO SNOW
ACCUMULATION. NEAR STEADY TEMPERATURE IN THE MID 30S. CHANCE OF
PRECIPITATION 60 PERCENT.
SUNDAY
PARTLY CLOUDY IN THE MORNING, THEN MOSTLY CLOUDY WITH
RAIN SHOWERS LIKELY WITH POSSIBLE SNOW SHOWERS AND THUNDERSTORMS
IN THE AFTERNOON. SNOW ACCUMULATION UP TO 1 INCH. HIGHS IN THE
UPPER 40S. NORTH WINDS AROUND 10 MPH WITH GUSTS UP TO 20 MPH IN
THE AFTERNOON. CHANCE OF PRECIPITATION 60 PERCENT.
SUNDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF RAIN SHOWERS WITH
A SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING, THEN PARTLY
CLOUDY AFTER MIDNIGHT. LOWS IN THE LOWER 30S. CHANCE OF RAIN
30 PERCENT.
MONDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 50S. SOUTH WINDS
AROUND 10 MPH IN THE AFTERNOON.
MONDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 30S. SOUTHWEST
WINDS AROUND 10 MPH AFTER MIDNIGHT.
TUESDAY
PARTLY CLOUDY. A SLIGHT CHANCE OF. HIGHS IN THE UPPER
50S.
TUESDAY NIGHT
MOSTLY CLOUDY IN THE EVENING, THEN BECOMING
PARTLY CLOUDY. A CHANCE OF RAIN SHOWERS WITH A SLIGHT CHANCE OF
THUNDERSTORMS. LOWS IN THE UPPER 30S. CHANCE OF RAIN 50 PERCENT.
WEDNESDAY
PARTLY CLOUDY IN THE MORNING, THEN CLEARING. A
CHANCE OF RAIN SHOWERS. HIGHS IN THE MID 50S. CHANCE OF RAIN
30 PERCENT.
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 30S.
THURSDAY
SUNNY. HIGHS IN THE UPPER 50S.
THURSDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 30S.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 50S.
FRIDAY NIGHT
MOSTLY CLEAR AND BREEZY. LOWS IN THE LOWER 40S.
SATURDAY
PARTLY CLOUDY IN THE MORNING, THEN CLEARING. A SLIGHT
CHANCE OF. BREEZY WITH HIGHS IN THE UPPER 50S.
WYZ019-201000-
GREEN MOUNTAINS AND RATTLESNAKE RANGE-
INCLUDING THE CITY OF JEFFREY CITY
217 AM MDT SUN SEP 20 2026
REST OF TONIGHT
SHOWERS LIKELY WITH A SLIGHT CHANCE OF
THUNDERSTORMS. PATCHY FOG. SOME THUNDERSTORMS MAY PRODUCE HEAVY
RAINFALL. NEAR STEADY TEMPERATURE IN THE MID 40S. NORTHWEST WINDS
AROUND 10 MPH WITH GUSTS UP TO 25 MPH. CHANCE OF RAIN 70 PERCENT.
SUNDAY
MOSTLY CLOUDY IN THE MORNING, THEN BECOMING PARTLY
CLOUDY. AREAS OF FOG IN THE MORNING. A CHANCE OF SHOWERS. A
SLIGHT CHANCE OF THUNDERSTORMS. SOME THUNDERSTORMS MAY PRODUCE
HEAVY RAINFALL IN THE MORNING. HIGHS AROUND 60. WEST WINDS AROUND
10 MPH WITH GUSTS UP TO 30 MPH. CHANCE OF RAIN 50 PERCENT.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 30S. GUSTS UP TO
20 MPH IN THE EVENING.
MONDAY
MOSTLY SUNNY. HIGHS IN THE MID 60S. SOUTHWEST WINDS
AROUND 10 MPH IN THE AFTERNOON.
MONDAY NIGHT
MOSTLY CLEAR. LOWS AROUND 40.
TUESDAY
MOSTLY SUNNY. HIGHS AROUND 70.
TUESDAY NIGHT
A SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING.
PARTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS IN THE MID 40S.
CHANCE OF RAIN 30 PERCENT.
WEDNESDAY
PARTLY CLOUDY IN THE MORNING, THEN CLEARING. HIGHS
IN THE UPPER 60S.
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS IN THE LOWER 40S.
THURSDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 70S.
THURSDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 40S.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 70S.
FRIDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 40S.
SATURDAY
PARTLY CLOUDY IN THE MORNING, THEN CLEARING. HIGHS IN
THE LOWER 70S.
WYZ024-201000-
SALT RIVER AND WYOMING RANGES-
217 AM MDT SUN SEP 20 2026
REST OF TONIGHT
MOSTLY CLEAR. LOWS IN THE MID 30S.
SUNDAY
MOSTLY SUNNY IN THE MORNING, THEN BECOMING PARTLY
CLOUDY. HIGHS IN THE UPPER 50S. NORTHWEST WINDS AROUND 10 MPH
WITH GUSTS UP TO 20 MPH IN THE AFTERNOON.
SUNDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 30S. NORTHWEST
WINDS AROUND 10 MPH WITH GUSTS UP TO 20 MPH IN THE EVENING.
MONDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 60S. SOUTHWEST WINDS
AROUND 10 MPH WITH GUSTS UP TO 20 MPH IN THE AFTERNOON.
MONDAY NIGHT
MOSTLY CLEAR IN THE EVENING, THEN BECOMING PARTLY
CLOUDY. LOWS IN THE UPPER 30S. SOUTH WINDS AROUND 10 MPH IN THE
EVENING.
TUESDAY
PARTLY CLOUDY. A SLIGHT CHANCE OF RAIN SHOWERS AND
THUNDERSTORMS IN THE AFTERNOON. HIGHS IN THE LOWER 60S. CHANCE OF
RAIN 20 PERCENT.
TUESDAY NIGHT
MOSTLY CLOUDY IN THE EVENING, THEN BECOMING
PARTLY CLOUDY. A CHANCE OF SHOWERS WITH A SLIGHT CHANCE OF
THUNDERSTORMS. LOWS AROUND 40. CHANCE OF RAIN 40 PERCENT.
WEDNESDAY
PARTLY CLOUDY IN THE MORNING, THEN CLEARING. HIGHS
IN THE LOWER 60S.
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 30S.
THURSDAY
SUNNY. HIGHS IN THE MID 60S.
THURSDAY NIGHT
MOSTLY CLEAR. LOWS AROUND 40.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE MID 60S.
FRIDAY NIGHT
MOSTLY CLEAR. LOWS IN THE LOWER 40S.
SATURDAY
PARTLY CLOUDY IN THE MORNING, THEN CLEARING. A SLIGHT
CHANCE OF. HIGHS IN THE MID 60S.
WYZ030-201000-
EAST SWEETWATER COUNTY-
INCLUDING THE CITY OF WAMSUTTER
217 AM MDT SUN SEP 20 2026
REST OF TONIGHT
PARTLY CLOUDY WITH A CHANCE OF SHOWERS WITH A
SLIGHT CHANCE OF THUNDERSTORMS. PATCHY FOG. SOME THUNDERSTORMS
MAY PRODUCE HEAVY RAINFALL. LOWS IN THE LOWER 40S. WEST WINDS
AROUND 10 MPH. CHANCE OF RAIN 50 PERCENT.
SUNDAY
PARTLY CLOUDY IN THE MORNING, THEN CLEARING. AREAS OF
FOG IN THE MORNING. HIGHS AROUND 60. WEST WINDS AROUND 10 MPH.
SUNDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 30S.
MONDAY
MOSTLY SUNNY. HIGHS IN THE MID 60S.
MONDAY NIGHT
MOSTLY CLEAR. LOWS AROUND 40.
TUESDAY
PARTLY CLOUDY IN THE MORNING, THEN CLEARING. HIGHS
AROUND 70.
TUESDAY NIGHT
A SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING.
PARTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS IN THE LOWER 40S.
CHANCE OF RAIN 30 PERCENT.
WEDNESDAY
PARTLY CLOUDY IN THE MORNING, THEN CLEARING. HIGHS
IN THE UPPER 60S.
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS IN THE LOWER 40S.
THURSDAY
MOSTLY SUNNY. HIGHS AROUND 70.
THURSDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 40S.
FRIDAY
MOSTLY SUNNY. HIGHS AROUND 70.
FRIDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN CLEARING. LOWS
IN THE MID 40S.
SATURDAY
PARTLY CLOUDY IN THE MORNING, THEN CLEARING. HIGHS
AROUND 70.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page