Don Day's Wyoming Weather Forecast: Sunday, May 18, 2025

Chance of rain in Wyoming on Sunday and rain and snow possible overnight. Breezy with wind gusts in some areas as high as 50 mph. Highs from near 40 to the low 70s. Lows from the mid 20s to near 40. 

CK
Coy Knobel

May 18, 20256 min read

Beautiful spring morning sunrise from Story, Wyoming.
Beautiful spring morning sunrise from Story, Wyoming. (Reader photo: Mark Kinner)

Chance of rain in Wyoming on Sunday and rain and snow possible overnight. Breezy with wind gusts in some areas as high as 50 mph. Highs from near 40 to the low 70s. Lows from the mid 20s to near 40. 

 

Central:  

Casper:  Chance of rain, mostly cloudy and breezy today with a high near 67 and wind gusts as high as 22 mph. Rain likely overnight with a low near 39 and wind gusts as high as 21 mph.

 

Riverton:  Chance of rain, mostly cloudy and breezy today with a high near 67 and wind gusts as high as 31 mph. Mostly cloudy overnight with rain likely, a low near 40 and wind gusts as high as 25 mph.

 

Jeffrey City:  Chance of rain after 4 p.m., otherwise partly sunny and breezy today with a high near 62 and wind gusts as high as 34 mph. Mostly cloudy and breezy overnight with a chance of rain and snow, a low near 35 and wind gusts as high as 26 mph.

 

Southwest:  

Evanston Rain and snow near certain today with a high near 40 and afternoon wind from 15-20 mph. Mostly cloudy overnight with a chance of rain and snow before midnight, a low near 25 and wind from 15-20 mph.

 

Green River:  Rain likely, mostly cloudy and breezy today with a high near 54 and wind gusts as high as 37 mph. Mostly cloudy and breezy overnight with a slight chance of rain before 9 p.m., a low near 32 and wind gusts as high as 37 mph.

 

South Pass:  Chance of rain, mostly cloudy and breezy today with a high near 52 and wind gusts as high as 36 mph. Mostly cloudy and windy overnight with a chance for rain and snow, a low near 30 and wind gusts as high as 39 mph.

 

Western Wyoming:  

Pinedale:  Breezy, rain likely today with a high near 48 and wind gusts as high as 30 mph. Mostly cloudy and blustery overnight with a slight chance of rain and snow, a low near 28 and wind gusts as high as 31 mph.

 

Alpine:  Rain near certain today with a high near 47 and mostly cloudy overnight with a chance of rain and snow and a low near 31.

 

Big Piney:  Rain likely, cloudy and breezy today with a high near 50 and wind gusts as high as 32 mph. Mostly cloudy and blustery overnight with a low near 26 and wind gusts as high as 31 mph.

 

Northwest: 7

Dubois Breezy, rain likely today with a high near 49 and wind gusts as high as 31 mph. Mostly cloudy and breezy overnight with a chance of rain and snow, a low near 32 and wind gusts as high as 32 mph.

 

Jackson:  Rain likely today with a high near 47 and mostly cloudy overnight with a chance of rain and snow and a low near 30.

 

Old Faithful in Yellowstone National Park:  Rain likely today with a high near 44 and mostly cloudy overnight with rain and snow likely and a low near 25.

 

Bighorn Basin:  

Thermopolis Chance of rain, mostly cloudy and breezy today with a high near 68 and wind gusts as high as 25 mph. Breezy, rain likely overnight with a low near 40 and wind gusts as high as 22 mph.

 

Cody:  Rain likely, mostly cloudy today with a high near 61 and wind gusts as high as 20 mph. Cloudy and breezy overnight with a chance for rain, a low near 40 and wind gusts as high as 24 mph.

 

Powell:  Rain likely, mostly cloudy and breezy today with a high near 64 and wind gusts as high as 30 mph. Cloudy and breezy overnight with a chance for rain mainly after midnight, a low near 41 and wind gusts as high as 37 mph.

 

North Central:  

Buffalo:  Chance of rain, mostly cloudy and breezy today with a high near 66 and wind gusts as high as 29 mph. Breezy, rain likely overnight with a low near 40 and wind gusts as high as 33 mph.

 

Sheridan:  Flood watch from noon today until 6 p.m. tomorrow night. Rain likely today with a high near 70 and rain overnight with a low near 38 and wind from 11-18 mph.

 

Clearmont:  Flood watch from noon today until 6 p.m. tomorrow night. Rain likely, mostly cloudy today with a high near 73 and wind from 11-18 mph. Rain overnight with a low near 39 and wind from 14-17 mph.

 

Northeast:  

Gillette:  Rain likely, cloudy and breezy today with a high near 66 and wind gusts as high as 41 mph. Breezy, rain overnight with a low near 39 and wind gusts as high as 37 mph.

 

Newcastle:  Chance of rain, mostly cloudy and breezy today with a high near 60 and wind gusts as high as 34 mph. Breezy, rain overnight with a low near 40 and wind gusts as high as 33 mph.

 

Upton:  Chance of rain, mostly cloudy and breezy today with a high near 63 and wind gusts as high as 40 mph. Breezy, rain overnight with a low near 39 and wind gusts as high as 31 mph.

 

Eastern Plains:  

Torrington:  Rain likely mainly after 3 p.m. today with a high near 62 and wind gusts as high as 25 mph. Cloudy and breezy overnight with rain likely, a low near 41 and wind gusts as high as 30 mph.

 

Lusk:  Rain likely mainly after 3 p.m., mostly cloudy and breezy today with a high near 59 and wind gusts as high as 35 mph. Breezy overnight with rain likely, a low near 36 and wind gusts as high as 30 mph.

 

Kaycee:  Chance of rain, mostly cloudy and breezy today with a high near 68 and wind gusts as high as 22 mph. Breezy overnight with rain likely, a low near 39 and wind gusts as high as 22 mph.

 

Southeast:  

Cheyenne:  Rain likely mainly after 3 p.m., mostly cloudy today with a high near 62 and mostly cloudy and windy overnight with a chance of rain, a low near 38 and wind gusts as high as 45 mph.

 

Laramie:  Chance of rain after noon, mostly cloudy today with a high near 58 and mostly cloudy and breezy overnight with a chance of rain and snow, a low near 34 and wind gusts as high as 35 mph.

 

Chugwater:  Rain likely after noon, mostly cloudy and breezy today with a high near 62 and wind gusts as high as 30 mph. Mostly cloudy and windy overnight with a chance of rain, a low near 38 and wind gusts as high as 50 mph.

 

South Central:  

Rawlins:  Chance of rain after noon, mostly cloudy and breezy today with a high near 60 and wind gusts as high as 40 mph. Mostly cloudy and windy overnight with a chance of rain and snow, a low near 34 and wind gusts as high as 40 mph.

 

Encampment:  Chance of rain mainly after 3 p.m., mostly cloudy today with a high near 58 and mostly cloudy and breezy overnight with a chance of rain and snow, a low near 31 and wind gusts as high as 30 mph.

 

Hanna:  Chance of rain after noon, mostly cloudy and breezy today with a high near 61 and wind gusts as high as 30 mph. Mostly cloudy and breezy overnight with rain and snow likely, a low near 32 and wind gusts as high as 40 mph.

Authors

CK

Coy Knobel

Night Editor