Strong Atmospheric River Bringing Heavy Rain to the Pacific Northwest; Areas of Snow in the North-Central and Eastern U.S.

A strong atmospheric river will bring prolonged heavy rainfall along with gusty winds to the Pacific Northwest through much of this week. The heavy rainfall may lead to widespread urban and river flooding. Accumulating snow is expected over parts of the central Appalachians and Mid-Atlantic today as well as the Upper Midwest and the Upper Great Lakes this evening into Tuesday. Read More >

Current conditions at

Casper, Natrona County International Airport (KCPR)

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

Mostly Cloudy

44°F

7°C

Humidity 41%
Wind Speed WSW 20 MPH
Barometer 30.01 in (1016.26 mb)
Dewpoint 22°F (-6°C)
Visibility 10.00 mi
Wind Chill36°F (2°C)
Last update 08 Dec 03:53 PM MST
Extended Forecast for

Casper WY

High Wind Warning December 8, 11:00pm until December 11, 05:00am
Click here for hazard details and duration
High Wind Warning
  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 46. Breezy, with a west southwest wind around 17 mph, with gusts as high as 28 mph.

    High: 46 °F

    Mostly Sunny
    and Breezy

  • Tonight

    Tonight: Mostly cloudy, with a low around 37. Windy, with a southwest wind 21 to 26 mph increasing to 28 to 33 mph after midnight. Winds could gust as high as 50 mph.

    Low: 37 °F

    Mostly Cloudy
    and Windy

  • Tuesday

    Tuesday: Partly sunny, with a high near 52. Very windy, with a southwest wind 34 to 39 mph decreasing to 21 to 26 mph in the afternoon. Winds could gust as high as 60 mph.

    High: 52 °F

    Partly Sunny
    and Very
    Windy

  • Tuesday Night

    Tuesday Night: A chance of rain and snow showers before 11pm, then a slight chance of snow showers between 11pm and 2am, then a slight chance of rain and snow showers after 2am.  Mostly cloudy, with a low around 29. Breezy, with a west wind 6 to 16 mph becoming south southwest after midnight. Winds could gust as high as 24 mph.  Chance of precipitation is 40%. Little or no snow accumulation expected.

    Low: 29 °F

    Chance
    Rain/Snow and
    Breezy

  • Wednesday

    Wednesday: Partly sunny, with a high near 55. Breezy, with a west southwest wind 14 to 22 mph, with gusts as high as 33 mph.

    High: 55 °F

    Partly Sunny
    and Breezy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 41. Windy, with a southwest wind 23 to 25 mph, with gusts as high as 38 mph.

    Low: 41 °F

    Mostly Cloudy
    and Windy

  • Thursday

    Thursday: A 20 percent chance of showers.  Partly sunny, with a high near 54. Breezy, with a west southwest wind 17 to 21 mph, with gusts as high as 32 mph.

    High: 54 °F

    Slight Chance
    Showers and
    Breezy

  • Thursday Night

    Thursday Night: A chance of rain and snow showers before 11pm, then a chance of snow showers.  Mostly cloudy, with a low around 23. Chance of precipitation is 30%.

    Low: 23 °F

    Chance
    Rain/Snow
    then Chance
    Snow Showers

  • Friday

    Friday: Partly sunny, with a high near 47.

    High: 47 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 46. Breezy, with a west southwest wind around 17 mph, with gusts as high as 28 mph.
Tonight
Mostly cloudy, with a low around 37. Windy, with a southwest wind 21 to 26 mph increasing to 28 to 33 mph after midnight. Winds could gust as high as 50 mph.
Tuesday
Partly sunny, with a high near 52. Very windy, with a southwest wind 34 to 39 mph decreasing to 21 to 26 mph in the afternoon. Winds could gust as high as 60 mph.
Tuesday Night
A chance of rain and snow showers before 11pm, then a slight chance of snow showers between 11pm and 2am, then a slight chance of rain and snow showers after 2am. Mostly cloudy, with a low around 29. Breezy, with a west wind 6 to 16 mph becoming south southwest after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.
Wednesday
Partly sunny, with a high near 55. Breezy, with a west southwest wind 14 to 22 mph, with gusts as high as 33 mph.
Wednesday Night
Mostly cloudy, with a low around 41. Windy, with a southwest wind 23 to 25 mph, with gusts as high as 38 mph.
Thursday
A 20 percent chance of showers. Partly sunny, with a high near 54. Breezy, with a west southwest wind 17 to 21 mph, with gusts as high as 32 mph.
Thursday Night
A chance of rain and snow showers before 11pm, then a chance of snow showers. Mostly cloudy, with a low around 23. Chance of precipitation is 30%.
Friday
Partly sunny, with a high near 47.
Friday Night
Mostly cloudy, with a low around 33.
Saturday
Mostly sunny, with a high near 53. Breezy.
Saturday Night
Partly cloudy, with a low around 34.
Sunday
Mostly sunny, with a high near 54. Breezy.
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ABOUT THIS FORECAST

 
Point Forecast:
Casper WY
 42.85°N 106.34°W (Elev. 5154 ft)
2:31 pm MST Dec 8, 2025
4pm MST Dec 8, 2025-6pm MST Dec 14, 2025
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database