Don Day's Wyoming Weather Forecast: Saturday, September 20, 2025

Mostly sunny in much of Wyoming on Saturday with clouds and a chance for rain in a few areas. Highs from near 70 to the low 80s and lows from the low 40s to the mid 50s.

CK
Coy Knobel

September 20, 20254 min read

"Sunrise over the Bighorns.
"Sunrise over the Bighorns. (Reader photo: Steven Mohns in Big Horn, Wyoming.)

Mostly sunny in much of Wyoming on Saturday with clouds and a chance for rain in a few areas. Highs from near 70 to the low 80s and lows from the low 40s to the mid 50s.

Central:  

Casper:  Mostly sunny today with a high near 80 and partly cloudy overnight with a low near 52.

Lander:  Mostly sunny today with a high near 78 and partly cloudy overnight with a low near 51.

Shoshoni:  Mostly sunny today with a high near 83 and partly cloudy overnight with a low near 50.

Southwest:  

Evanston Chance of rain after noon, mostly cloudy today with a high near 70 and mostly cloudy overnight with a chance of rain and a low near 45.

Rock Springs:  Slight chance of rain after 4 p.m., otherwise mostly sunny and breezy today with a high near 74 and wind gusts as high as 21 mph. Mostly cloudy overnight with a slight chance of rain before 9 p.m. and a low near 47.

Cokeville:  Chance of rain mainly after 3 p.m., otherwise partly sunny today with a high near 70 and mostly cloudy overnight with a slight chance of rain and a low near 39.

Western Wyoming:  

Pinedale:  Slight chance of rain after 4 p.m., otherwise mostly sunny today with a high near 71 and mostly cloudy overnight with a low near 40.

Afton:  Chance of rain after 3 p.m., otherwise mostly sunny today with a high near 73 and mostly cloudy overnight with a chance of rain mainly after midnight and a low near 43.

La Barge:  Chance of rain, otherwise partly sunny and breezy today with a high near 72 and wind gusts as high as 21 mph. Mostly cloudy overnight with a slight chance of rain and a low near 44.

Northwest: 

Dubois Mostly sunny today with a high near 71 and partly cloudy overnight with a low near 44 and wind gusts as high as 20 mph.

Jackson:  Mostly sunny and breezy today with a high near 75 and wind gusts as high as 21 mph. Partly cloudy overnight with a slight chance of rain after midnight and a low near 42.

Old Faithful in Yellowstone National Park:  Sunny today with a high near 70 and mostly clear overnight with a low near 35.

Bighorn Basin:  

Thermopolis Mostly sunny today with a high near 83 and partly cloudy overnight with a low near 50.

Cody:  Mostly sunny today with a high near 79 and mostly clear overnight with a low near 54.

Powell:  Sunny today with a high near 81 and mostly clear overnight with a low near 50.

North Central:  

Buffalo:  Mostly sunny today with a high near 76 and mostly clear overnight with a low near 55.

Sheridan:  Mostly sunny today with a high near 81 and mostly clear overnight with a low near 47.

Dayton:  Mostly sunny today with a high near 79 and mostly clear overnight with a low near 50.

Northeast:  

Gillette:  Mostly sunny today with a high near 78 and mostly clear overnight with a low near 49.

Newcastle:  Mostly sunny today with a high near 76 and mostly clear overnight with a low near 50.

Sundance:  Mostly sunny today with a high near 72 and mostly clear overnight with a low near 51.

Eastern Plains:  

Torrington:  Mostly sunny today with a high near 82 and gradually becoming mostly clear overnight with a low near 50.

Wheatland:  Partly sunny today with a high near 80 and partly cloudy overnight with a low near 55.

Guernsey:  Partly sunny today with a high near 81 and partly cloudy overnight with a low near 53.

Southeast:  

Cheyenne:  Partly sunny today with a high near 76 and mostly cloudy overnight with a low near 52.

Laramie:  Slight chance of rain after 3 p.m., increasing clouds today with a high near 71 and gradually becoming partly cloudy overnight with a low near 45.

Chugwater:  Mostly sunny today with a high near 78 and partly cloudy overnight with a low near 53.

South Central:  

Rawlins:  Partly sunny today with a high near 73 and mostly cloudy overnight with a low near 48.

Saratoga:  Partly sunny today with a high near 73 and mostly cloudy overnight with a low near 45.

Wamsutter:  Mostly sunny today with a high near 73 and mostly cloudy overnight with a slight chance of rain before midnight and a low near 45.

Authors

CK

Coy Knobel

Night Editor