Don Day's Wyoming Weather Forecast: Sunday, December 21, 2025

Chance for rain and snow mainly in the west, otherwise mix of clouds and sun in Wyoming on Sunday. Breezy in some locations with gusts as high as 50 mph. Partly to mostly cloudy overnight with rain chances in some areas. Highs in the 40s and 50s and lows from the mid 20s to upper 40s.

CK
Coy Knobel

December 21, 20255 min read

Washakie County
"Just north of where the sun peeks over the Bighorn Mountains, the colors are beautiful."
"Just north of where the sun peeks over the Bighorn Mountains, the colors are beautiful." (Reader photo: Deb Coronado)

Chance for rain and snow mainly in the west, otherwise mix of clouds and sun in Wyoming on Sunday. Breezy in some locations with gusts as high as 50 mph. Partly to mostly cloudy overnight with rain chances in some areas. Highs in the 40s and 50s and lows from the mid 20s to the upper 40s.

Central:  

Casper:  Partly sunny and breezy today with a high near 55 and wind gusts as high as 33 mph. Partly cloudy and windy overnight with a low near 48 and wind gusts as high as 47 mph.  

Lander:  Chance of snow and rain, otherwise mostly sunny and breezy today with a high near 51 and wind gusts as high as 29 mph. Partly cloudy and windy overnight with a chance of rain, a low near 39 and wind gusts as high as 37 mph.

Glenrock:  Mostly cloudy and windy today with a high near 54 and wind gusts as high as 40 mph. Partly cloudy and windy overnight with a low near 49 and wind gusts as high as 45 mph. 

Southwest:  

Evanston Chance of rain, otherwise partly sunny and breezy today with a high near 47 and wind gusts as high as 37 mph. Mostly cloudy overnight with a chance of rain mainly before 11 p.m., a low near 37 and wind gusts as high as 36 mph.

Rock Springs:  Slight chance of rain mainly after 2 p.m., otherwise partly sunny today with a high near 53 and wind gusts as high as 22 mph. Mostly cloudy overnight with a low near 33. 

Cokeville:  Rain and snow near certain today with a high near 42 and wind gusts as high as 20 mph. Mostly cloudy overnight with a chance of rain, a low near 31 and wind gusts as high as 22 mph.

Western Wyoming:  

Pinedale:  Rain and snow near certain today with a high near 42 and wind gusts as high as 22 mph. Rain and snow likely overnight with a low near 30 and wind gusts as high as 28 mph.

Afton:  Snow and rain today with a high near 43 and wind gusts as high as 28 mph. Rain near certain overnight with a low near 33 and wind gusts as high as 25 mph. 

La Barge:  Snow and rain likely, breezy today with a high near 45 and wind gusts as high as 34 mph. Increasing clouds and breezy overnight with a chance of rain, a low near 33 and wind gusts as high as 32 mph.

Northwest: 

Dubois Rain and snow near certain, breezy today with a high near 45 and wind gusts as high as 33 mph. Rain and snow near certain, breezy overnight with a low near 37 and wind gusts as high as 37 mph. 

Jackson:  Rain and snow today with a high near 42 and wind gusts as high as 26 mph. Rain and snow, breezy overnight with a low near 35 and wind gusts as high as 36 mph.

Old Faithful in Yellowstone National Park:  Winter storm warning until Monday morning. Up to 5 inches of snow (heavy at times), and rain today with a high near 38 and wind gusts as high as 25 mph. Rain and snow overnight with a low near 32 and wind gusts as high as 31 mph.

Bighorn Basin:  

Thermopolis Slight chance of rain after 3 p.m., otherwise mostly sunny today with a high near 52 and partly cloudy overnight with a slight chance of rain and a low near 33.

Cody:  Chance of snow and rain, mostly cloudy today with a high near 46 and partly cloudy overnight with a chance of rain and a low near 37.

Worland:  Partly sunny today with a high near 49 and partly cloudy overnight with a low near 28.

North Central:  

Buffalo:  Partly sunny today with a high near 48 and partly cloudy and breezy overnight with a low near 37 and wind gusts as high as 26 mph. 

Sheridan:  Mostly cloudy today with a high near 40 and mostly cloudy overnight with a low near 26.

Story:  Mostly cloudy today with a high near 42 and mostly cloudy overnight with a low near 35. 

Northeast:  

Gillette:  Chance of rain after 11 a.m., mostly cloudy today with a high near 50 and wind gusts as high as 23 mph. Mostly cloudy and breezy overnight with a low near 43 and wind gusts as high as 32 mph.

Newcastle:  Chance of rain after 11 a.m., otherwise partly sunny today with a high near 48 and mostly cloudy overnight with a low near 38. 

Sundance:  Chance of rain after 11 a.m., mostly cloudy today with a high near 46 and wind gusts as high as 22 mph. Partly cloudy overnight with a low near 40 and wind gusts as high as 22 mph. 

Eastern Plains:  

Torrington:  Partly sunny today with a high near 57 and partly cloudy overnight with a low near 34. 

Wheatland:  Partly sunny today with a high near 58 and partly cloudy and breezy overnight with a low near 45 and wind gusts as high as 35 mph.

Guernsey:  Mostly cloudy today with a high near 57 and mostly cloudy overnight with a low near 40 and wind gusts as high as 25 mph.

Southeast:  

Cheyenne:  Partly sunny today with a high near 52 and partly cloudy overnight with a low near 37.

Laramie:  Partly sunny and breezy today with a high near 51 and wind gusts as high as 35 mph. Partly cloudy and windy overnight with a low near 44 and wind gusts as high as 45 mph.

Pine Bluffs:  Mostly sunny today with a high near 54 and partly cloudy overnight with a low near 33.

South Central:  

Rawlins:  Mostly sunny and windy today with a high near 49 and wind gusts as high as 50 mph. Partly cloudy and windy overnight with a low near 41 and wind gusts as high as 50 mph.

Saratoga:  Mostly sunny and windy today with a high near 51 and wind gusts as high as 40 mph. Partly cloudy and breezy overnight with a low near 40 and wind gusts as high as 40 mph.

Baggs: Slight chance of rain after 11 a.m., otherwise partly sunny and breezy today with a high near 54 and wind gusts as high as 35 mph. Mostly cloudy and breezy overnight with a low near 34 and wind gusts as high as 35 mph.

Authors

CK

Coy Knobel

Night Editor