Extreme Heat and Fire Weather Conditions in the West; Heavy Rain in the Southeast; Poor Air Quality

Extreme heat will begin to peak across the Desert Southwest. Multiple days of hot, dry and windy conditions are expected to bring fire weather concerns for portions of the Four Corners region into the central Great Basin and Rockies. Heavy rainfall and a flash flooding threat continues in the Southeast. Poor air quality persists from the Upper Midwest into the Northeast due to wildfire smoke. Read More >

Hazardous Weather Conditions

Current conditions at

Custer, Custer County Airport (KCUT)

Lat: 43.73°NLon: 103.62°WElev: 5600ft.

Fair

76°F

24°C

Humidity 30%
Wind Speed E 10 G 20 mph
Barometer 30.29 in (1018.5 mb)
Dewpoint 42°F (6°C)
Visibility 10.00 mi
Heat Index77°F (25°C)
Last update 6 Aug 10:53 am MDT
Extended Forecast for

4 Miles SSE Keystone SD

  • Today

    Today: A 20 percent chance of showers and thunderstorms after 2pm.  Mostly sunny, with a high near 85. Southeast wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 85 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms before midnight.  Mostly clear, with a low around 68. Southeast wind around 5 mph becoming southwest after midnight. Winds could gust as high as 20 mph.

    Low: 68 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 95. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 95 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 69. West wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 69 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 84. West wind around 10 mph becoming north in the afternoon. Winds could gust as high as 25 mph.

    High: 84 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A 30 percent chance of showers and thunderstorms.  Partly cloudy, with a low around 58. North wind 5 to 10 mph becoming west after midnight. Winds could gust as high as 20 mph.

    Low: 58 °F

    Chance
    T-storms

  • Saturday

    Saturday: Mostly sunny, with a high near 78. West wind 5 to 10 mph becoming southeast in the afternoon. Winds could gust as high as 20 mph.

    High: 78 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A slight chance of showers and thunderstorms after midnight.  Partly cloudy, with a low around 58. Northwest wind around 5 mph, with gusts as high as 15 mph.

    Low: 58 °F

    Partly Cloudy
    then Slight
    Chance
    T-storms

  • Sunday

    Sunday: Mostly sunny, with a high near 77.

    High: 77 °F

    Mostly Sunny

Detailed Forecast

Today
A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 85. Southeast wind 5 to 10 mph, with gusts as high as 20 mph.
Tonight
A 20 percent chance of showers and thunderstorms before midnight. Mostly clear, with a low around 68. Southeast wind around 5 mph becoming southwest after midnight. Winds could gust as high as 20 mph.
Thursday
Sunny, with a high near 95. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Thursday Night
Mostly clear, with a low around 69. West wind 5 to 10 mph, with gusts as high as 20 mph.
Friday
Mostly sunny, with a high near 84. West wind around 10 mph becoming north in the afternoon. Winds could gust as high as 25 mph.
Friday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 58. North wind 5 to 10 mph becoming west after midnight. Winds could gust as high as 20 mph.
Saturday
Mostly sunny, with a high near 78. West wind 5 to 10 mph becoming southeast in the afternoon. Winds could gust as high as 20 mph.
Saturday Night
A slight chance of showers and thunderstorms after midnight. Partly cloudy, with a low around 58. Northwest wind around 5 mph, with gusts as high as 15 mph.
Sunday
Mostly sunny, with a high near 77.
Sunday Night
A slight chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 60.
Monday
Sunny, with a high near 81.
Monday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 62.
Tuesday
Mostly sunny, with a high near 84.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SSE Keystone SD
 43.83°N 103.37°W (Elev. 4400 ft)
11:09 am MDT Aug 6, 2025
11am MDT Aug 6, 2025-6pm MDT Aug 12, 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