Don Day's Wyoming Weather Forecast: Sunday, August 23, 2026

Mostly sunny to sunny in Wyoming on Sunday with a chance of rain, breezy in some areas. Chance of rain in some locations overnight. Highs from the low 70s to mid 90s. Lows from the mid 40s to low 60s.

CK
Coy Knobel

August 23, 20266 min read

Cheyenne
"Sunset looking west in Cheyenne."
"Sunset looking west in Cheyenne." (Barbara)

Mostly sunny to sunny in Wyoming on Sunday with a chance of rain, breezy in some areas. Chance of rain in some locations overnight. Highs from the low 70s to mid 90s. Lows from the mid 40s to low 60s.

 

Central:  

Casper:  Mostly sunny and breezy today with a high near 92 and wind gusts as high as 24 mph. Gradually becoming mostly clear overnight with a slight chance of rain before 10 p.m., a low near 62 and wind gusts as high as 24 mph.

 

Riverton:  Slight chance of rain after 3 p.m., otherwise mostly sunny today with a high near 90 and wind gusts as high as 20 mph. Partly cloudy overnight with a low near 58 and wind gusts as high as 22 mph.

 

Shoshoni:   Sunny today with a high near 91 and wind gusts as high as 20 mph. Partly cloudy overnight with a low near 61 and wind gusts as high as 22 mph.

 

Southwest:  

Evanston  Chance of rain mainly after noon, otherwise mostly sunny today with a high near 83 and partly cloudy overnight with a slight chance of rain before midnight and a low near 53.

 

Green River:   Chance of rain mainly after 2 p.m., otherwise mostly sunny today with a high near 85 and wind gusts as high as 20 mph. Partly cloudy overnight with a slight chance of rain before 8 p.m., a low near 56 and wind gusts as high as 21 mph.

 

Kemmerer:   Slight chance of rain after 2 p.m., otherwise mostly sunny and breezy today with a high near 80 and wind gusts as high as 23 mph. Increasing clouds overnight with a low near 52 and wind gusts as high as 22 mph.

 

Western Wyoming:  

Pinedale:   Chance of rain mainly after 5 p.m., otherwise mostly sunny today with a high near 75 and mostly cloudy overnight with a slight chance of rain before 8 p.m., a low near 48 and wind gusts as high as 21 mph.

 

Alpine Chance of rain mainly after 5 p.m., otherwise mostly sunny today with a high near 81 and mostly cloudy overnight with a chance of rain mainly before midnight and a low near 49.

 

Big Piney:  Chance of rain, otherwise mostly sunny today with a high near 77 and partly cloudy overnight with a slight chance of rain before 8 p.m., a low near 46 and wind gusts as high as 20 mph.

 

Northwest: 

Dubois Chance of rain mainly after 5 p.m., otherwise mostly sunny and breezy today with a high near 73 and wind gusts as high as 25 mph. Mostly cloudy and breezy overnight with a slight chance of rain before 7 p.m., a low near 49 and wind gusts as high as 28 mph.

 

Jackson:  Chance of rain mainly after 3 p.m., otherwise mostly sunny today with a high near 79 and mostly cloudy overnight with a chance of rain mainly before 7 p.m. and a low near 47.

 

Old Faithful in Yellowstone National Park:  Slight chance of rain, otherwise mostly sunny today with a high near 73 and partly cloudy overnight with a slight chance of rain before 8 p.m., a low near 41 and wind gusts as high as 23 mph.

 

Bighorn Basin:  

Thermopolis:  Slight chance of rain mainly after 3 p.m., otherwise mostly sunny today with a high near 89 and partly cloudy overnight with a slight chance of rain before 7 p.m. and a low near 62.

 

Cody:  Slight chance of rain after 2 p.m., otherwise mostly sunny and breezy today with a high near 88 and wind gusts as high as 21 mph. Partly cloudy overnight with a low near 59 and wind gusts as high as 23 mph.

 

Greybull:  Slight chance of rain after 2 p.m., otherwise mostly sunny today with a high near 91 and partly cloudy overnight with a slight chance of rain before 7 p.m. and a low near 59.

 

North Central:  

Buffalo:   Chance of rain mainly after 2 p.m., otherwise mostly sunny today with a high near 85 and partly cloudy overnight with a slight chance of rain mainly before 9 p.m. and a low near 63.

 

Sheridan:   Chance of rain mainly after 3 p.m., otherwise mostly sunny and hot today with a high near 94 and mostly cloudy overnight with a chance of rain before midnight and a low near 57.

 

Story:   Chance of rain mainly after noon, otherwise mostly sunny today with a high near 88 and mostly cloudy overnight with a slight chance of rain before 9 p.m. and a low near 59.

 

Northeast:  

Gillette:  Sunny today with a high near 91 and wind gusts as high as 23 mph. Partly cloudy overnight with a chance of rain before midnight, a low near 61 and wind gusts as high as 21 mph.

 

Newcastle:   Mostly sunny today with a high near 92 and wind gusts as high as 18 mph. Partly cloudy overnight with a slight chance of rain before midnight, a low near 63 and wind gusts as high as 18 mph.

 

Upton:  Mostly sunny today with a high near 95 and wind gusts as high as 20 mph. Partly cloudy overnight with a chance of rain before midnight, a low near 59 and wind gusts as high as 20 mph.

 

Eastern Plains:  

Torrington:  Sunny and hot today with a high near 96 and partly cloudy overnight with a slight chance of rain before midnight and a low near 61.

 

Lusk:   Sunny and hot today with a high near 92 and partly cloudy overnight with a chance of rain before midnight and a low near 59.

 

Midwest:  Sunny and breezy today with a high near 91 and wind gusts as high as 23 mph. Partly cloudy overnight with a chance of rain before 10 p.m., a low near 61 and wind gusts as high as 21 mph.

 

Southeast:  

Cheyenne:   Chance of rain after noon, otherwise mostly sunny today with a high near 89 and partly cloudy overnight with a slight chance of rain before 9 p.m. and a low near 60.

 

Laramie:  Slight chance of rain after 3 p.m., otherwise mostly sunny and breezy today with a high near 84 and wind gusts as high as 30 mph. Partly cloudy and breezy overnight with a low near 55 and wind gusts as high as 30 mph.

 

Medicine Bow:  Sunny and breezy today with a high near 88 and wind gusts as high as 40 mph. Partly cloudy and breezy overnight with a low near 53 and wind gusts as high as 35 mph.

 

South Central:  

Rawlins:   Mostly sunny and breezy today with a high near 85 and wind gusts as high as 40 mph. Partly cloudy and breezy overnight with a slight chance of rain before 9 p.m., a low near 58 and wind gusts as high as 40 mph.

 

Saratoga:   Chance of rain mainly after 3 p.m., otherwise mostly sunny and breezy today with a high near 85 and wind gusts as high as 30 mph. Partly cloudy and breezy overnight with a low near 52 and wind gusts as high as 30 mph.

 

Hanna:   Mostly sunny and windy today with a high near 85 and wind gusts as high as 45 mph. Partly cloudy and windy overnight with a low near 55 and wind gusts as high as 45 mph.

Authors

CK

Coy Knobel

Night Editor