597  
FPUS55 KRIW 180437  
ZFPRIW  
FPUS55 KRIW 180436  
ZFPRIW  
 
ZONE FORECAST PRODUCT FOR WESTERN AND CENTRAL WYOMING  
NATIONAL WEATHER SERVICE RIVERTON WY  
1036 PM MDT SUN OCT 17 2021  
 
WYZ020-181000-  
NATRONA COUNTY LOWER ELEVATIONS-  
INCLUDING THE CITY OF CASPER  
1036 PM MDT SUN OCT 17 2021  
 
...WINTER STORM WATCH IN EFFECT FROM LATE MONDAY NIGHT THROUGH  
TUESDAY EVENING...  
   
REST OF TONIGHT
 
BREEZY. MOSTLY CLEAR LATE IN THE EVENING THEN  
BECOMING PARTLY CLOUDY. LOWS AROUND 44. SOUTHWEST WINDS 15 TO  
20 MPH.    
MONDAY
 
BREEZY. PARTLY CLOUDY THEN BECOMING MOSTLY SUNNY IN THE  
LATE MORNING AND EARLY AFTERNOON THEN BECOMING PARTLY CLOUDY.  
HIGHS AROUND 63. SOUTHWEST WINDS 15 TO 20 MPH.    
MONDAY NIGHT
 
COLDER, CLOUDY. CHANCE OF RAIN IN THE EVENING,  
THEN SNOW, POSSIBLY MIXED WITH RAIN AFTER MIDNIGHT. SNOW  
ACCUMULATION OF 1 TO 2 INCHES. LOWS 29 TO 33. CHANCE OF  
PRECIPITATION 80 PERCENT.    
TUESDAY
 
BREEZY. MUCH COLDER. RAIN SHOWERS AND SNOW SHOWERS.  
SNOW MAY BE HEAVY AT TIMES IN THE AFTERNOON. SNOW ACCUMULATION OF  
2 TO 6 INCHES. HIGHS AROUND 37. NORTHWEST WINDS 15 TO 20 MPH.  
CHANCE OF PRECIPITATION 90 PERCENT.    
TUESDAY NIGHT
 
CLOUDY. A 50 PERCENT CHANCE OF SNOW SHOWERS IN  
THE EVENING. SNOW ACCUMULATION OF 1 TO 2 INCHES. TOTAL SNOW  
ACCUMULATION 4 TO 10 INCHES. LOWS 23 TO 27. NORTHWEST WINDS  
AROUND 15 MPH.    
WEDNESDAY
 
PARTLY CLOUDY. HIGHS IN THE LOWER TO MID 40S.    
WEDNESDAY NIGHT
 
PARTLY CLOUDY. LOWS IN THE LOWER 30S.    
THURSDAY
 
PARTLY CLOUDY IN THE MORNING THEN CLEARING. HIGHS IN  
THE MID TO UPPER 40S.    
THURSDAY NIGHT
 
MOSTLY CLEAR. LOWS NEAR 30.    
FRIDAY
 
MOSTLY SUNNY. HIGHS AROUND 50.    
FRIDAY NIGHT
 
PARTLY CLOUDY. LOWS IN THE MID 30S.    
SATURDAY
 
BREEZY. PARTLY CLOUDY. HIGHS IN THE MID 50S.    
SATURDAY NIGHT
 
PARTLY CLOUDY. LOWS IN THE MID 30S.    
SUNDAY
 
BREEZY. PARTLY CLOUDY. HIGHS IN THE LOWER TO MID 50S.  
 

 
 
WYZ017-181000-  
WIND RIVER BASIN-  
INCLUDING THE CITIES OF RIVERTON AND SHOSHONI  
1036 PM MDT SUN OCT 17 2021  
   
REST OF TONIGHT
 
PARTLY CLOUDY LATE IN THE EVENING THEN  
CLEARING. LOWS 38 TO 42. SOUTH WINDS AROUND 15 MPH SHIFTING TO  
THE SOUTHWEST AFTER MIDNIGHT.    
MONDAY
 
MOSTLY SUNNY IN THE MORNING THEN BECOMING PARTLY  
CLOUDY. HIGHS 59 TO 64. SOUTH WINDS AROUND 15 MPH IN THE  
AFTERNOON.    
MONDAY NIGHT
 
CLOUDY. CHANCE OF RAIN IN THE EVENING, THEN SNOW,  
POSSIBLY MIXED WITH RAIN AFTER MIDNIGHT. SNOW ACCUMULATION UP TO  
1 INCH. LOWS AROUND 34. CHANCE OF PRECIPITATION 80 PERCENT.    
TUESDAY
 
COLDER. CLOUDY WITH RAIN SHOWERS, POSSIBLY MIXED WITH  
SNOW SHOWERS. SNOW ACCUMULATION UP TO 1 INCH. TOTAL SNOW  
ACCUMULATION UP TO 2 INCHES. HIGHS 38 TO 42. NORTH WINDS AROUND  
15 MPH. CHANCE OF PRECIPITATION 80 PERCENT.    
TUESDAY NIGHT
 
PARTLY CLOUDY. LOWS AROUND 27. NORTHWEST WINDS  
AROUND 15 MPH IN THE EVENING.    
WEDNESDAY
 
PARTLY CLOUDY. HIGHS IN THE MID 40S TO LOWER 50S.    
WEDNESDAY NIGHT
 
PARTLY CLOUDY IN THE EVENING THEN BECOMING  
MOSTLY CLOUDY. LOWS IN THE LOWER 30S.    
THURSDAY
 
PARTLY CLOUDY IN THE MORNING THEN CLEARING. HIGHS IN  
THE LOWER TO MID 50S.    
THURSDAY NIGHT
 
MOSTLY CLEAR IN THE EVENING THEN BECOMING  
PARTLY CLOUDY. LOWS IN THE LOWER 30S.    
FRIDAY
 
PARTLY CLOUDY. HIGHS IN THE MID TO UPPER 50S.    
FRIDAY NIGHT
 
PARTLY CLOUDY. LOWS IN THE MID 30S.    
SATURDAY
 
PARTLY CLOUDY. HIGHS IN THE MID TO UPPER 50S.    
SATURDAY NIGHT
 
PARTLY CLOUDY. LOWS IN THE MID 30S.    
SUNDAY
 
PARTLY CLOUDY WITH A 30 PERCENT CHANCE OF RAIN SHOWERS.  
HIGHS IN THE MID TO UPPER 50S.  
 

 
 
WYZ018-181000-  
LANDER FOOTHILLS-  
INCLUDING THE CITY OF LANDER  
1036 PM MDT SUN OCT 17 2021  
   
REST OF TONIGHT
 
PARTLY CLOUDY LATE IN THE EVENING THEN  
CLEARING. LOWS AROUND 41. SOUTHWEST WINDS AROUND 15 MPH.    
MONDAY
 
MOSTLY SUNNY IN THE MORNING THEN BECOMING PARTLY  
CLOUDY. HIGHS 56 TO 60. SOUTH WINDS AROUND 15 MPH IN THE  
AFTERNOON.    
MONDAY NIGHT
 
MOSTLY CLOUDY. CHANCE OF RAIN IN THE EVENING,  
THEN RAIN AND SNOW LIKELY AFTER MIDNIGHT. SNOW ACCUMULATION UP TO  
1 INCH. LOWS AROUND 34. CHANCE OF PRECIPITATION 70 PERCENT.    
TUESDAY
 
COLDER, CLOUDY. RAIN SHOWERS AND SNOW SHOWERS IN THE  
MORNING, THEN CHANCE OF RAIN SHOWERS, POSSIBLY MIXED WITH SNOW  
SHOWERS IN THE AFTERNOON. SNOW ACCUMULATION UP TO 1 INCH. TOTAL  
SNOW ACCUMULATION UP TO 2 INCHES. HIGHS AROUND 39. CHANCE OF  
PRECIPITATION 80 PERCENT.    
TUESDAY NIGHT
 
MOSTLY CLOUDY IN THE EVENING THEN BECOMING  
PARTLY CLOUDY. LOWS AROUND 27.    
WEDNESDAY
 
PARTLY CLOUDY. HIGHS IN THE UPPER 40S.    
WEDNESDAY NIGHT
 
PARTLY CLOUDY IN THE EVENING THEN BECOMING  
MOSTLY CLOUDY. LOWS IN THE LOWER TO MID 30S.    
THURSDAY
 
PARTLY CLOUDY IN THE MORNING THEN CLEARING. HIGHS IN  
THE MID 50S.    
THURSDAY NIGHT
 
MOSTLY CLEAR IN THE EVENING THEN BECOMING  
PARTLY CLOUDY. LOWS IN THE LOWER TO MID 30S.    
FRIDAY
 
MOSTLY SUNNY IN THE MORNING THEN BECOMING PARTLY  
CLOUDY. HIGHS IN THE MID 50S.    
FRIDAY NIGHT
 
PARTLY CLOUDY. LOWS IN THE MID 30S.    
SATURDAY
 
PARTLY CLOUDY. HIGHS IN THE MID 50S.    
SATURDAY NIGHT
 
MOSTLY CLOUDY IN THE EVENING, THEN PARTLY  
CLOUDY WITH A 20 PERCENT CHANCE OF RAIN SHOWERS AFTER MIDNIGHT.  
LOWS IN THE MID 30S.    
SUNDAY
 
PARTLY CLOUDY WITH A 30 PERCENT CHANCE OF RAIN SHOWERS.  
HIGHS IN THE 50S.  
 

 
 
WYZ028-181000-  
ROCK SPRINGS AND GREEN RIVER-  
INCLUDING THE CITIES OF ROCK SPRINGS AND GREEN RIVER  
1036 PM MDT SUN OCT 17 2021  
   
REST OF TONIGHT
 
MOSTLY CLEAR IN THE LATE EVENING AND EARLY  
MORNING THEN BECOMING PARTLY CLOUDY. LOWS AROUND 37. SOUTH WINDS  
AROUND 15 MPH AFTER MIDNIGHT.    
MONDAY
 
BREEZY. PARTLY CLOUDY UNTIL LATE AFTERNOON, THEN MOSTLY  
CLOUDY WITH A 30 PERCENT CHANCE OF RAIN LATE IN THE AFTERNOON.  
HIGHS 53 TO 57. SOUTH WINDS 15 TO 25 MPH IN THE LATE MORNING AND  
AFTERNOON.    
MONDAY NIGHT
 
BREEZY. RAIN LIKELY UNTIL EARLY MORNING. SNOW IN  
THE LATE EVENING AND OVERNIGHT. SNOW ACCUMULATION OF 1 TO  
2 INCHES. LOWS AROUND 31. WEST WINDS 15 TO 20 MPH IN THE EVENING  
BECOMING WEST AROUND 15 MPH EARLY IN THE MORNING. CHANCE OF  
PRECIPITATION 80 PERCENT.    
TUESDAY
 
MOSTLY CLOUDY. SNOW SHOWERS LIKELY, POSSIBLY MIXED  
WITH RAIN SHOWERS IN THE MORNING, THEN CHANCE OF RAIN SHOWERS,  
POSSIBLY MIXED WITH SNOW SHOWERS IN THE AFTERNOON. SNOW  
ACCUMULATION UP TO 1 INCH. TOTAL SNOW ACCUMULATION 1 TO 3 INCHES.  
HIGHS 42 TO 46. WEST WINDS AROUND 15 MPH. CHANCE OF PRECIPITATION  
60 PERCENT.    
TUESDAY NIGHT
 
PARTLY CLOUDY. LOWS AROUND 22. SOUTHWEST WINDS  
AROUND 15 MPH IN THE EVENING.    
WEDNESDAY
 
MOSTLY CLOUDY IN THE MORNING THEN BECOMING PARTLY  
CLOUDY. HIGHS IN THE MID 40S.    
WEDNESDAY NIGHT
 
PARTLY CLOUDY IN THE EVENING THEN BECOMING  
MOSTLY CLOUDY. LOWS IN THE 20S.    
THURSDAY
 
NOT AS COOL. PARTLY CLOUDY IN THE MORNING THEN  
CLEARING. HIGHS IN THE LOWER TO MID 50S.    
THURSDAY NIGHT
 
MOSTLY CLEAR. LOWS IN THE MID TO UPPER 20S.    
FRIDAY
 
PARTLY CLOUDY. HIGHS IN THE 50S.    
FRIDAY NIGHT
 
PARTLY CLOUDY. LOWS NEAR 30.    
SATURDAY
 
MOSTLY CLOUDY. HIGHS IN THE LOWER TO MID 50S.    
SATURDAY NIGHT
 
MOSTLY CLOUDY. SLIGHT CHANCE OF RAIN SHOWERS  
AND SNOW SHOWERS AFTER MIDNIGHT. LOWS NEAR 30. CHANCE OF  
PRECIPITATION 20 PERCENT.    
SUNDAY
 
MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS, POSSIBLY MIXED  
WITH SNOW SHOWERS IN THE MORNING, THEN CHANCE OF RAIN SHOWERS IN  
THE AFTERNOON. HIGHS NEAR 50. CHANCE OF PRECIPITATION 30 PERCENT.  
 

