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

Erin Strengthens to a Hurricane; Heavy Rainfall Possible in Puerto Rico and the Virgin Islands, the Upper Midwest, South Texas

Hurricane Erin may bring isolated flash and urban flooding, landslides or mudslides, and possible tropical storm conditions to Puerto Rico and the U.S. Virgin Islands this weekend. Scattered thunderstorms and heavy rainfall may bring areas of flooding this weekend over the Upper Midwest. A tropical disturbance will bring locally heavy rain and mainly urban flash flooding to far southern Texas. Read More >

Hazardous Weather Conditions

Current conditions at

Casper, Natrona County International Airport (KCPR)

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

Clear

57°F

14°C

Humidity 62%
Wind Speed WSW 6 MPH
Barometer 30.09 in (1018.96 mb)
Dewpoint 44°F (7°C)
Visibility 10.00 mi
Last update 17 Aug 05:00 AM MDT
Extended Forecast for

Casper WY

  • Today

    Today: Mostly sunny, with a high near 86. Breezy, with a southwest wind 8 to 16 mph, with gusts as high as 23 mph.

    High: 86 °F

    Sunny then
    Mostly Sunny
    and Breezy

  • Tonight

    Tonight: Partly cloudy, with a low around 57. Southwest wind around 6 mph becoming light and variable.

    Low: 57 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 92. Southwest wind 5 to 8 mph becoming west northwest in the afternoon.

    High: 92 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 56. West northwest wind 5 to 7 mph becoming calm after midnight.

    Low: 56 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 95. Calm wind becoming southeast around 6 mph in the afternoon.

    High: 95 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 59. East wind 6 to 9 mph becoming south after midnight.

    Low: 59 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 97. Light and variable wind becoming southwest around 6 mph in the morning.

    High: 97 °F

    Hot

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 61.

    Low: 61 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 91.

    High: 91 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 86. Breezy, with a southwest wind 8 to 16 mph, with gusts as high as 23 mph.
Tonight
Partly cloudy, with a low around 57. Southwest wind around 6 mph becoming light and variable.
Monday
Sunny, with a high near 92. Southwest wind 5 to 8 mph becoming west northwest in the afternoon.
Monday Night
Mostly clear, with a low around 56. West northwest wind 5 to 7 mph becoming calm after midnight.
Tuesday
Sunny, with a high near 95. Calm wind becoming southeast around 6 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 59. East wind 6 to 9 mph becoming south after midnight.
Wednesday
Sunny and hot, with a high near 97. Light and variable wind becoming southwest around 6 mph in the morning.
Wednesday Night
Mostly clear, with a low around 61.
Thursday
Mostly sunny, with a high near 91.
Thursday Night
A 20 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 58.
Friday
A chance of showers and thunderstorms. Mostly sunny, with a high near 88.
Friday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 55.
Saturday
A chance of showers and thunderstorms. Mostly sunny, with a high near 86.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Casper WY
 42.85°N 106.34°W (Elev. 5154 ft)
Last Update:
4:57 am MDT Aug 17, 2025
Forecast Valid:
5am MDT Aug 17, 2025-6pm MDT Aug 23, 2025
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation