National Weather Service Forecast for: Casper WY
Issued by: National Weather Service Riverton, WY
Updated: 9:01 pm MST Dec 19, 2025
 
Tonight

Tonight: Rain and snow showers, becoming all snow after 1am, then gradually ending.  Low around 25. Windy, with a west southwest wind 24 to 34 mph becoming north northeast 7 to 12 mph. Winds could gust as high as 50 mph.  Chance of precipitation is 80%. Total nighttime snow accumulation of less than a half inch possible.
Windy.
Scattered
Rain/Snow
then
Rain/Snow
Saturday

Saturday: Sunny, with a high near 41. Breezy, with a light and variable wind becoming west 10 to 15 mph in the morning. Winds could gust as high as 23 mph.
Mostly Sunny
then Sunny
and Breezy

Saturday
Night
Saturday Night: Increasing clouds, with a low around 30. Southwest wind 8 to 10 mph.
Increasing
Clouds

Sunday

Sunday: Mostly cloudy, with a high near 53. Breezy, with a south southwest wind 9 to 18 mph, with gusts as high as 28 mph.
Mostly Cloudy
then Mostly
Cloudy and
Breezy
Sunday
Night
Sunday Night: Mostly cloudy, with a low around 46. Windy, with a southwest wind 21 to 28 mph, with gusts as high as 44 mph.
Mostly Cloudy
and Windy

Monday

Monday: Partly sunny, with a high near 58. Windy, with a southwest wind 23 to 32 mph, with gusts as high as 49 mph.
Partly Sunny
and Windy

Monday
Night
Monday Night: Mostly cloudy, with a low around 41. Breezy, with a southwest wind around 18 mph, with gusts as high as 28 mph.
Mostly Cloudy
and Breezy

Tuesday

Tuesday: Partly sunny, with a high near 60. Breezy.
Partly Sunny
and Breezy

Tuesday
Night
Tuesday Night: Partly cloudy, with a low around 45. Breezy.
Partly Cloudy
and Breezy

Lo 25 °F Hi 41 °F Lo 30 °F Hi 53 °F Lo 46 °F Hi 58 °F Lo 41 °F Hi 60 °F Lo 45 °F

Hazardous Weather Outlook
High Wind Warning
 

Tonight
 
Rain and snow showers, becoming all snow after 1am, then gradually ending. Low around 25. Windy, with a west southwest wind 24 to 34 mph becoming north northeast 7 to 12 mph. Winds could gust as high as 50 mph. Chance of precipitation is 80%. Total nighttime snow accumulation of less than a half inch possible.
Saturday
 
Sunny, with a high near 41. Breezy, with a light and variable wind becoming west 10 to 15 mph in the morning. Winds could gust as high as 23 mph.
Saturday Night
 
Increasing clouds, with a low around 30. Southwest wind 8 to 10 mph.
Sunday
 
Mostly cloudy, with a high near 53. Breezy, with a south southwest wind 9 to 18 mph, with gusts as high as 28 mph.
Sunday Night
 
Mostly cloudy, with a low around 46. Windy, with a southwest wind 21 to 28 mph, with gusts as high as 44 mph.
Monday
 
Partly sunny, with a high near 58. Windy, with a southwest wind 23 to 32 mph, with gusts as high as 49 mph.
Monday Night
 
Mostly cloudy, with a low around 41. Breezy, with a southwest wind around 18 mph, with gusts as high as 28 mph.
Tuesday
 
Partly sunny, with a high near 60. Breezy.
Tuesday Night
 
Partly cloudy, with a low around 45. Breezy.
Wednesday
 
Mostly sunny, with a high near 61. Windy.
Wednesday Night
 
A slight chance of showers. Mostly cloudy, with a low around 41. Windy.
Christmas Day
 
Mostly sunny, with a high near 55. Windy.
Thursday Night
 
A slight chance of rain and snow showers. Partly cloudy, with a low around 40. Breezy.
Friday
 
Mostly cloudy, with a high near 53. Breezy.

 

Forecast from NOAA-NWS for Casper WY.