 
 
WYZ013-181000-  
JACKSON HOLE-  
INCLUDING THE CITY OF JACKSON  
1036 PM MDT SUN OCT 17 2021  
   
REST OF TONIGHT
 
MOSTLY CLEAR IN THE LATE EVENING AND EARLY  
MORNING THEN BECOMING PARTLY CLOUDY. LOWS AROUND 33.    
MONDAY
 
PARTLY CLOUDY IN THE MORNING THEN BECOMING MOSTLY  
CLOUDY. CHANCE OF SNOW IN THE MORNING. CHANCE OF RAIN IN THE LATE  
MORNING AND EARLY AFTERNOON, THEN RAIN LIKELY LATE IN THE  
AFTERNOON. LITTLE OR NO SNOW ACCUMULATION. HIGHS AROUND 49.  
CHANCE OF PRECIPITATION 60 PERCENT.    
MONDAY NIGHT
 
CLOUDY. RAIN AND SLIGHT CHANCE OF THUNDERSTORMS  
IN THE EVENING. CHANCE OF SNOW THROUGH THE NIGHT. CHANCE OF RAIN  
AFTER MIDNIGHT. SNOW ACCUMULATION UP TO 1 INCH. LOWS AROUND 28.  
CHANCE OF PRECIPITATION 80 PERCENT.    
TUESDAY
 
MOSTLY CLOUDY. A 30 PERCENT CHANCE OF SNOW SHOWERS,  
POSSIBLY MIXED WITH RAIN SHOWERS IN THE MORNING. HIGHS AROUND 42.   
TUESDAY NIGHT
 
PARTLY CLOUDY. LOWS 22 TO 27.    
WEDNESDAY
 
NOT AS COOL. PARTLY CLOUDY. HIGHS 48 TO 53.    
WEDNESDAY NIGHT
 
PARTLY CLOUDY. LOWS 23 TO 28.    
THURSDAY
 
PARTLY CLOUDY. HIGHS IN THE LOWER TO MID 50S.    
THURSDAY NIGHT
 
MOSTLY CLEAR. LOWS 23 TO 28.    
FRIDAY
 
MOSTLY SUNNY IN THE MORNING THEN BECOMING PARTLY  
CLOUDY. HIGHS IN THE LOWER TO MID 50S.    
FRIDAY NIGHT
 
PARTLY CLOUDY WITH CHANCE OF RAIN SHOWERS IN THE  
EVENING, THEN MOSTLY CLOUDY WITH CHANCE OF RAIN SHOWERS, POSSIBLY  
MIXED WITH SNOW SHOWERS AFTER MIDNIGHT. LOWS 27 TO 32. CHANCE OF  
PRECIPITATION 40 PERCENT.    
SATURDAY
 
MOSTLY CLOUDY WITH A 40 PERCENT CHANCE OF RAIN  
SHOWERS AND SNOW SHOWERS. HIGHS IN THE MID TO UPPER 40S.    
SATURDAY NIGHT
 
MOSTLY CLOUDY WITH A 40 PERCENT CHANCE OF RAIN  
SHOWERS AND SNOW SHOWERS. LOWS 26 TO 31.    
SUNDAY
 
CLOUDY. CHANCE OF RAIN SHOWERS AND SNOW SHOWERS IN THE  
MORNING, THEN RAIN SHOWERS LIKELY IN THE AFTERNOON. HIGHS 43 TO  
48. CHANCE OF PRECIPITATION 60 PERCENT.  
 

 
 
WYZ003-181000-  
CODY FOOTHILLS-  
INCLUDING THE CITIES OF CLARK, CODY, AND MEETEETSE  
1036 PM MDT SUN OCT 17 2021  
   
REST OF TONIGHT
 
MOSTLY CLEAR. LOWS 43 TO 47.    
MONDAY
 
PARTLY CLOUDY UNTIL LATE AFTERNOON THEN BECOMING MOSTLY  
CLOUDY. HIGHS 57 TO 62.    
MONDAY NIGHT
 
BREEZY, COLDER, CLOUDY. CHANCE OF RAIN AND SLIGHT  
CHANCE OF THUNDERSTORMS THROUGH THE NIGHT. CHANCE OF SNOW AFTER  
MIDNIGHT. LOWS 34 TO 39. NORTH WINDS 15 TO 25 MPH IN THE LATE  
EVENING AND OVERNIGHT. CHANCE OF PRECIPITATION 40 PERCENT.    
TUESDAY
 
BREEZY, COLDER. MOSTLY CLOUDY. SNOW SHOWERS LIKELY,  
POSSIBLY MIXED WITH RAIN SHOWERS IN THE MORNING, THEN CHANCE OF  
RAIN SHOWERS AND SNOW SHOWERS IN THE AFTERNOON. SNOW ACCUMULATION  
UP TO 2 INCHES. HIGHS 38 TO 42. NORTH WINDS 15 TO 20 MPH. CHANCE  
OF PRECIPITATION 60 PERCENT.    
TUESDAY NIGHT
 
PARTLY CLOUDY. LOWS 28 TO 33. NORTHWEST WINDS  
AROUND 15 MPH IN THE EVENING.    
WEDNESDAY
 
NOT AS COOL. PARTLY CLOUDY. HIGHS NEAR 50.    
WEDNESDAY NIGHT
 
PARTLY CLOUDY. LOWS 34 TO 39.    
THURSDAY
 
PARTLY CLOUDY. HIGHS 54 TO 59.    
THURSDAY NIGHT
 
MOSTLY CLEAR IN THE EVENING THEN BECOMING  
PARTLY CLOUDY. LOWS 35 TO 40.    
FRIDAY
 
PARTLY CLOUDY. HIGHS IN THE MID TO UPPER 50S.    
FRIDAY NIGHT
 
PARTLY CLOUDY WITH A 20 PERCENT CHANCE OF RAIN  
SHOWERS. LOWS NEAR 40.    
SATURDAY
 
PARTLY CLOUDY. SLIGHT CHANCE OF RAIN SHOWERS,  
POSSIBLY MIXED WITH SNOW SHOWERS IN THE MORNING, THEN SLIGHT  
CHANCE OF RAIN SHOWERS IN THE AFTERNOON. HIGHS 53 TO 58. CHANCE  
OF PRECIPITATION 20 PERCENT.    
SATURDAY NIGHT
 
PARTLY CLOUDY WITH A 20 PERCENT CHANCE OF RAIN  
SHOWERS AND SNOW SHOWERS. LOWS 34 TO 39.    
SUNDAY
 
MOSTLY CLOUDY WITH CHANCE OF RAIN SHOWERS, POSSIBLY  
MIXED WITH SNOW SHOWERS IN THE MORNING, THEN PARTLY CLOUDY WITH  
CHANCE OF RAIN SHOWERS IN THE AFTERNOON. HIGHS 52 TO 57. CHANCE  
OF PRECIPITATION 30 PERCENT.  
 

 
 
WYZ004-181000-  
NORTH BIG HORN BASIN-  
INCLUDING THE CITIES OF BASIN, GREYBULL, LOVELL, POWELL,  
AND SHELL  
1036 PM MDT SUN OCT 17 2021  
   
REST OF TONIGHT
 
MOSTLY CLEAR. LOWS 40 TO 44.    
MONDAY
 
PARTLY CLOUDY UNTIL LATE AFTERNOON THEN BECOMING MOSTLY  
CLOUDY. HIGHS 62 TO 66.    
MONDAY NIGHT
 
BREEZY. MOSTLY CLOUDY. SLIGHT CHANCE OF RAIN  
EARLY IN THE EVENING, THEN CHANCE OF RAIN AND SNOW IN THE LATE  
EVENING AND OVERNIGHT. LOWS AROUND 36. NORTH WINDS 15 TO 25 MPH  
IN THE LATE EVENING AND OVERNIGHT. CHANCE OF PRECIPITATION  
40 PERCENT.    
TUESDAY
 
BREEZY, COOLER. MOSTLY CLOUDY. RAIN SHOWERS LIKELY,  
POSSIBLY MIXED WITH SNOW SHOWERS IN THE MORNING, THEN CHANCE OF  
RAIN SHOWERS IN THE AFTERNOON. NO SNOW ACCUMULATION. HIGHS 41 TO  
45. NORTH WINDS 15 TO 25 MPH. CHANCE OF PRECIPITATION 60 PERCENT.   
TUESDAY NIGHT
 
BREEZY. PARTLY CLOUDY. LOWS AROUND 29. NORTHWEST  
WINDS 15 TO 20 MPH IN THE EVENING.    
WEDNESDAY
 
PARTLY CLOUDY. HIGHS IN THE LOWER 50S.    
WEDNESDAY NIGHT
 
PARTLY CLOUDY IN THE EVENING THEN BECOMING  
MOSTLY CLOUDY. LOWS IN THE LOWER TO MID 30S.    
THURSDAY
 
PARTLY CLOUDY IN THE MORNING THEN CLEARING. HIGHS IN  
THE UPPER 50S.    
THURSDAY NIGHT
 
MOSTLY CLEAR IN THE EVENING THEN BECOMING  
PARTLY CLOUDY. LOWS IN THE 30S.    
FRIDAY
 
PARTLY CLOUDY. HIGHS IN THE UPPER 50S.    
FRIDAY NIGHT
 
PARTLY CLOUDY. LOWS IN THE MID TO UPPER 30S.    
SATURDAY
 
PARTLY CLOUDY. HIGHS IN THE UPPER 50S.    
SATURDAY NIGHT
 
PARTLY CLOUDY. LOWS IN THE 30S.    
SUNDAY
 
MOSTLY CLOUDY IN THE MORNING THEN BECOMING PARTLY  
CLOUDY. A 20 PERCENT CHANCE OF RAIN SHOWERS. HIGHS NEAR 60.  
 

 
 
WYZ006-181000-  
SOUTHEAST BIG HORN BASIN-  
INCLUDING THE CITIES OF TEN SLEEP AND WORLAND  
1036 PM MDT SUN OCT 17 2021  
   
REST OF TONIGHT
 
MOSTLY CLEAR IN THE LATE EVENING AND EARLY  
MORNING THEN BECOMING PARTLY CLOUDY. LOWS 39 TO 43.    
MONDAY
 
PARTLY CLOUDY THEN BECOMING MOSTLY SUNNY IN THE LATE  
MORNING AND EARLY AFTERNOON THEN BECOMING PARTLY CLOUDY. HIGHS  
AROUND 65.    
MONDAY NIGHT
 
BREEZY. MOSTLY CLOUDY. CHANCE OF RAIN UNTIL EARLY  
MORNING. CHANCE OF SNOW IN THE LATE EVENING AND EARLY MORNING,  
THEN SNOW, POSSIBLY MIXED WITH RAIN EARLY IN THE MORNING. LITTLE  
OR NO SNOW ACCUMULATION. LOWS AROUND 34. SOUTH WINDS AROUND  
15 MPH AFTER MIDNIGHT SHIFTING TO THE WEST. CHANCE OF  
PRECIPITATION 60 PERCENT.    
TUESDAY
 
BREEZY. MUCH COLDER. CLOUDY. RAIN SHOWERS, POSSIBLY  
MIXED WITH SNOW SHOWERS IN THE MORNING, THEN RAIN SHOWERS LIKELY  
IN THE AFTERNOON. NO SNOW ACCUMULATION. HIGHS 40 TO 44. NORTHWEST  
WINDS 15 TO 20 MPH. CHANCE OF PRECIPITATION 80 PERCENT.    
TUESDAY NIGHT
 
MOSTLY CLOUDY WITH A 30 PERCENT CHANCE OF RAIN  
SHOWERS AND SNOW SHOWERS IN THE EVENING, THEN PARTLY CLOUDY AFTER  
MIDNIGHT. LOWS 26 TO 30. NORTHWEST WINDS AROUND 15 MPH IN THE  
EVENING.    
WEDNESDAY
 
PARTLY CLOUDY. HIGHS NEAR 50.    
WEDNESDAY NIGHT
 
PARTLY CLOUDY. LOWS NEAR 30.    
THURSDAY
 
PARTLY CLOUDY IN THE MORNING THEN CLEARING. HIGHS IN  
THE MID TO UPPER 50S.    
THURSDAY NIGHT
 
MOSTLY CLEAR IN THE EVENING THEN BECOMING  
PARTLY CLOUDY. LOWS IN THE LOWER TO MID 30S.    
FRIDAY
 
PARTLY CLOUDY. HIGHS NEAR 60.    
FRIDAY NIGHT
 
PARTLY CLOUDY. LOWS IN THE MID TO UPPER 30S.    
SATURDAY
 
PARTLY CLOUDY. HIGHS IN THE UPPER 50S.    
SATURDAY NIGHT
 
MOSTLY CLOUDY IN THE EVENING THEN BECOMING  
PARTLY CLOUDY. LOWS IN THE LOWER TO MID 30S.    
SUNDAY
 
PARTLY CLOUDY. HIGHS NEAR 60.  
 

