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

Areas of Dangerous Heat and Heavy Rain with Possible Flooding into this Weekend

Hot temperatures and high humidity are forecast to continue across the mid-Mississippi Valley into this weekend with heat advisories in effect. Heavy to excessive rainfall occurring at times through Sunday could bring areas of flooding to parts of the upper Midwest, central Great Lakes, southern New England and Virginia/North Carolina tidewater region. Read More >

Current conditions at

Casper, Natrona County International Airport (KCPR)

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

Clear

59°F

15°C

Humidity 93%
Wind Speed E 4 MPH
Barometer 30.21 in (1023.03 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 17 Sep 09:00 PM MDT
Extended Forecast for

Casper WY

  • Tonight

    Tonight: Partly cloudy, with a steady temperature around 58. Light and variable wind becoming southwest 6 to 11 mph after midnight.

    Low: 58 °F

    Partly Cloudy

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms, mainly between 4pm and 5pm. Mostly sunny, with a high near 80. West wind 7 to 14 mph, with gusts as high as 22 mph.

    High: 80 °F

    Mostly Sunny
    then Chance
    Showers

  • Friday Night

    Friday Night: Showers and thunderstorms before midnight, then a chance of showers between midnight and 3am. Patchy fog after 4am. Low around 51. West southwest wind around 6 mph becoming calm after midnight. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 51 °F

    Showers then
    Chance
    Showers and
    Patchy Fog

  • Saturday

    Saturday: A 40 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 73. Calm wind becoming west southwest 5 to 9 mph in the morning. Winds could gust as high as 20 mph.

    High: 73 °F

    Mostly Sunny
    then Chance
    Showers

  • Saturday Night

    Saturday Night: Showers likely and possibly a thunderstorm before midnight, then a chance of showers and thunderstorms between midnight and 3am, then a chance of showers after 3am. Mostly cloudy, with a low around 46. Southwest wind 5 to 8 mph becoming north northeast in the evening. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 46 °F

    Showers
    Likely

  • Sunday

    Sunday: A chance of showers, then showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 66. West wind 8 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 60%.

    High: 66 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: A 30 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 43. Northwest wind around 6 mph becoming calm after midnight.

    Low: 43 °F

    Chance
    Showers then
    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 74.

    High: 74 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 46.

    Low: 46 °F

    Mostly Clear

Detailed Forecast

Tonight
Partly cloudy, with a steady temperature around 58. Light and variable wind becoming southwest 6 to 11 mph after midnight.
Friday
A 30 percent chance of showers and thunderstorms, mainly between 4pm and 5pm. Mostly sunny, with a high near 80. West wind 7 to 14 mph, with gusts as high as 22 mph.
Friday Night
Showers and thunderstorms before midnight, then a chance of showers between midnight and 3am. Patchy fog after 4am. Low around 51. West southwest wind around 6 mph becoming calm after midnight. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday
A 40 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 73. Calm wind becoming west southwest 5 to 9 mph in the morning. Winds could gust as high as 20 mph.
Saturday Night
Showers likely and possibly a thunderstorm before midnight, then a chance of showers and thunderstorms between midnight and 3am, then a chance of showers after 3am. Mostly cloudy, with a low around 46. Southwest wind 5 to 8 mph becoming north northeast in the evening. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday
A chance of showers, then showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 66. West wind 8 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 60%.
Sunday Night
A 30 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 43. Northwest wind around 6 mph becoming calm after midnight.
Monday
Sunny, with a high near 74.
Monday Night
Mostly clear, with a low around 46.
Tuesday
A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 78.
Tuesday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 48.
Wednesday
Sunny, with a high near 79.
Wednesday Night
Mostly clear, with a low around 49.
Thursday
Sunny, with a high near 81.
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ABOUT THIS FORECAST

 
Point Forecast:
Casper WY
 42.83°N 106.34°W (Elev. 5236 ft)
Last Update:
8:49 pm MDT Sep 17, 2026
Forecast Valid:
9pm MDT Sep 17, 2026-6pm MDT Sep 24, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation