National Weather Service Forecast for: Casper WY
Issued by: National Weather Service Riverton, WY
Updated: 5:17 pm MST Dec 17, 2025
 
Tonight

Tonight: Partly cloudy, with a low around 24. Very windy, with a west wind 28 to 38 mph, with gusts as high as 55 mph.
Partly Cloudy
and Very
Windy
 Thursday

Thursday: Mostly sunny, with a high near 42. Breezy, with a southwest wind 18 to 22 mph, with gusts as high as 33 mph.
Mostly Sunny
and Breezy
 Thursday
Night
Thursday Night: Mostly cloudy, with a low around 36. Very windy, with a southwest wind 30 to 38 mph, with gusts as high as 55 mph.
Mostly Cloudy
and Very
Windy
 Friday

Friday: Mostly sunny, with a high near 58. Very windy, with a west southwest wind 34 to 38 mph, with gusts as high as 55 mph.
Mostly Sunny
and Very
Windy
 Friday
Night
Friday Night: A slight chance of rain showers before 11pm, then a chance of rain and snow showers between 11pm and 2am, then a chance of snow showers after 2am. Mostly cloudy, with a low around 27. Very windy, with a west southwest wind 32 to 37 mph decreasing to 18 to 23 mph after midnight. Winds could gust as high as 49 mph. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.
Chance
Rain/Snow and
Very Windy
 Saturday

Saturday: A 30 percent chance of snow showers, mainly before 11am. Mostly sunny, with a high near 42. Breezy, with a west wind 13 to 16 mph, with gusts as high as 24 mph.
Chance Snow
Showers and
Breezy
 Saturday
Night
Saturday Night: Mostly cloudy, with a low around 29. Southwest wind 11 to 13 mph, with gusts as high as 21 mph.
Mostly Cloudy

 Sunday

Sunday: Mostly cloudy, with a high near 52. Breezy.
Mostly Cloudy
and Breezy
 Sunday
Night
Sunday Night: Mostly cloudy, with a low around 43. Breezy.
Mostly Cloudy
and Breezy
Lo 24 °F Hi 42 °F Lo 36 °F Hi 58 °F Lo 27 °F Hi 42 °F Lo 29 °F Hi 52 °F Lo 43 °F

Hazardous Weather Outlook
High Wind Warning
 

Tonight
 
 Partly cloudy, with a low around 24. Very windy, with a west wind 28 to 38 mph, with gusts as high as 55 mph.
Thursday
 
 Mostly sunny, with a high near 42. Breezy, with a southwest wind 18 to 22 mph, with gusts as high as 33 mph.
Thursday Night
 
 Mostly cloudy, with a low around 36. Very windy, with a southwest wind 30 to 38 mph, with gusts as high as 55 mph.
Friday
 
 Mostly sunny, with a high near 58. Very windy, with a west southwest wind 34 to 38 mph, with gusts as high as 55 mph.
Friday Night
 
 A slight chance of rain showers before 11pm, then a chance of rain and snow showers between 11pm and 2am, then a chance of snow showers after 2am. Mostly cloudy, with a low around 27. Very windy, with a west southwest wind 32 to 37 mph decreasing to 18 to 23 mph after midnight. Winds could gust as high as 49 mph. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.
Saturday
 
 A 30 percent chance of snow showers, mainly before 11am. Mostly sunny, with a high near 42. Breezy, with a west wind 13 to 16 mph, with gusts as high as 24 mph.
Saturday Night
 
 Mostly cloudy, with a low around 29. Southwest wind 11 to 13 mph, with gusts as high as 21 mph.
Sunday
 
 Mostly cloudy, with a high near 52. Breezy.
Sunday Night
 
 Mostly cloudy, with a low around 43. Breezy.
Monday
 
 Mostly sunny, with a high near 58. Windy.
Monday Night
 
 Mostly cloudy, with a low around 37. Breezy.
Tuesday
 
 Partly sunny, with a high near 58. Breezy.
Tuesday Night
 
 Partly cloudy, with a low around 42. Breezy.
Wednesday
 
 Mostly sunny, with a high near 59. Breezy.

 

Forecast from NOAA-NWS for Casper WY.