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

Tropical Storm Arthur and Heavy Rainfall in the South; Severe Weather in the Midwest

An outbreak of severe thunderstorms is expected across portions of Illinois and Indiana tonight. Intense tornadoes, swaths of damaging gusts, and hail in excess of 2 inches in diameter possible. Tropical Storm Arthur will continue to produce strong winds across coastal Upper Texas and Louisiana tonight, as well as potentially life-threatening flooding across southern Louisiana into Mississippi. Read More >

Current conditions at

Casper, Natrona County International Airport (KCPR)

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

Mostly Cloudy

63°F

17°C

Humidity 29%
Wind Speed NNE 20 MPH
Barometer 29.97 in (1014.9 mb)
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Last update 17 Jun 08:35 PM MDT
Extended Forecast for

Casper WY

  • Tonight

    Tonight: Mostly clear, with a low around 45. Breezy, with a north northeast wind 16 to 21 mph becoming light north after midnight. Winds could gust as high as 31 mph.

    Low: 45 °F

    Mostly Clear
    and Breezy
    then Partly
    Cloudy

  • Thursday

    Thursday: Sunny, with a high near 82. Light west wind becoming west northwest 5 to 10 mph in the afternoon. Winds could gust as high as 21 mph.

    High: 82 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 48. Breezy, with a northeast wind 12 to 17 mph becoming north northeast 6 to 11 mph after midnight. Winds could gust as high as 26 mph.

    Low: 48 °F

    Partly Cloudy
    and Breezy
    then Partly
    Cloudy

  • Juneteenth

    Juneteenth: Sunny, with a high near 85. North wind 5 to 9 mph becoming east in the afternoon.

    High: 85 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 54. Breezy, with an east wind 13 to 18 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 28 mph.

    Low: 54 °F

    Partly Cloudy
    and Breezy

  • Saturday

    Saturday: A 50 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 89. Breezy, with a light and variable wind becoming north northwest 16 to 21 mph in the morning. Winds could gust as high as 32 mph.

    High: 89 °F

    Partly Sunny
    then Chance
    T-storms and
    Breezy

  • Saturday Night

    Saturday Night: A 40 percent chance of showers and thunderstorms, mainly before midnight. Partly cloudy, with a low around 50. Breezy, with a north wind 5 to 15 mph becoming west after midnight. Winds could gust as high as 22 mph.

    Low: 50 °F

    Chance
    T-storms and
    Breezy then
    Slight Chance
    T-storms

  • Sunday

    Sunday: A slight chance of showers, then a chance of showers and thunderstorms after noon. Mostly sunny, with a high near 78. Chance of precipitation is 40%.

    High: 78 °F

    Slight Chance
    Showers then
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A 10 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 48.

    Low: 48 °F

    Slight Chance
    T-storms then
    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 45. Breezy, with a north northeast wind 16 to 21 mph becoming light north after midnight. Winds could gust as high as 31 mph.
Thursday
Sunny, with a high near 82. Light west wind becoming west northwest 5 to 10 mph in the afternoon. Winds could gust as high as 21 mph.
Thursday Night
Partly cloudy, with a low around 48. Breezy, with a northeast wind 12 to 17 mph becoming north northeast 6 to 11 mph after midnight. Winds could gust as high as 26 mph.
Juneteenth
Sunny, with a high near 85. North wind 5 to 9 mph becoming east in the afternoon.
Friday Night
Partly cloudy, with a low around 54. Breezy, with an east wind 13 to 18 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 28 mph.
Saturday
A 50 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 89. Breezy, with a light and variable wind becoming north northwest 16 to 21 mph in the morning. Winds could gust as high as 32 mph.
Saturday Night
A 40 percent chance of showers and thunderstorms, mainly before midnight. Partly cloudy, with a low around 50. Breezy, with a north wind 5 to 15 mph becoming west after midnight. Winds could gust as high as 22 mph.
Sunday
A slight chance of showers, then a chance of showers and thunderstorms after noon. Mostly sunny, with a high near 78. Chance of precipitation is 40%.
Sunday Night
A 10 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 48.
Monday
A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 79.
Monday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 49.
Tuesday
Sunny, with a high near 83.
Tuesday Night
Mostly clear, with a low around 50.
Wednesday
Sunny, with a high near 88.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Casper WY
 42.87°N 106.34°W (Elev. 5217 ft)
Last Update:
8:47 pm MDT Jun 17, 2026
Forecast Valid:
8pm MDT Jun 17, 2026-6pm MDT Jun 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