 
 
WYZ005-181000-  
SOUTHWEST BIG HORN BASIN-  
INCLUDING THE CITY OF THERMOPOLIS  
1036 PM MDT SUN OCT 17 2021  
   
REST OF TONIGHT
 
MOSTLY CLEAR LATE IN THE EVENING THEN BECOMING  
PARTLY CLOUDY. LOWS 40 TO 44. SOUTHWEST WINDS AROUND 15 MPH AFTER  
MIDNIGHT.    
MONDAY
 
PARTLY CLOUDY THEN BECOMING MOSTLY SUNNY LATE IN THE  
MORNING THEN BECOMING PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY  
LATE IN THE AFTERNOON. HIGHS 61 TO 65.    
MONDAY NIGHT
 
BREEZY, CLOUDY. CHANCE OF RAIN IN THE EVENING,  
THEN RAIN AND SNOW LIKELY AFTER MIDNIGHT. LITTLE OR NO SNOW  
ACCUMULATION. LOWS 33 TO 37. NORTHWEST WINDS 15 TO 20 MPH AFTER  
MIDNIGHT. CHANCE OF PRECIPITATION 60 PERCENT.    
TUESDAY
 
BREEZY, COLDER, CLOUDY. RAIN SHOWERS, POSSIBLY MIXED  
WITH SNOW SHOWERS IN THE MORNING, THEN CHANCE OF RAIN SHOWERS,  
POSSIBLY MIXED WITH SNOW SHOWERS IN THE AFTERNOON. LITTLE OR NO  
SNOW ACCUMULATION. HIGHS 39 TO 43. NORTHWEST WINDS 15 TO 20 MPH.  
CHANCE OF PRECIPITATION 80 PERCENT.    
TUESDAY NIGHT
 
PARTLY CLOUDY. LOWS AROUND 29. NORTHWEST WINDS  
AROUND 15 MPH IN THE EVENING.    
WEDNESDAY
 
PARTLY CLOUDY. HIGHS NEAR 50.    
WEDNESDAY NIGHT
 
PARTLY CLOUDY IN THE EVENING THEN BECOMING  
MOSTLY CLOUDY. LOWS IN THE LOWER TO MID 30S.    
THURSDAY
 
PARTLY CLOUDY IN THE MORNING THEN CLEARING. HIGHS IN  
THE 50S.    
THURSDAY NIGHT
 
MOSTLY CLEAR IN THE EVENING THEN BECOMING  
PARTLY CLOUDY. LOWS IN THE LOWER TO MID 30S.    
FRIDAY
 
PARTLY CLOUDY. HIGHS IN THE MID TO UPPER 50S.    
FRIDAY NIGHT
 
PARTLY CLOUDY. LOWS IN THE MID TO UPPER 30S.    
SATURDAY
 
PARTLY CLOUDY. HIGHS IN THE UPPER 50S.    
SATURDAY NIGHT
 
MOSTLY CLOUDY IN THE EVENING THEN BECOMING  
PARTLY CLOUDY. LOWS IN THE 30S.    
SUNDAY
 
MOSTLY CLOUDY IN THE MORNING THEN BECOMING PARTLY  
CLOUDY. A 30 PERCENT CHANCE OF RAIN SHOWERS. HIGHS IN THE MID 50S  
TO LOWER 60S.  
 

 
 
WYZ023-181000-  
STAR VALLEY-  
INCLUDING THE CITIES OF AFTON, ALPINE, STAR VALLEY RANCH,  
AND THAYNE  
1036 PM MDT SUN OCT 17 2021  
   
REST OF TONIGHT
 
PARTLY CLOUDY IN THE LATE EVENING AND EARLY  
MORNING THEN BECOMING MOSTLY CLOUDY. LOWS AROUND 36.    
MONDAY
 
PARTLY CLOUDY IN THE MORNING THEN BECOMING CLOUDY.  
SLIGHT CHANCE OF SNOW IN THE MORNING. CHANCE OF RAIN UNTIL LATE  
AFTERNOON, THEN RAIN LATE IN THE AFTERNOON. NO SNOW ACCUMULATION.  
HIGHS AROUND 50. SOUTH WINDS AROUND 15 MPH EARLY IN THE  
AFTERNOON. CHANCE OF PRECIPITATION 80 PERCENT.    
MONDAY NIGHT
 
RAIN UNTIL EARLY MORNING. SNOW IN THE LATE  
EVENING AND OVERNIGHT. SNOW ACCUMULATION OF 1 TO 2 INCHES. LOWS  
AROUND 30. CHANCE OF PRECIPITATION 90 PERCENT.    
TUESDAY
 
COLDER, CLOUDY. A 40 PERCENT CHANCE OF SNOW SHOWERS,  
POSSIBLY MIXED WITH RAIN SHOWERS IN THE MORNING. HIGHS AROUND 39.   
TUESDAY NIGHT
 
PARTLY CLOUDY. LOWS 21 TO 26.    
WEDNESDAY
 
NOT AS COOL. MOSTLY CLOUDY IN THE MORNING THEN  
BECOMING PARTLY CLOUDY. HIGHS NEAR 50.    
WEDNESDAY NIGHT
 
MOSTLY CLOUDY IN THE EVENING THEN BECOMING  
PARTLY CLOUDY. LOWS IN THE MID TO UPPER 20S.    
THURSDAY
 
PARTLY CLOUDY IN THE MORNING THEN CLEARING. HIGHS IN  
THE MID 50S.    
THURSDAY NIGHT
 
MOSTLY CLEAR. LOWS 25 TO 30.    
FRIDAY
 
PARTLY CLOUDY. HIGHS IN THE MID 50S.    
FRIDAY NIGHT
 
PARTLY CLOUDY IN THE EVENING THEN BECOMING MOSTLY  
CLOUDY. A 40 PERCENT CHANCE OF RAIN SHOWERS. LOWS NEAR 30.    
SATURDAY
 
MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS, POSSIBLY MIXED  
WITH SNOW SHOWERS IN THE MORNING, THEN CHANCE OF RAIN SHOWERS IN  
THE AFTERNOON. HIGHS NEAR 50. CHANCE OF PRECIPITATION 40 PERCENT.   
SATURDAY NIGHT
 
MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS IN THE  
EVENING, THEN CHANCE OF RAIN SHOWERS, POSSIBLY MIXED WITH SNOW  
SHOWERS AFTER MIDNIGHT. LOWS NEAR 30. CHANCE OF PRECIPITATION  
40 PERCENT.    
SUNDAY
 
CLOUDY. CHANCE OF RAIN SHOWERS, POSSIBLY MIXED WITH  
SNOW SHOWERS IN THE MORNING, THEN RAIN SHOWERS LIKELY IN THE  
AFTERNOON. HIGHS IN THE MID TO UPPER 40S. CHANCE OF PRECIPITATION  
60 PERCENT.  
 

 
 
WYZ025-181000-  
UPPER GREEN RIVER BASIN FOOTHILLS-  
INCLUDING THE CITY OF PINEDALE  
1036 PM MDT SUN OCT 17 2021  
   
REST OF TONIGHT
 
PARTLY CLOUDY IN THE LATE EVENING AND EARLY  
MORNING THEN BECOMING MOSTLY CLOUDY. LOWS 30 TO 34.    
MONDAY
 
MOSTLY CLOUDY. CHANCE OF SNOW IN THE MORNING. CHANCE OF  
RAIN IN THE LATE MORNING AND AFTERNOON. HIGHS 48 TO 52. SOUTH  
WINDS AROUND 15 MPH IN THE AFTERNOON. CHANCE OF PRECIPITATION  
30 PERCENT.    
MONDAY NIGHT
 
CLOUDY. SLIGHT CHANCE OF THUNDERSTORMS EARLY IN  
THE EVENING. CHANCE OF RAIN IN THE EVENING. CHANCE OF SNOW IN THE  
LATE EVENING AND OVERNIGHT. SNOW ACCUMULATION AROUND 1 INCH. LOWS  
AROUND 27. CHANCE OF PRECIPITATION 50 PERCENT.    
TUESDAY
 
COLDER. MOSTLY CLOUDY. SNOW SHOWERS LIKELY, POSSIBLY  
MIXED WITH RAIN SHOWERS IN THE MORNING, THEN CHANCE OF RAIN  
SHOWERS AND SNOW SHOWERS IN THE AFTERNOON. LITTLE OR NO SNOW  
ACCUMULATION. HIGHS AROUND 40. NORTHWEST WINDS AROUND 15 MPH IN  
THE AFTERNOON. CHANCE OF PRECIPITATION 60 PERCENT.    
TUESDAY NIGHT
 
PARTLY CLOUDY IN THE EVENING THEN BECOMING  
MOSTLY CLOUDY. LOWS 20 TO 24.    
WEDNESDAY
 
MOSTLY CLOUDY IN THE MORNING THEN BECOMING PARTLY  
CLOUDY. HIGHS IN THE MID TO UPPER 40S.    
WEDNESDAY NIGHT
 
PARTLY CLOUDY. LOWS 19 TO 23.    
THURSDAY
 
PARTLY CLOUDY IN THE MORNING THEN CLEARING. HIGHS  
AROUND 50.    
THURSDAY NIGHT
 
MOSTLY CLEAR IN THE EVENING THEN BECOMING  
PARTLY CLOUDY. LOWS IN THE LOWER TO MID 20S.    
FRIDAY
 
MOSTLY SUNNY IN THE MORNING THEN BECOMING PARTLY  
CLOUDY. HIGHS IN THE LOWER 50S.    
FRIDAY NIGHT
 
PARTLY CLOUDY WITH CHANCE OF RAIN SHOWERS IN THE  
EVENING, THEN MOSTLY CLOUDY WITH CHANCE OF RAIN SHOWERS AND SNOW  
SHOWERS AFTER MIDNIGHT. LOWS IN THE MID TO UPPER 20S. CHANCE OF  
PRECIPITATION 30 PERCENT.    
SATURDAY
 
MOSTLY CLOUDY WITH A 30 PERCENT CHANCE OF SNOW  
SHOWERS, POSSIBLY MIXED WITH RAIN SHOWERS. HIGHS IN THE MID TO  
UPPER 40S.    
SATURDAY NIGHT
 
MOSTLY CLOUDY WITH A 30 PERCENT CHANCE OF RAIN  
SHOWERS AND SNOW SHOWERS. LOWS IN THE LOWER TO MID 20S.    
SUNDAY
 
CLOUDY WITH A 50 PERCENT CHANCE OF SNOW SHOWERS,  
POSSIBLY MIXED WITH RAIN SHOWERS. HIGHS IN THE 40S.  
 

