National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Atmospheric River Bringing Heavy Rain to Southern California and Heavy Snow to the Sierra Nevadas

A strong atmospheric river will continue heavy rain over southern California through Friday. The heaviest rainfall is ongoing today in the Los Angeles Basin. Flash and urban flooding is possible. A prolonged heavy snowfall has begun over the Sierra Nevada Mountains and will continue through Friday. Travel will become increasingly difficult over the passes due to snow and strong winds. Read More >

Hazardous Weather Conditions

Current conditions at

Casper, Natrona County International Airport (KCPR)

Lat: 42.8975°NLon: 106.47306°WElev: 5348.0ft.

Clear

58°F

14°C

Humidity 42%
Wind Speed SSW 32 MPH
Barometer 29.92 in (1013.21 mb)
Dewpoint 35°F (2°C)
Visibility 10.00 mi
Last update 24 Dec 09:53 PM MST
Extended Forecast for

Casper WY

High Wind Warning until December 25, 11:00am
Click here for hazard details and duration
High Wind Warning
  •  
    High Wind Warning until December 25, 11:00am

    NOW until 11:00am Thu

    High Wind Warning

  • Tonight

    Low: 51 °F

    Partly Cloudy
    and Very
    Windy

  • Christmas Day

    Christmas Day: Isolated showers between noon and 2pm. Mostly sunny, with a temperature falling to around 51 by 5pm. Very windy, with a west southwest wind 33 to 38 mph decreasing to 24 to 29 mph in the afternoon. Winds could gust as high as 55 mph. Chance of precipitation is 20%.

    High: 58 °F⇓

    Mostly Sunny
    and Very
    Windy then
    Isolated
    Showers and
    Windy

  • Thursday Night

    Thursday Night: Isolated showers before 8pm. Partly cloudy, with a low around 44. Breezy, with a southwest wind 21 to 24 mph, with gusts as high as 33 mph. Chance of precipitation is 20%.

    Low: 44 °F

    Breezy.
    Isolated
    Showers then
    Mostly Clear

  • Friday

    Friday: Partly sunny, with a high near 52. Windy, with a southwest wind 26 to 32 mph, with gusts as high as 45 mph.

    High: 52 °F

    Partly Sunny
    and Windy

  • Friday Night

    Friday Night: A chance of rain showers before 11pm, then a slight chance of rain and snow showers. Mostly cloudy, with a low around 36. Windy, with a southwest wind 25 to 28 mph, with gusts as high as 39 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.

    Low: 36 °F

    Chance
    Rain/Snow and
    Windy

  • Saturday

    Saturday: Mostly sunny, with a high near 45. Windy, with a southwest wind 20 to 26 mph becoming northwest in the afternoon. Winds could gust as high as 38 mph.

    High: 45 °F

    Mostly Sunny
    and Windy

  • Saturday Night

    Saturday Night: A 40 percent chance of snow showers. Mostly cloudy, with a low around 14. Blustery, with a north wind 10 to 17 mph, with gusts as high as 24 mph.

    Low: 14 °F

    Chance Snow
    Showers and
    Blustery

  • Sunday

    Sunday: Sunny, with a high near 31.

    High: 31 °F

    Sunny

Detailed Forecast

Tonight
Partly cloudy, with a low around 51. Very windy, with a south southwest wind 30 to 36 mph, with gusts as high as 49 mph.
Christmas Day
Isolated showers between noon and 2pm. Mostly sunny, with a temperature falling to around 51 by 5pm. Very windy, with a west southwest wind 33 to 38 mph decreasing to 24 to 29 mph in the afternoon. Winds could gust as high as 55 mph. Chance of precipitation is 20%.
Thursday Night
Isolated showers before 8pm. Partly cloudy, with a low around 44. Breezy, with a southwest wind 21 to 24 mph, with gusts as high as 33 mph. Chance of precipitation is 20%.
Friday
Partly sunny, with a high near 52. Windy, with a southwest wind 26 to 32 mph, with gusts as high as 45 mph.
Friday Night
A chance of rain showers before 11pm, then a slight chance of rain and snow showers. Mostly cloudy, with a low around 36. Windy, with a southwest wind 25 to 28 mph, with gusts as high as 39 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.
Saturday
Mostly sunny, with a high near 45. Windy, with a southwest wind 20 to 26 mph becoming northwest in the afternoon. Winds could gust as high as 38 mph.
Saturday Night
A 40 percent chance of snow showers. Mostly cloudy, with a low around 14. Blustery, with a north wind 10 to 17 mph, with gusts as high as 24 mph.
Sunday
Sunny, with a high near 31.
Sunday Night
Mostly clear, with a low around 16.
Monday
Sunny, with a high near 39. Breezy.
Monday Night
Partly cloudy, with a low around 23. Breezy.
Tuesday
Mostly sunny, with a high near 46. Breezy.
Tuesday Night
Partly cloudy, with a low around 28.
Wednesday
Sunny, with a high near 49.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Casper WY
 42.83°N 106.34°W (Elev. 5236 ft)
Last Update:
9:17 pm MST Dec 24, 2025
Forecast Valid:
10pm MST Dec 24, 2025-6pm MST Dec 31, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation