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

Areas of Excessive Rainfall; Watching for Tropical Cyclone Development in the Atlantic

Heavy to excessive rainfall Wednesday may bring areas of flash and urban flooding over portions of the Ohio and Tennessee Valleys. In Arizona and New Mexico, heavy to excessive rainfall from monsoon thunderstorms may bring isolated flash and urban flooding Thursday into Saturday. Two tropical waves in the Atlantic are being monitored for tropical cyclone formation within the next few days. Read More >

Hazardous Weather Conditions

Current conditions at

Casper, Natrona County International Airport (KCPR)

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

Clear

52°F

11°C

Humidity 81%
Wind Speed W 4 MPH
Barometer 30.36 in (1028.11 mb)
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 23 Sep 08:20 PM MDT
Extended Forecast for

11 Miles N Bar Nunn WY

  • Tonight

    Tonight: Patchy fog between 3am and 4am. Otherwise, mostly clear, with a low around 42. Southwest wind 3 to 7 mph.

    Low: 42 °F

    Partly Cloudy
    then Patchy
    Fog

  • Wednesday

    Wednesday: Sunny, with a high near 72. Southwest wind 7 to 13 mph.

    High: 72 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 41. Southwest wind 7 to 9 mph.

    Low: 41 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 76. Southwest wind 7 to 10 mph.

    High: 76 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 45. South southwest wind 7 to 11 mph.

    Low: 45 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 76. Southwest wind 9 to 13 mph becoming north northeast in the afternoon.

    High: 76 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 43. Northeast wind around 7 mph becoming southeast after midnight.

    Low: 43 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 79.

    High: 79 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 47.

    Low: 47 °F

    Mostly Clear

Detailed Forecast

Tonight
Patchy fog between 3am and 4am. Otherwise, mostly clear, with a low around 42. Southwest wind 3 to 7 mph.
Wednesday
Sunny, with a high near 72. Southwest wind 7 to 13 mph.
Wednesday Night
Mostly clear, with a low around 41. Southwest wind 7 to 9 mph.
Thursday
Sunny, with a high near 76. Southwest wind 7 to 10 mph.
Thursday Night
Mostly clear, with a low around 45. South southwest wind 7 to 11 mph.
Friday
Sunny, with a high near 76. Southwest wind 9 to 13 mph becoming north northeast in the afternoon.
Friday Night
Mostly clear, with a low around 43. Northeast wind around 7 mph becoming southeast after midnight.
Saturday
Sunny, with a high near 79.
Saturday Night
Mostly clear, with a low around 47.
Sunday
Mostly sunny, with a high near 78.
Sunday Night
Mostly cloudy, with a low around 49.
Monday
Mostly sunny, with a high near 75. Breezy.
Monday Night
Partly cloudy, with a low around 48.
Tuesday
Mostly sunny, with a high near 74. Breezy.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
11 Miles N Bar Nunn WY
 43.09°N 106.34°W (Elev. 5587 ft)
Last Update:
2:29 pm MDT Sep 23, 2025
Forecast Valid:
8pm MDT Sep 23, 2025-6pm MDT Sep 30, 2025
 
Forecast Discussion
 
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Additional Resources

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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