 
 
WYZ026-181000-  
UPPER GREEN RIVER BASIN-  
INCLUDING THE CITIES OF LA BARGE, BIG PINEY, AND FARSON  
1036 PM MDT SUN OCT 17 2021  
   
REST OF TONIGHT
 
PARTLY CLOUDY. LOWS 31 TO 35.    
MONDAY
 
PARTLY CLOUDY UNTIL LATE AFTERNOON, THEN MOSTLY CLOUDY  
WITH CHANCE OF RAIN LATE IN THE AFTERNOON. HIGHS 51 TO 55. SOUTH  
WINDS AROUND 15 MPH IN THE AFTERNOON. CHANCE OF RAIN 30 PERCENT.    
MONDAY NIGHT
 
CLOUDY. CHANCE OF RAIN EARLY IN THE EVENING, THEN  
RAIN LIKELY, POSSIBLY MIXED WITH SNOW LATE IN THE EVENING. SNOW  
LIKELY AFTER MIDNIGHT. SNOW ACCUMULATION AROUND 1 INCH. LOWS  
AROUND 27. SOUTHWEST WINDS AROUND 15 MPH IN THE EVENING. CHANCE  
OF PRECIPITATION 60 PERCENT.    
TUESDAY
 
MOSTLY CLOUDY. SNOW SHOWERS LIKELY, POSSIBLY MIXED  
WITH RAIN SHOWERS IN THE MORNING, THEN CHANCE OF RAIN SHOWERS,  
POSSIBLY MIXED WITH SNOW SHOWERS IN THE AFTERNOON. SNOW  
ACCUMULATION UP TO 1 INCH. TOTAL SNOW ACCUMULATION 1 TO 2 INCHES.  
HIGHS 41 TO 45. WEST WINDS AROUND 15 MPH. CHANCE OF PRECIPITATION  
60 PERCENT.    
TUESDAY NIGHT
 
PARTLY CLOUDY IN THE EVENING THEN BECOMING  
MOSTLY CLOUDY. LOWS AROUND 23. SOUTH WINDS AROUND 15 MPH IN THE  
EVENING.    
WEDNESDAY
 
MOSTLY CLOUDY IN THE MORNING THEN BECOMING PARTLY  
CLOUDY. HIGHS IN THE MID 40S.    
WEDNESDAY NIGHT
 
PARTLY CLOUDY IN THE EVENING THEN BECOMING  
MOSTLY CLOUDY. LOWS IN THE LOWER TO MID 20S.    
THURSDAY
 
PARTLY CLOUDY IN THE MORNING THEN CLEARING. HIGHS IN  
THE LOWER TO MID 50S.    
THURSDAY NIGHT
 
MOSTLY CLEAR. LOWS IN THE LOWER TO MID 20S.    
FRIDAY
 
MOSTLY SUNNY IN THE MORNING THEN BECOMING PARTLY  
CLOUDY. HIGHS IN THE LOWER 50S.    
FRIDAY NIGHT
 
PARTLY CLOUDY IN THE EVENING, THEN MOSTLY CLOUDY  
WITH SLIGHT CHANCE OF RAIN SHOWERS AND SNOW SHOWERS AFTER  
MIDNIGHT. LOWS IN THE MID TO UPPER 20S. CHANCE OF PRECIPITATION  
20 PERCENT.    
SATURDAY
 
MOSTLY CLOUDY. SLIGHT CHANCE OF RAIN SHOWERS AND SNOW  
SHOWERS IN THE MORNING, THEN SLIGHT CHANCE OF RAIN SHOWERS IN THE  
AFTERNOON. HIGHS IN THE LOWER 50S. CHANCE OF PRECIPITATION  
20 PERCENT.    
SATURDAY NIGHT
 
MOSTLY CLOUDY WITH A 30 PERCENT CHANCE OF RAIN  
SHOWERS AND SNOW SHOWERS. LOWS IN THE 20S.    
SUNDAY
 
MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS AND SNOW SHOWERS  
IN THE MORNING, THEN CHANCE OF RAIN SHOWERS IN THE AFTERNOON.  
HIGHS IN THE MID TO UPPER 40S. CHANCE OF PRECIPITATION  
40 PERCENT.  
 

 
 
WYZ010-181000-  
NORTHEAST JOHNSON COUNTY-  
INCLUDING THE CITY OF BUFFALO  
1036 PM MDT SUN OCT 17 2021  
   
REST OF TONIGHT
 
MOSTLY CLEAR LATE IN THE EVENING THEN BECOMING  
PARTLY CLOUDY. LOWS 42 TO 47. SOUTHWEST WINDS AROUND 15 MPH.    
MONDAY
 
PARTLY CLOUDY EARLY IN THE MORNING THEN CLEARING. HIGHS  
66 TO 70.    
MONDAY NIGHT
 
BREEZY. MOSTLY CLOUDY. CHANCE OF RAIN IN THE LATE  
EVENING AND EARLY MORNING. CHANCE OF SNOW AFTER MIDNIGHT. RAIN  
LIKELY EARLY IN THE MORNING. NO SNOW ACCUMULATION. LOWS AROUND  
37. NORTHWEST WINDS 15 TO 20 MPH AFTER MIDNIGHT. CHANCE OF  
PRECIPITATION 60 PERCENT.    
TUESDAY
 
BREEZY. MUCH COLDER. RAIN SHOWERS, POSSIBLY MIXED WITH  
SNOW SHOWERS. LITTLE OR NO SNOW ACCUMULATION. HIGHS 38 TO 42.  
NORTH WINDS 15 TO 25 MPH. CHANCE OF PRECIPITATION 80 PERCENT.    
TUESDAY NIGHT
 
BREEZY, COLDER, CLOUDY. A 40 PERCENT CHANCE OF  
RAIN SHOWERS AND SNOW SHOWERS IN THE EVENING. LOWS 26 TO 30.  
NORTHWEST WINDS 15 TO 25 MPH.    
WEDNESDAY
 
PARTLY CLOUDY IN THE MORNING THEN CLEARING. HIGHS IN  
THE UPPER 40S.    
WEDNESDAY NIGHT
 
PARTLY CLOUDY. LOWS 29 TO 34.    
THURSDAY
 
PARTLY CLOUDY IN THE MORNING THEN CLEARING. HIGHS IN  
THE UPPER 50S.    
THURSDAY NIGHT
 
MOSTLY CLEAR IN THE EVENING THEN BECOMING  
PARTLY CLOUDY. LOWS IN THE LOWER TO MID 30S.    
FRIDAY
 
PARTLY CLOUDY IN THE MORNING THEN CLEARING. HIGHS  
AROUND 60.    
FRIDAY NIGHT
 
PARTLY CLOUDY. LOWS IN THE MID 30S TO LOWER 40S.    
SATURDAY
 
PARTLY CLOUDY. HIGHS IN THE UPPER 50S.    
SATURDAY NIGHT
 
PARTLY CLOUDY. LOWS IN THE 30S.    
SUNDAY
 
PARTLY CLOUDY. HIGHS AROUND 60.  
 

 
 
WYZ011-181000-  
SOUTHEAST JOHNSON COUNTY-  
INCLUDING THE CITY OF KAYCEE  
1036 PM MDT SUN OCT 17 2021  
   
REST OF TONIGHT
 
BREEZY. MOSTLY CLEAR LATE IN THE EVENING THEN  
BECOMING PARTLY CLOUDY. LOWS AROUND 46. SOUTH WINDS AROUND 15 MPH  
SHIFTING TO THE SOUTHWEST AFTER MIDNIGHT.    
MONDAY
 
PARTLY CLOUDY THEN BECOMING MOSTLY SUNNY IN THE LATE  
MORNING AND EARLY AFTERNOON THEN BECOMING PARTLY CLOUDY. HIGHS  
65 TO 69. SOUTHWEST WINDS AROUND 15 MPH.    
MONDAY NIGHT
 
COLDER. MOSTLY CLOUDY. CHANCE OF RAIN IN THE  
EVENING, THEN RAIN, POSSIBLY MIXED WITH SNOW AFTER MIDNIGHT.  
LITTLE OR NO SNOW ACCUMULATION. LOWS 34 TO 38. NORTH WINDS AROUND  
15 MPH EARLY IN THE MORNING. CHANCE OF PRECIPITATION 80 PERCENT.    
TUESDAY
 
BREEZY. MUCH COLDER. RAIN SHOWERS, POSSIBLY MIXED WITH  
SNOW SHOWERS. SNOW ACCUMULATION UP TO 1 INCH. HIGHS AROUND 39.  
NORTH WINDS 15 TO 25 MPH. CHANCE OF PRECIPITATION 80 PERCENT.    
TUESDAY NIGHT
 
BREEZY, CLOUDY. A 50 PERCENT CHANCE OF SNOW  
SHOWERS, POSSIBLY MIXED WITH RAIN SHOWERS IN THE EVENING. SNOW  
ACCUMULATION UP TO 1 INCH. TOTAL SNOW ACCUMULATION UP TO  
2 INCHES. LOWS AROUND 28. NORTHWEST WINDS 15 TO 20 MPH.    
WEDNESDAY
 
PARTLY CLOUDY IN THE MORNING THEN CLEARING. HIGHS  
44 TO 49.    
WEDNESDAY NIGHT
 
PARTLY CLOUDY. LOWS IN THE LOWER TO MID 30S.    
THURSDAY
 
NOT AS COOL. PARTLY CLOUDY IN THE MORNING THEN  
CLEARING. HIGHS IN THE MID TO UPPER 50S.    
THURSDAY NIGHT
 
MOSTLY CLEAR IN THE EVENING THEN BECOMING  
PARTLY CLOUDY. LOWS IN THE LOWER TO MID 30S.    
FRIDAY
 
MOSTLY SUNNY. HIGHS IN THE MID TO UPPER 50S.    
FRIDAY NIGHT
 
PARTLY CLOUDY. LOWS IN THE MID 30S TO LOWER 40S.    
SATURDAY
 
PARTLY CLOUDY. HIGHS IN THE MID 50S TO LOWER 60S.    
SATURDAY NIGHT
 
PARTLY CLOUDY. LOWS IN THE UPPER 30S.    
SUNDAY
 
BREEZY. PARTLY CLOUDY. HIGHS NEAR 60.  
 

 
 
WYZ027-181000-  
SOUTH LINCOLN COUNTY-  
INCLUDING THE CITIES OF KEMMERER AND COKEVILLE  
1036 PM MDT SUN OCT 17 2021  
   
REST OF TONIGHT
 
PARTLY CLOUDY. LOWS AROUND 36.    
MONDAY
 
PARTLY CLOUDY IN THE MORNING, THEN MOSTLY CLOUDY WITH  
CHANCE OF RAIN EARLY IN THE AFTERNOON. MOSTLY CLOUDY WITH RAIN  
LIKELY LATE IN THE AFTERNOON. HIGHS 50 TO 54. SOUTH WINDS AROUND  
15 MPH IN THE AFTERNOON. CHANCE OF RAIN 60 PERCENT.    
MONDAY NIGHT
 
RAIN AND SNOW IN THE EVENING, THEN SNOW AFTER  
MIDNIGHT. SNOW ACCUMULATION AROUND 2 INCHES. LOWS AROUND 28. WEST  
WINDS AROUND 15 MPH EARLY IN THE EVENING BECOMING WEST AROUND  
15 MPH AFTER MIDNIGHT. CHANCE OF PRECIPITATION 80 PERCENT.    
TUESDAY
 
CLOUDY WITH A 40 PERCENT CHANCE OF SNOW SHOWERS,  
POSSIBLY MIXED WITH RAIN SHOWERS IN THE MORNING, THEN PARTLY  
CLOUDY IN THE AFTERNOON. HIGHS 40 TO 44. WEST WINDS AROUND  
15 MPH.    
TUESDAY NIGHT
 
PARTLY CLOUDY. LOWS AROUND 22. WEST WINDS AROUND  
15 MPH IN THE EVENING.    
WEDNESDAY
 
PARTLY CLOUDY. HIGHS IN THE MID TO UPPER 40S.    
WEDNESDAY NIGHT
 
MOSTLY CLOUDY IN THE EVENING THEN BECOMING  
PARTLY CLOUDY. LOWS IN THE MID 20S.    
THURSDAY
 
PARTLY CLOUDY IN THE MORNING THEN CLEARING. HIGHS IN  
THE LOWER TO MID 50S.    
THURSDAY NIGHT
 
MOSTLY CLEAR. LOWS IN THE MID 20S.    
FRIDAY
 
PARTLY CLOUDY. HIGHS IN THE MID 50S.    
FRIDAY NIGHT
 
PARTLY CLOUDY. CHANCE OF RAIN SHOWERS, POSSIBLY  
MIXED WITH SNOW SHOWERS AFTER MIDNIGHT. LOWS IN THE UPPER 20S.  
CHANCE OF PRECIPITATION 30 PERCENT.    
SATURDAY
 
MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS, POSSIBLY MIXED  
WITH SNOW SHOWERS IN THE MORNING, THEN CHANCE OF RAIN SHOWERS IN  
THE AFTERNOON. HIGHS NEAR 50. CHANCE OF PRECIPITATION 30 PERCENT.   
SATURDAY NIGHT
 
MOSTLY CLOUDY WITH A 30 PERCENT CHANCE OF RAIN  
SHOWERS AND SNOW SHOWERS. LOWS IN THE UPPER 20S.    
SUNDAY
 
MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS, POSSIBLY MIXED  
WITH SNOW SHOWERS IN THE MORNING, THEN CHANCE OF RAIN SHOWERS IN  
THE AFTERNOON. HIGHS IN THE MID 40S TO LOWER 50S. CHANCE OF  
PRECIPITATION 40 PERCENT.  
 

 
 
WYZ016-181000-  
UPPER WIND RIVER BASIN-  
INCLUDING THE CITY OF DUBOIS  
1036 PM MDT SUN OCT 17 2021  
   
REST OF TONIGHT
 
PARTLY CLOUDY. LOWS 36 TO 40.    
MONDAY
 
PARTLY CLOUDY WITH CHANCE OF SNOW AND RAIN IN THE  
MORNING, THEN MOSTLY CLOUDY WITH CHANCE OF RAIN IN THE AFTERNOON.  
HIGHS 49 TO 54. CHANCE OF PRECIPITATION 30 PERCENT.    
MONDAY NIGHT
 
COLDER, CLOUDY. CHANCE OF RAIN, POSSIBLY MIXED  
WITH SNOW IN THE EVENING. SLIGHT CHANCE OF THUNDERSTORMS THROUGH  
THE NIGHT. SNOW, POSSIBLY MIXED WITH RAIN AFTER MIDNIGHT. SNOW  
ACCUMULATION OF 1 TO 2 INCHES. LOWS 28 TO 32. CHANCE OF  
PRECIPITATION 70 PERCENT.    
TUESDAY
 
COLDER, CLOUDY. SNOW SHOWERS, POSSIBLY MIXED WITH RAIN  
SHOWERS IN THE MORNING, THEN CHANCE OF RAIN SHOWERS, POSSIBLY  
MIXED WITH SNOW SHOWERS IN THE AFTERNOON. SNOW ACCUMULATION UP TO  
1 INCH. TOTAL SNOW ACCUMULATION 1 TO 3 INCHES. HIGHS AROUND 41.  
NORTHEAST WINDS AROUND 15 MPH IN THE AFTERNOON. CHANCE OF  
PRECIPITATION 60 PERCENT.    
TUESDAY NIGHT
 
PARTLY CLOUDY. LOWS 24 TO 28. SOUTHWEST WINDS  
AROUND 15 MPH IN THE EVENING.    
WEDNESDAY
 
PARTLY CLOUDY. HIGHS IN THE UPPER 40S.    
WEDNESDAY NIGHT
 
PARTLY CLOUDY. LOWS 28 TO 33.    
THURSDAY
 
PARTLY CLOUDY IN THE MORNING THEN CLEARING. HIGHS  
NEAR 50.    
THURSDAY NIGHT
 
MOSTLY CLEAR IN THE EVENING THEN BECOMING  
PARTLY CLOUDY. LOWS 29 TO 34.    
FRIDAY
 
PARTLY CLOUDY. HIGHS IN THE LOWER TO MID 50S.    
FRIDAY NIGHT
 
PARTLY CLOUDY. CHANCE OF RAIN SHOWERS, POSSIBLY  
MIXED WITH SNOW SHOWERS AFTER MIDNIGHT. LOWS IN THE LOWER TO MID  
30S. CHANCE OF PRECIPITATION 30 PERCENT.    
SATURDAY
 
PARTLY CLOUDY WITH A 30 PERCENT CHANCE OF RAIN  
SHOWERS AND SNOW SHOWERS. HIGHS 47 TO 52.    
SATURDAY NIGHT
 
PARTLY CLOUDY IN THE EVENING THEN BECOMING  
MOSTLY CLOUDY. A 30 PERCENT CHANCE OF RAIN SHOWERS AND SNOW  
SHOWERS. LOWS NEAR 30.    
SUNDAY
 
PARTLY CLOUDY. CHANCE OF RAIN SHOWERS, POSSIBLY MIXED  
WITH SNOW SHOWERS IN THE MORNING, THEN CHANCE OF RAIN SHOWERS IN  
THE AFTERNOON. HIGHS 46 TO 51. CHANCE OF PRECIPITATION  
40 PERCENT.  
 

 
 
WYZ001-181000-  
YELLOWSTONE NATIONAL PARK-  
INCLUDING THE CITIES OF LAKE, MAMMOTH, AND OLD FAITHFUL  
1036 PM MDT SUN OCT 17 2021  
   
REST OF TONIGHT
 
PARTLY CLOUDY. LOWS 28 TO 34. SOUTH WINDS  
AROUND 15 MPH AFTER MIDNIGHT.    
MONDAY
 
PARTLY CLOUDY UNTIL LATE AFTERNOON, THEN CLOUDY WITH  
RAIN LIKELY, POSSIBLY MIXED WITH SNOW LATE IN THE AFTERNOON. NO  
SNOW ACCUMULATION. HIGHS 43 TO 49. CHANCE OF PRECIPITATION  
60 PERCENT.    
MONDAY NIGHT
 
CLOUDY. RAIN AND SLIGHT CHANCE OF THUNDERSTORMS  
IN THE EVENING. SNOW THROUGH THE NIGHT. SNOW ACCUMULATION UP TO  
1 INCH. LOWS 23 TO 29. CHANCE OF PRECIPITATION 80 PERCENT.    
TUESDAY
 
MOSTLY CLOUDY WITH A 30 PERCENT CHANCE OF SNOW SHOWERS  
IN THE MORNING, THEN PARTLY CLOUDY IN THE AFTERNOON. HIGHS 34 TO  
40.    
TUESDAY NIGHT
 
PARTLY CLOUDY. LOWS 19 TO 25.    
WEDNESDAY
 
PARTLY CLOUDY. HIGHS 40 TO 46.    
WEDNESDAY NIGHT
 
PARTLY CLOUDY IN THE EVENING THEN BECOMING  
MOSTLY CLOUDY. LOWS 23 TO 29.    
THURSDAY
 
PARTLY CLOUDY. HIGHS 40 TO 48.    
THURSDAY NIGHT
 
MOSTLY CLEAR IN THE EVENING THEN BECOMING  
PARTLY CLOUDY. LOWS 23 TO 29.    
FRIDAY
 
PARTLY CLOUDY. HIGHS 45 TO 51.    
FRIDAY NIGHT
 
PARTLY CLOUDY IN THE EVENING THEN BECOMING MOSTLY  
CLOUDY. A 40 PERCENT CHANCE OF RAIN SHOWERS, POSSIBLY MIXED WITH  
SNOW SHOWERS. LOWS 24 TO 30.    
SATURDAY
 
MOSTLY CLOUDY WITH A 30 PERCENT CHANCE OF SNOW  
SHOWERS. HIGHS 36 TO 42.    
SATURDAY NIGHT
 
MOSTLY CLOUDY WITH A 40 PERCENT CHANCE OF SNOW  
SHOWERS. LOWS 23 TO 29.    
SUNDAY
 
CLOUDY. CHANCE OF SNOW SHOWERS IN THE MORNING, THEN  
SNOW SHOWERS, POSSIBLY MIXED WITH RAIN SHOWERS IN THE AFTERNOON.  
HIGHS 35 TO 41. CHANCE OF PRECIPITATION 60 PERCENT.  
 

 
 
WYZ029-181000-  
FLAMING GORGE-  
1036 PM MDT SUN OCT 17 2021  
   
REST OF TONIGHT
 
MOSTLY CLEAR LATE IN THE EVENING THEN BECOMING  
PARTLY CLOUDY. LOWS 36 TO 40. SOUTH WINDS AROUND 15 MPH.    
MONDAY
 
BREEZY. PARTLY CLOUDY. A 30 PERCENT CHANCE OF RAIN LATE  
IN THE AFTERNOON. HIGHS 52 TO 57. SOUTH WINDS 15 TO 25 MPH WITH  
GUSTS TO AROUND 40 MPH.    
MONDAY NIGHT
 
BREEZY, CLOUDY. CHANCE OF SNOW IN THE EVENING.  
RAIN LIKELY THROUGH THE NIGHT. SNOW LIKELY AFTER MIDNIGHT. SNOW  
ACCUMULATION AROUND 2 INCHES. LOWS AROUND 30. WEST WINDS 15 TO  
25 MPH IN THE EVENING BECOMING SOUTHWEST AROUND 15 MPH EARLY IN  
THE MORNING. CHANCE OF PRECIPITATION 70 PERCENT.    
TUESDAY
 
CLOUDY. SNOW SHOWERS LIKELY, POSSIBLY MIXED WITH RAIN  
SHOWERS IN THE MORNING, THEN CHANCE OF RAIN SHOWERS, POSSIBLY  
MIXED WITH SNOW SHOWERS IN THE AFTERNOON. SNOW ACCUMULATION UP TO  
1 INCH. TOTAL SNOW ACCUMULATION 2 TO 3 INCHES. HIGHS 41 TO 46.  
WEST WINDS AROUND 15 MPH. CHANCE OF PRECIPITATION 60 PERCENT.    
TUESDAY NIGHT
 
PARTLY CLOUDY. LOWS AROUND 24. SOUTHWEST WINDS  
AROUND 15 MPH IN THE EVENING.    
WEDNESDAY
 
PARTLY CLOUDY. HIGHS IN THE 40S.    
WEDNESDAY NIGHT
 
MOSTLY CLOUDY. LOWS IN THE MID 20S TO LOWER  
30S.    
THURSDAY
 
PARTLY CLOUDY IN THE MORNING THEN CLEARING. HIGHS IN  
THE LOWER TO MID 50S.    
THURSDAY NIGHT
 
MOSTLY CLEAR. LOWS NEAR 30.    
FRIDAY
 
PARTLY CLOUDY. HIGHS IN THE 50S.    
FRIDAY NIGHT
 
PARTLY CLOUDY. LOWS IN THE LOWER 30S.    
SATURDAY
 
MOSTLY CLOUDY. HIGHS IN THE LOWER TO MID 50S.    
SATURDAY NIGHT
 
MOSTLY CLOUDY. A 20 PERCENT CHANCE OF RAIN  
SHOWERS AND SNOW SHOWERS AFTER MIDNIGHT. LOWS IN THE LOWER TO MID  
30S.    
SUNDAY
 
MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS, POSSIBLY MIXED  
WITH SNOW SHOWERS IN THE MORNING, THEN CHANCE OF RAIN SHOWERS IN  
THE AFTERNOON. HIGHS 50 TO 55. CHANCE OF PRECIPITATION  
30 PERCENT.  
 

 
 
WYZ022-181000-  
CASPER MOUNTAIN-  
1036 PM MDT SUN OCT 17 2021  
 
...WINTER STORM WATCH IN EFFECT FROM LATE MONDAY NIGHT THROUGH  
TUESDAY EVENING...  
   
REST OF TONIGHT
 
BREEZY. MOSTLY CLEAR LATE IN THE EVENING THEN  
BECOMING PARTLY CLOUDY. LOWS 39 TO 45. SOUTH WINDS 15 TO 20 MPH.    
MONDAY
 
BREEZY. PARTLY CLOUDY EARLY IN THE MORNING THEN  
CLEARING. HIGHS 53 TO 59. SOUTHWEST WINDS 15 TO 25 MPH.    
MONDAY NIGHT
 
COLDER, CLOUDY. CHANCE OF RAIN IN THE EVENING,  
THEN RAIN LIKELY AFTER MIDNIGHT. SNOW AFTER MIDNIGHT. SNOW  
ACCUMULATION OF 1 TO 2 INCHES. LOWS AROUND 30. SOUTHWEST WINDS  
AROUND 15 MPH EARLY IN THE MORNING. CHANCE OF PRECIPITATION  
80 PERCENT.    
TUESDAY
 
BREEZY, COLDER. SNOW SHOWERS. SNOW MAY BE HEAVY AT  
TIMES. SNOW ACCUMULATION OF 11 TO 15 INCHES. HIGHS 31 TO 37.  
NORTHWEST WINDS 15 TO 20 MPH. CHANCE OF SNOW 90 PERCENT.    
TUESDAY NIGHT
 
BREEZY, CLOUDY. A 50 PERCENT CHANCE OF SNOW  
SHOWERS IN THE EVENING. SNOW ACCUMULATION OF 2 TO 3 INCHES. TOTAL  
SNOW ACCUMULATION 14 TO 20 INCHES. NEAR STEADY TEMPERATURE IN THE  
UPPER 20S. NORTHWEST WINDS 15 TO 20 MPH.    
WEDNESDAY
 
PARTLY CLOUDY. HIGHS 34 TO 40.    
WEDNESDAY NIGHT
 
PARTLY CLOUDY. LOWS 26 TO 32.    
THURSDAY
 
PARTLY CLOUDY IN THE MORNING THEN CLEARING. HIGHS  
38 TO 44.    
THURSDAY NIGHT
 
MOSTLY CLEAR. LOWS 27 TO 33.    
FRIDAY
 
MOSTLY SUNNY. HIGHS 42 TO 48.    
FRIDAY NIGHT
 
PARTLY CLOUDY. LOWS 31 TO 37.    
SATURDAY
 
PARTLY CLOUDY. HIGHS 43 TO 49.    
SATURDAY NIGHT
 
MOSTLY CLOUDY IN THE EVENING THEN BECOMING  
PARTLY CLOUDY. LOWS 31 TO 37.    
SUNDAY
 
BREEZY. PARTLY CLOUDY. HIGHS 43 TO 49.  
 

 
 
WYZ002-181000-  
ABSAROKA MOUNTAINS-  
1036 PM MDT SUN OCT 17 2021  
   
REST OF TONIGHT
 
BREEZY. PARTLY CLOUDY. LOWS 31 TO 39. WEST  
WINDS AROUND 15 MPH SHIFTING TO THE SOUTHWEST AFTER MIDNIGHT.    
MONDAY
 
PARTLY CLOUDY EARLY IN THE MORNING, THEN MOSTLY CLOUDY  
WITH CHANCE OF RAIN AND SNOW IN THE LATE MORNING AND AFTERNOON.  
HIGHS 39 TO 49. SOUTHWEST WINDS AROUND 15 MPH EARLY IN THE  
MORNING. CHANCE OF PRECIPITATION 40 PERCENT.    
MONDAY NIGHT
 
BREEZY, COLDER. RAIN LIKELY IN THE EVENING. SNOW  
AND SLIGHT CHANCE OF THUNDERSTORMS THROUGH THE NIGHT. SNOW  
ACCUMULATION OF 1 TO 2 INCHES. LOWS 22 TO 30. NORTHEAST WINDS  
15 TO 20 MPH IN THE LATE EVENING AND OVERNIGHT. CHANCE OF  
PRECIPITATION 80 PERCENT.    
TUESDAY
 
MOSTLY CLOUDY. SNOW SHOWERS LIKELY IN THE MORNING,  
THEN CHANCE OF SNOW SHOWERS, POSSIBLY MIXED WITH RAIN SHOWERS IN  
THE AFTERNOON. SNOW ACCUMULATION UP TO 2 INCHES. TOTAL SNOW  
ACCUMULATION 1 TO 4 INCHES. HIGHS 31 TO 39. NORTH WINDS AROUND  
15 MPH. CHANCE OF PRECIPITATION 60 PERCENT.    
TUESDAY NIGHT
 
PARTLY CLOUDY. LOWS 17 TO 25. NORTHWEST WINDS  
AROUND 15 MPH SHIFTING TO THE WEST AFTER MIDNIGHT.    
WEDNESDAY
 
PARTLY CLOUDY. HIGHS 34 TO 44.    
WEDNESDAY NIGHT
 
PARTLY CLOUDY. LOWS 23 TO 31.    
THURSDAY
 
BREEZY. PARTLY CLOUDY. HIGHS 36 TO 46.    
THURSDAY NIGHT
 
MOSTLY CLEAR IN THE EVENING THEN BECOMING  
PARTLY CLOUDY. LOWS 23 TO 33.    
FRIDAY
 
PARTLY CLOUDY. HIGHS 40 TO 50.    
FRIDAY NIGHT
 
BREEZY. PARTLY CLOUDY WITH A 30 PERCENT CHANCE OF  
RAIN SHOWERS AND SNOW SHOWERS. LOWS 26 TO 34.    
SATURDAY
 
BREEZY. PARTLY CLOUDY. CHANCE OF SNOW SHOWERS IN THE  
MORNING, THEN CHANCE OF SNOW SHOWERS, POSSIBLY MIXED WITH RAIN  
SHOWERS IN THE AFTERNOON. HIGHS 33 TO 43. CHANCE OF PRECIPITATION  
30 PERCENT.    
SATURDAY NIGHT
 
PARTLY CLOUDY IN THE EVENING THEN BECOMING  
MOSTLY CLOUDY. A 30 PERCENT CHANCE OF SNOW SHOWERS. LOWS 23 TO  
31.    
SUNDAY
 
BREEZY. MOSTLY CLOUDY. CHANCE OF SNOW SHOWERS IN THE  
MORNING, THEN CHANCE OF SNOW SHOWERS, POSSIBLY MIXED WITH RAIN  
SHOWERS IN THE AFTERNOON. HIGHS 33 TO 43. CHANCE OF PRECIPITATION  
50 PERCENT.  
 

 
 
WYZ007-181000-  
OWL CREEK AND BRIDGER MOUNTAINS-  
1036 PM MDT SUN OCT 17 2021  
   
REST OF TONIGHT
 
PARTLY CLOUDY. LOWS AROUND 42. SOUTH WINDS  
AROUND 15 MPH.    
MONDAY
 
PARTLY CLOUDY THEN BECOMING MOSTLY SUNNY LATE IN THE  
MORNING THEN BECOMING PARTLY CLOUDY. HIGHS 53 TO 59. SOUTH WINDS  
AROUND 15 MPH UNTIL LATE AFTERNOON.    
MONDAY NIGHT
 
BREEZY, COLDER, CLOUDY. CHANCE OF RAIN IN THE  
EVENING, THEN SNOW, POSSIBLY MIXED WITH RAIN AFTER MIDNIGHT. SNOW  
ACCUMULATION AROUND 1 INCH. LOWS 29 TO 35. NORTH WINDS 15 TO  
20 MPH AFTER MIDNIGHT. CHANCE OF PRECIPITATION 80 PERCENT.    
TUESDAY
 
BREEZY, COLDER, CLOUDY. SNOW SHOWERS, POSSIBLY MIXED  
WITH RAIN SHOWERS IN THE MORNING, THEN SNOW SHOWERS LIKELY,  
POSSIBLY MIXED WITH RAIN SHOWERS IN THE AFTERNOON. SNOW MAY BE  
HEAVY AT TIMES IN THE MORNING. SNOW ACCUMULATION OF 1 TO  
8 INCHES. TOTAL SNOW ACCUMULATION 2 TO 9 INCHES. HIGHS 33 TO 39.  
NORTH WINDS 15 TO 20 MPH. CHANCE OF PRECIPITATION 80 PERCENT.    
TUESDAY NIGHT
 
PARTLY CLOUDY. A 30 PERCENT CHANCE OF SNOW  
SHOWERS IN THE EVENING. LOWS 25 TO 31. NORTHWEST WINDS AROUND  
15 MPH IN THE EVENING.    
WEDNESDAY
 
NOT AS COOL. PARTLY CLOUDY. HIGHS 39 TO 47.    
WEDNESDAY NIGHT
 
PARTLY CLOUDY IN THE EVENING THEN BECOMING  
MOSTLY CLOUDY. LOWS 30 TO 36.    
THURSDAY
 
PARTLY CLOUDY IN THE MORNING THEN CLEARING. HIGHS  
45 TO 53.    
THURSDAY NIGHT
 
MOSTLY CLEAR IN THE EVENING THEN BECOMING  
PARTLY CLOUDY. LOWS 31 TO 37.    
FRIDAY
 
PARTLY CLOUDY. HIGHS 48 TO 56.    
FRIDAY NIGHT
 
PARTLY CLOUDY. LOWS 34 TO 40.    
SATURDAY
 
PARTLY CLOUDY. HIGHS 47 TO 55.    
SATURDAY NIGHT
 
MOSTLY CLOUDY IN THE EVENING THEN BECOMING  
PARTLY CLOUDY. LOWS 32 TO 38.    
SUNDAY
 
PARTLY CLOUDY. CHANCE OF RAIN SHOWERS IN THE AFTERNOON.  
HIGHS 46 TO 54. CHANCE OF SHOWERS 30 PERCENT.  
 

 
 
WYZ008-181000-  
BIGHORN MOUNTAINS WEST-  
1036 PM MDT SUN OCT 17 2021  
 
...WINTER STORM WATCH IN EFFECT FROM LATE MONDAY NIGHT THROUGH  
TUESDAY EVENING...  
   
REST OF TONIGHT
 
BREEZY. PARTLY CLOUDY. LOWS 35 TO 45. SOUTH  
WINDS 15 TO 20 MPH.    
MONDAY
 
PARTLY CLOUDY THEN BECOMING MOSTLY SUNNY EARLY IN THE  
AFTERNOON THEN BECOMING PARTLY CLOUDY. HIGHS 47 TO 57.    
MONDAY NIGHT
 
BREEZY, COLDER, CLOUDY. CHANCE OF SNOW IN THE  
EVENING. CHANCE OF RAIN UNTIL EARLY MORNING. SNOW LIKELY AFTER  
MIDNIGHT. SNOW ACCUMULATION UP TO 1 INCH. LOWS 25 TO 33.  
NORTHEAST WINDS 15 TO 20 MPH IN THE LATE EVENING AND OVERNIGHT.  
CHANCE OF PRECIPITATION 60 PERCENT.    
TUESDAY
 
BREEZY, COLDER. SNOW SHOWERS, POSSIBLY MIXED WITH RAIN  
SHOWERS. SNOW MAY BE HEAVY AT TIMES IN THE MORNING. SNOW  
ACCUMULATION OF 1 TO 7 INCHES. TOTAL SNOW ACCUMULATION 1 TO  
8 INCHES. HIGHS 31 TO 37. NORTH WINDS 15 TO 20 MPH. CHANCE OF  
PRECIPITATION 80 PERCENT.    
TUESDAY NIGHT
 
COLDER. MOSTLY CLOUDY WITH A 30 PERCENT CHANCE  
OF SNOW SHOWERS IN THE EVENING, THEN PARTLY CLOUDY AFTER  
MIDNIGHT. LOWS 19 TO 29. NORTHWEST WINDS AROUND 15 MPH IN THE  
EVENING.    
WEDNESDAY
 
NOT AS COOL. MOSTLY SUNNY IN THE MORNING THEN  
BECOMING PARTLY CLOUDY. HIGHS 36 TO 46.    
WEDNESDAY NIGHT
 
PARTLY CLOUDY IN THE EVENING THEN BECOMING  
MOSTLY CLOUDY. LOWS 25 TO 35.    
THURSDAY
 
PARTLY CLOUDY IN THE MORNING THEN CLEARING. HIGHS  
39 TO 49.    
THURSDAY NIGHT
 
MOSTLY CLEAR IN THE EVENING THEN BECOMING  
PARTLY CLOUDY. LOWS 27 TO 37.    
FRIDAY
 
PARTLY CLOUDY. HIGHS 44 TO 54.    
FRIDAY NIGHT
 
PARTLY CLOUDY. LOWS 30 TO 40.    
SATURDAY
 
PARTLY CLOUDY. HIGHS 41 TO 51.    
SATURDAY NIGHT
 
MOSTLY CLOUDY IN THE EVENING THEN BECOMING  
PARTLY CLOUDY. LOWS 27 TO 37.    
SUNDAY
 
PARTLY CLOUDY. HIGHS 41 TO 51.  
 

 
 
WYZ009-181000-  
BIGHORN MOUNTAINS SOUTHEAST-  
1036 PM MDT SUN OCT 17 2021  
 
...WINTER STORM WATCH IN EFFECT FROM LATE MONDAY NIGHT THROUGH  
TUESDAY EVENING...  
   
REST OF TONIGHT
 
BREEZY. MOSTLY CLEAR LATE IN THE EVENING THEN  
BECOMING PARTLY CLOUDY. LOWS 37 TO 47. WEST WINDS 15 TO 25 MPH.    
MONDAY
 
PARTLY CLOUDY THEN BECOMING MOSTLY SUNNY IN THE LATE  
MORNING AND EARLY AFTERNOON THEN BECOMING PARTLY CLOUDY. HIGHS  
49 TO 59. SOUTHWEST WINDS AROUND 15 MPH SHIFTING TO THE SOUTH  
LATE IN THE AFTERNOON.    
MONDAY NIGHT
 
COLDER, CLOUDY. CHANCE OF RAIN, POSSIBLY MIXED  
WITH SNOW IN THE EVENING, THEN RAIN LIKELY AFTER MIDNIGHT. SNOW  
AFTER MIDNIGHT. SNOW ACCUMULATION OF 1 TO 2 INCHES. LOWS 26 TO  
32. NORTH WINDS AROUND 15 MPH EARLY IN THE MORNING. CHANCE OF  
PRECIPITATION 80 PERCENT.    
TUESDAY
 
BREEZY, COLDER. SNOW SHOWERS, POSSIBLY MIXED WITH RAIN  
SHOWERS IN THE MORNING, THEN SNOW SHOWERS LIKELY IN THE  
AFTERNOON. SNOW MAY BE HEAVY AT TIMES IN THE MORNING. SNOW  
ACCUMULATION OF 4 TO 9 INCHES. TOTAL SNOW ACCUMULATION 5 TO  
11 INCHES. HIGHS 31 TO 37. NORTHWEST WINDS 15 TO 20 MPH. CHANCE  
OF PRECIPITATION 80 PERCENT.    
TUESDAY NIGHT
 
COLDER. MOSTLY CLOUDY. A 40 PERCENT CHANCE OF  
SNOW SHOWERS IN THE EVENING. LOWS 19 TO 27. NORTHWEST WINDS  
AROUND 15 MPH.    
WEDNESDAY
 
NOT AS COOL. PARTLY CLOUDY IN THE MORNING THEN  
CLEARING. HIGHS 37 TO 45.    
WEDNESDAY NIGHT
 
PARTLY CLOUDY IN THE EVENING THEN BECOMING  
MOSTLY CLOUDY. LOWS 26 TO 34.    
THURSDAY
 
PARTLY CLOUDY IN THE MORNING THEN CLEARING. HIGHS  
40 TO 50.    
THURSDAY NIGHT
 
MOSTLY CLEAR IN THE EVENING THEN BECOMING  
PARTLY CLOUDY. LOWS 27 TO 35.    
FRIDAY
 
PARTLY CLOUDY. HIGHS 44 TO 54.    
FRIDAY NIGHT
 
PARTLY CLOUDY. LOWS 29 TO 39.    
SATURDAY
 
PARTLY CLOUDY. HIGHS 41 TO 51.    
SATURDAY NIGHT
 
PARTLY CLOUDY. LOWS 27 TO 37.    
SUNDAY
 
BREEZY. PARTLY CLOUDY. HIGHS 42 TO 52.  
 

 
 
WYZ012-181000-  
TETON AND GROS VENTRE MOUNTAINS-  
1036 PM MDT SUN OCT 17 2021  
   
REST OF TONIGHT
 
MOSTLY CLEAR IN THE LATE EVENING AND EARLY  
MORNING THEN BECOMING PARTLY CLOUDY. A 30 PERCENT CHANCE OF SNOW  
EARLY IN THE MORNING. LOWS 29 TO 35. SOUTH WINDS AROUND 15 MPH  
AFTER MIDNIGHT.    
MONDAY
 
PARTLY CLOUDY IN THE MORNING THEN BECOMING CLOUDY.  
CHANCE OF SNOW UNTIL LATE AFTERNOON. CHANCE OF RAIN IN THE LATE  
MORNING AND EARLY AFTERNOON, THEN RAIN, POSSIBLY MIXED WITH SNOW  
AND THUNDERSTORMS LATE IN THE AFTERNOON. LITTLE OR NO SNOW  
ACCUMULATION. HIGHS 40 TO 48. CHANCE OF PRECIPITATION 70 PERCENT.   
MONDAY NIGHT
 
CLOUDY. SNOW, POSSIBLY MIXED WITH RAIN AND  
THUNDERSTORMS IN THE EVENING, THEN CHANCE OF SNOW AFTER MIDNIGHT.  
SNOW ACCUMULATION OF 1 TO 2 INCHES. LOWS 23 TO 29. CHANCE OF  
PRECIPITATION 80 PERCENT.    
TUESDAY
 
MOSTLY CLOUDY WITH A 40 PERCENT CHANCE OF SNOW  
SHOWERS. HIGHS 34 TO 40.    
TUESDAY NIGHT
 
PARTLY CLOUDY. LOWS 21 TO 27.    
WEDNESDAY
 
PARTLY CLOUDY. HIGHS 36 TO 46.    
WEDNESDAY NIGHT
 
PARTLY CLOUDY. LOWS 22 TO 30.    
THURSDAY
 
PARTLY CLOUDY. HIGHS 38 TO 48.    
THURSDAY NIGHT
 
MOSTLY CLEAR. LOWS 24 TO 30.    
FRIDAY
 
PARTLY CLOUDY. HIGHS 41 TO 51.    
FRIDAY NIGHT
 
PARTLY CLOUDY IN THE EVENING THEN BECOMING MOSTLY  
CLOUDY. A 40 PERCENT CHANCE OF RAIN SHOWERS AND SNOW SHOWERS.  
LOWS 26 TO 32.    
SATURDAY
 
MOSTLY CLOUDY. CHANCE OF SNOW SHOWERS IN THE MORNING,  
THEN CHANCE OF SNOW SHOWERS, POSSIBLY MIXED WITH RAIN SHOWERS IN  
THE AFTERNOON. HIGHS 33 TO 43. CHANCE OF PRECIPITATION  
40 PERCENT.    
SATURDAY NIGHT
 
MOSTLY CLOUDY WITH A 40 PERCENT CHANCE OF SNOW  
SHOWERS. LOWS 24 TO 30.    
SUNDAY
 
CLOUDY. SNOW SHOWERS LIKELY, POSSIBLY MIXED WITH RAIN  
SHOWERS IN THE MORNING, THEN SNOW SHOWERS, POSSIBLY MIXED WITH  
RAIN SHOWERS IN THE AFTERNOON. HIGHS 32 TO 42. CHANCE OF  
PRECIPITATION 60 PERCENT.  
 

 
 
WYZ014-181000-  
WIND RIVER MOUNTAINS WEST-  
1036 PM MDT SUN OCT 17 2021  
   
REST OF TONIGHT
 
PARTLY CLOUDY IN THE LATE EVENING AND  
OVERNIGHT, THEN A 30 PERCENT CHANCE OF SNOW EARLY IN THE MORNING.  
LOWS 29 TO 35. SOUTH WINDS AROUND 15 MPH.    
MONDAY
 
MOSTLY CLOUDY. CHANCE OF SNOW THROUGH THE DAY. CHANCE  
OF RAIN IN THE LATE MORNING AND AFTERNOON. SLIGHT CHANCE OF  
THUNDERSTORMS LATE IN THE AFTERNOON. HIGHS 37 TO 47. SOUTH WINDS  
AROUND 15 MPH IN THE AFTERNOON. CHANCE OF PRECIPITATION  
40 PERCENT.    
MONDAY NIGHT
 
COLDER. CHANCE OF RAIN AND SLIGHT CHANCE OF  
THUNDERSTORMS EARLY IN THE EVENING. SNOW THROUGH THE NIGHT. RAIN  
LIKELY LATE IN THE EVENING. SNOW ACCUMULATION OF 2 TO 4 INCHES.  
LOWS 20 TO 26. SOUTH WINDS AROUND 15 MPH EARLY IN THE EVENING.  
CHANCE OF PRECIPITATION 80 PERCENT.    
TUESDAY
 
CLOUDY. SNOW SHOWERS IN THE MORNING, THEN CHANCE OF  
SNOW SHOWERS, POSSIBLY MIXED WITH RAIN SHOWERS IN THE AFTERNOON.  
SNOW ACCUMULATION OF 1 TO 3 INCHES. TOTAL SNOW ACCUMULATION 3 TO  
7 INCHES. HIGHS 32 TO 38. NORTHWEST WINDS AROUND 15 MPH. CHANCE  
OF PRECIPITATION 80 PERCENT.    
TUESDAY NIGHT
 
MOSTLY CLOUDY. LOWS 18 TO 24. NORTH WINDS AROUND  
15 MPH IN THE EVENING.    
WEDNESDAY
 
PARTLY CLOUDY. HIGHS 32 TO 42.    
WEDNESDAY NIGHT
 
PARTLY CLOUDY. LOWS 20 TO 28.    
THURSDAY
 
PARTLY CLOUDY IN THE MORNING THEN CLEARING. HIGHS  
35 TO 45.    
THURSDAY NIGHT
 
MOSTLY CLEAR IN THE EVENING THEN BECOMING  
PARTLY CLOUDY. LOWS 21 TO 29.    
FRIDAY
 
PARTLY CLOUDY. HIGHS 38 TO 48.    
FRIDAY NIGHT
 
PARTLY CLOUDY IN THE EVENING, THEN MOSTLY CLOUDY  
WITH CHANCE OF SNOW SHOWERS AFTER MIDNIGHT. LOWS 23 TO 31. CHANCE  
OF SNOW 30 PERCENT.    
SATURDAY
 
BREEZY. PARTLY CLOUDY. CHANCE OF SNOW SHOWERS IN THE  
MORNING, THEN CHANCE OF SNOW SHOWERS, POSSIBLY MIXED WITH RAIN  
SHOWERS IN THE AFTERNOON. HIGHS 33 TO 43. CHANCE OF PRECIPITATION  
30 PERCENT.    
SATURDAY NIGHT
 
MOSTLY CLOUDY WITH A 30 PERCENT CHANCE OF SNOW  
SHOWERS. LOWS 21 TO 29.    
SUNDAY
 
BREEZY. MOSTLY CLOUDY. CHANCE OF SNOW SHOWERS IN THE  
MORNING, THEN CHANCE OF SNOW SHOWERS, POSSIBLY MIXED WITH RAIN  
SHOWERS IN THE AFTERNOON. HIGHS 31 TO 41. CHANCE OF PRECIPITATION  
50 PERCENT.  
 

 
 
WYZ015-181000-  
WIND RIVER MOUNTAINS EAST-  
1036 PM MDT SUN OCT 17 2021  
 
...WINTER STORM WATCH IN EFFECT FROM LATE MONDAY NIGHT THROUGH  
TUESDAY AFTERNOON...  
   
REST OF TONIGHT
 
BREEZY. PARTLY CLOUDY. A 30 PERCENT CHANCE OF  
SNOW EARLY IN THE MORNING. LOWS 30 TO 38. SOUTHWEST WINDS 15 TO  
20 MPH.    
MONDAY
 
PARTLY CLOUDY IN THE MORNING THEN BECOMING MOSTLY  
CLOUDY. CHANCE OF SNOW THROUGH THE DAY. CHANCE OF RAIN IN THE  
LATE MORNING AND AFTERNOON. SLIGHT CHANCE OF THUNDERSTORMS LATE  
IN THE AFTERNOON. LITTLE OR NO SNOW ACCUMULATION. HIGHS 37 TO 47.  
SOUTHWEST WINDS AROUND 15 MPH EARLY IN THE MORNING BECOMING  
SOUTHEAST AROUND 15 MPH LATE IN THE AFTERNOON. CHANCE OF  
PRECIPITATION 50 PERCENT.    
MONDAY NIGHT
 
COLDER. SNOW LIKELY, POSSIBLY MIXED WITH RAIN IN  
THE EVENING. SLIGHT CHANCE OF THUNDERSTORMS THROUGH THE NIGHT.  
SNOW AFTER MIDNIGHT. SNOW MAY BE HEAVY AT TIMES AFTER MIDNIGHT.  
SNOW ACCUMULATION OF 3 TO 5 INCHES. LOWS 20 TO 28. SOUTH WINDS  
AROUND 15 MPH EARLY IN THE EVENING. CHANCE OF PRECIPITATION  
80 PERCENT.    
TUESDAY
 
CLOUDY. SNOW SHOWERS IN THE MORNING, THEN CHANCE OF  
SNOW SHOWERS IN THE AFTERNOON. SNOW MAY BE HEAVY AT TIMES IN THE  
MORNING. SNOW ACCUMULATION OF 2 TO 6 INCHES. TOTAL SNOW  
ACCUMULATION 5 TO 11 INCHES. HIGHS 31 TO 37. NORTH WINDS AROUND  
15 MPH. CHANCE OF SNOW 80 PERCENT.    
TUESDAY NIGHT
 
MOSTLY CLOUDY IN THE EVENING THEN BECOMING  
PARTLY CLOUDY. LOWS 17 TO 25. WEST WINDS AROUND 15 MPH AFTER  
MIDNIGHT.    
WEDNESDAY
 
PARTLY CLOUDY. HIGHS 31 TO 41.    
WEDNESDAY NIGHT
 
PARTLY CLOUDY. LOWS 20 TO 30.    
THURSDAY
 
BREEZY. PARTLY CLOUDY IN THE MORNING THEN CLEARING.  
HIGHS 34 TO 44.    
THURSDAY NIGHT
 
MOSTLY CLEAR IN THE EVENING THEN BECOMING  
PARTLY CLOUDY. LOWS 21 TO 31.    
FRIDAY
 
PARTLY CLOUDY. HIGHS 37 TO 47.    
FRIDAY NIGHT
 
BREEZY. PARTLY CLOUDY WITH A 30 PERCENT CHANCE OF  
SNOW SHOWERS. LOWS 23 TO 33.    
SATURDAY
 
BREEZY. MOSTLY CLOUDY WITH CHANCE OF SNOW SHOWERS IN  
THE MORNING, THEN PARTLY CLOUDY WITH CHANCE OF SNOW SHOWERS,  
POSSIBLY MIXED WITH RAIN SHOWERS IN THE AFTERNOON. HIGHS 32 TO  
42. CHANCE OF PRECIPITATION 30 PERCENT.    
SATURDAY NIGHT
 
BREEZY. MOSTLY CLOUDY WITH A 30 PERCENT CHANCE  
OF SNOW SHOWERS. LOWS 21 TO 31.    
SUNDAY
 
BREEZY. MOSTLY CLOUDY. CHANCE OF SNOW SHOWERS IN THE  
MORNING, THEN CHANCE OF SNOW SHOWERS, POSSIBLY MIXED WITH RAIN  
SHOWERS IN THE AFTERNOON. HIGHS 31 TO 41. CHANCE OF PRECIPITATION  
40 PERCENT.  
 

 
 
WYZ019-181000-  
GREEN MOUNTAINS AND RATTLESNAKE RANGE-  
INCLUDING THE CITY OF JEFFREY CITY  
1036 PM MDT SUN OCT 17 2021  
 
...WINTER STORM WATCH IN EFFECT FROM LATE MONDAY NIGHT THROUGH  
TUESDAY AFTERNOON...  
   
REST OF TONIGHT
 
BREEZY. PARTLY CLOUDY LATE IN THE EVENING THEN  
CLEARING. LOWS 36 TO 42. SOUTH WINDS 15 TO 20 MPH.    
MONDAY
 
BREEZY. MOSTLY SUNNY UNTIL LATE AFTERNOON THEN BECOMING  
PARTLY CLOUDY. HIGHS 53 TO 59. SOUTH WINDS 15 TO 25 MPH.    
MONDAY NIGHT
 
CLOUDY. CHANCE OF RAIN IN THE EVENING, THEN RAIN  
AFTER MIDNIGHT. SNOW AFTER MIDNIGHT. SNOW ACCUMULATION AROUND  
1 INCH. LOWS AROUND 30. SOUTH WINDS AROUND 15 MPH EARLY IN THE  
EVENING BECOMING SOUTHWEST AROUND 15 MPH EARLY IN THE MORNING.  
CHANCE OF PRECIPITATION 80 PERCENT.    
TUESDAY
 
BREEZY, COLDER. SNOW SHOWERS IN THE MORNING, THEN SNOW  
SHOWERS LIKELY, POSSIBLY MIXED WITH RAIN SHOWERS IN THE  
AFTERNOON. SNOW MAY BE HEAVY AT TIMES IN THE MORNING. SNOW  
ACCUMULATION OF 2 TO 7 INCHES. TOTAL SNOW ACCUMULATION 3 TO  
8 INCHES. HIGHS 34 TO 40. NORTHWEST WINDS 15 TO 20 MPH. CHANCE OF  
PRECIPITATION 90 PERCENT.    
TUESDAY NIGHT
 
BREEZY. MOSTLY CLOUDY. A 30 PERCENT CHANCE OF  
SNOW SHOWERS IN THE EVENING. LOWS 21 TO 27. NORTHWEST WINDS 15 TO  
20 MPH SHIFTING TO THE SOUTHWEST AFTER MIDNIGHT.    
WEDNESDAY
 
BREEZY. PARTLY CLOUDY. HIGHS 41 TO 47.    
WEDNESDAY NIGHT
 
PARTLY CLOUDY IN THE EVENING THEN BECOMING  
MOSTLY CLOUDY. LOWS 26 TO 32.    
THURSDAY
 
PARTLY CLOUDY IN THE MORNING THEN CLEARING. HIGHS  
47 TO 53.    
THURSDAY NIGHT
 
MOSTLY CLEAR. LOWS 26 TO 32.    
FRIDAY
 
BREEZY. MOSTLY SUNNY. HIGHS 49 TO 55.    
FRIDAY NIGHT
 
PARTLY CLOUDY. LOWS 29 TO 35.    
SATURDAY
 
BREEZY. MOSTLY CLOUDY IN THE MORNING THEN BECOMING  
PARTLY CLOUDY. HIGHS 48 TO 54.    
SATURDAY NIGHT
 
MOSTLY CLOUDY IN THE EVENING THEN BECOMING  
PARTLY CLOUDY. LOWS 29 TO 35.    
SUNDAY
 
BREEZY. PARTLY CLOUDY. CHANCE OF RAIN SHOWERS IN THE  
AFTERNOON. HIGHS 45 TO 51. CHANCE OF SHOWERS 30 PERCENT.  
 

 
 
WYZ024-181000-  
SALT RIVER AND WYOMING RANGES-  
1036 PM MDT SUN OCT 17 2021  
   
REST OF TONIGHT
 
PARTLY CLOUDY IN THE LATE EVENING AND EARLY  
MORNING THEN BECOMING MOSTLY CLOUDY. LOWS 31 TO 37. SOUTH WINDS  
AROUND 15 MPH AFTER MIDNIGHT.    
MONDAY
 
MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY LATE IN THE  
MORNING THEN BECOMING CLOUDY. CHANCE OF RAIN AND SNOW UNTIL LATE  
AFTERNOON, THEN RAIN, POSSIBLY MIXED WITH SNOW LATE IN THE  
AFTERNOON. LITTLE OR NO SNOW ACCUMULATION. HIGHS 42 TO 48. SOUTH  
WINDS AROUND 15 MPH IN THE AFTERNOON. CHANCE OF PRECIPITATION  
60 PERCENT.    
MONDAY NIGHT
 
COLDER. SNOW, POSSIBLY MIXED WITH RAIN IN THE  
EVENING, THEN SNOW AFTER MIDNIGHT. SNOW ACCUMULATION OF 2 TO  
4 INCHES. LOWS 22 TO 28. NORTHWEST WINDS AROUND 15 MPH EARLY IN  
THE MORNING. CHANCE OF PRECIPITATION 90 PERCENT.    
TUESDAY
 
MOSTLY CLOUDY WITH A 50 PERCENT CHANCE OF SNOW  
SHOWERS. SNOW ACCUMULATION UP TO 1 INCH. TOTAL SNOW ACCUMULATION  
2 TO 5 INCHES. HIGHS 33 TO 39. WEST WINDS AROUND 15 MPH.    
TUESDAY NIGHT
 
PARTLY CLOUDY. LOWS 21 TO 27. WEST WINDS AROUND  
15 MPH IN THE EVENING.    
WEDNESDAY
 
NOT AS COOL. PARTLY CLOUDY. HIGHS 39 TO 47.    
WEDNESDAY NIGHT
 
PARTLY CLOUDY. LOWS 23 TO 29.    
THURSDAY
 
PARTLY CLOUDY IN THE MORNING THEN CLEARING. HIGHS  
43 TO 51.    
THURSDAY NIGHT
 
MOSTLY CLEAR. LOWS 25 TO 31.    
FRIDAY
 
PARTLY CLOUDY. HIGHS 45 TO 53.    
FRIDAY NIGHT
 
PARTLY CLOUDY IN THE EVENING THEN BECOMING MOSTLY  
CLOUDY. A 30 PERCENT CHANCE OF RAIN SHOWERS, POSSIBLY MIXED WITH  
SNOW SHOWERS. LOWS 27 TO 33.    
SATURDAY
 
MOSTLY CLOUDY WITH A 30 PERCENT CHANCE OF SNOW  
SHOWERS, POSSIBLY MIXED WITH RAIN SHOWERS. HIGHS 38 TO 46.    
SATURDAY NIGHT
 
MOSTLY CLOUDY WITH A 40 PERCENT CHANCE OF SNOW  
SHOWERS, POSSIBLY MIXED WITH RAIN SHOWERS. LOWS 26 TO 32.    
SUNDAY
 
CLOUDY. CHANCE OF SNOW SHOWERS, POSSIBLY MIXED WITH  
RAIN SHOWERS IN THE MORNING, THEN RAIN SHOWERS AND SNOW SHOWERS  
LIKELY IN THE AFTERNOON. HIGHS 37 TO 45. CHANCE OF PRECIPITATION  
60 PERCENT.  
 

 
 
WYZ030-181000-  
EAST SWEETWATER COUNTY-  
INCLUDING THE CITY OF WAMSUTTER  
1036 PM MDT SUN OCT 17 2021  
   
REST OF TONIGHT
 
MOSTLY CLEAR IN THE LATE EVENING AND EARLY  
MORNING THEN BECOMING PARTLY CLOUDY. LOWS AROUND 38. SOUTH WINDS  
AROUND 15 MPH IN THE LATE EVENING AND EARLY MORNING.    
MONDAY
 
BREEZY. PARTLY CLOUDY THEN BECOMING MOSTLY SUNNY LATE  
IN THE MORNING THEN BECOMING PARTLY CLOUDY. HIGHS 53 TO 57. SOUTH  
WINDS 15 TO 25 MPH WITH GUSTS TO AROUND 40 MPH.    
MONDAY NIGHT
 
BREEZY. MOSTLY CLOUDY. CHANCE OF RAIN UNTIL EARLY  
MORNING. CHANCE OF SNOW LATE IN THE EVENING, THEN SNOW LIKELY  
AFTER MIDNIGHT. SNOW ACCUMULATION AROUND 1 INCH. LOWS AROUND 30.  
SOUTHWEST WINDS 15 TO 20 MPH. CHANCE OF PRECIPITATION 60 PERCENT.   
TUESDAY
 
COLDER, CLOUDY. SNOW SHOWERS IN THE MORNING, THEN SNOW  
SHOWERS LIKELY, POSSIBLY MIXED WITH RAIN SHOWERS IN THE  
AFTERNOON. SNOW ACCUMULATION AROUND 1 INCH. TOTAL SNOW  
ACCUMULATION AROUND 2 INCHES. HIGHS 39 TO 43. WEST WINDS AROUND  
15 MPH SHIFTING TO THE NORTHWEST IN THE AFTERNOON. CHANCE OF  
PRECIPITATION 80 PERCENT.    
TUESDAY NIGHT
 
MOSTLY CLOUDY IN THE EVENING THEN BECOMING  
PARTLY CLOUDY. LOWS AROUND 24. NORTHWEST WINDS AROUND 15 MPH IN  
THE EVENING.    
WEDNESDAY
 
PARTLY CLOUDY. HIGHS IN THE MID TO UPPER 40S.    
WEDNESDAY NIGHT
 
PARTLY CLOUDY IN THE EVENING THEN BECOMING  
MOSTLY CLOUDY. LOWS IN THE MID TO UPPER 20S.    
THURSDAY
 
PARTLY CLOUDY IN THE MORNING THEN CLEARING. HIGHS IN  
THE MID 50S.    
THURSDAY NIGHT
 
MOSTLY CLEAR. LOWS IN THE MID TO UPPER 20S.    
FRIDAY
 
MOSTLY SUNNY IN THE MORNING THEN BECOMING PARTLY  
CLOUDY. HIGHS IN THE MID 50S.    
FRIDAY NIGHT
 
PARTLY CLOUDY. LOWS NEAR 30.    
SATURDAY
 
PARTLY CLOUDY. HIGHS IN THE LOWER TO MID 50S.    
SATURDAY NIGHT
 
MOSTLY CLOUDY. LOWS NEAR 30.    
SUNDAY
 
BREEZY. MOSTLY CLOUDY. SLIGHT CHANCE OF RAIN SHOWERS  
AND SNOW SHOWERS IN THE MORNING, THEN CHANCE OF RAIN SHOWERS IN  
THE AFTERNOON. HIGHS NEAR 50. CHANCE OF PRECIPITATION 30 PERCENT.  
 

 
 
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