Heat Persists in the South Central U.S. and Southwest; Heavy rains in the Desert Southwest and Central Plains

Sweltering heat remains across the South-Central Plains, Lower/Middle Mississippi Valley, and the Southwest this week with limited nighttime relief. Thunderstorms will bring heavy rainfall leading to localized flash flooding in portions of the Desert Southwest and central Plains. Isolated strong to severe thunderstorms are possible across portions of the central Plains into the Northeast. Read More >

Current conditions at

Custer, Custer County Airport (KCUT)

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

Fair

53°F

12°C

Humidity 59%
Wind Speed N 9 mph
Barometer 30.29 in (1019.9 mb)
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Wind Chill50°F (10°C)
Last update 9 Sep 1:53 am MDT
Extended Forecast for

6 Miles WNW Custer County Airport SD

  • Overnight

    Overnight: Mostly clear, with a low around 44. North wind 7 to 9 mph, with gusts as high as 23 mph.

    Low: 44 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 68. West wind around 6 mph, with gusts as high as 20 mph.

    High: 68 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 43. Light and variable wind. Winds could gust as high as 16 mph.

    Low: 43 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 80. Calm wind becoming southwest around 6 mph in the morning. Winds could gust as high as 22 mph.

    High: 80 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 53. Calm wind becoming west around 6 mph after midnight. Winds could gust as high as 16 mph.

    Low: 53 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 75. West wind around 7 mph becoming north in the afternoon. Winds could gust as high as 24 mph.

    High: 75 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 44.

    Low: 44 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 65.

    High: 65 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after midnight.  Mostly cloudy, with a low around 46.

    Low: 46 °F

    Showers
    Likely

Detailed Forecast

Overnight
Mostly clear, with a low around 44. North wind 7 to 9 mph, with gusts as high as 23 mph.
Wednesday
Sunny, with a high near 68. West wind around 6 mph, with gusts as high as 20 mph.
Wednesday Night
Mostly clear, with a low around 43. Light and variable wind. Winds could gust as high as 16 mph.
Thursday
Sunny, with a high near 80. Calm wind becoming southwest around 6 mph in the morning. Winds could gust as high as 22 mph.
Thursday Night
Mostly clear, with a low around 53. Calm wind becoming west around 6 mph after midnight. Winds could gust as high as 16 mph.
Friday
Sunny, with a high near 75. West wind around 7 mph becoming north in the afternoon. Winds could gust as high as 24 mph.
Friday Night
Partly cloudy, with a low around 44.
Saturday
Mostly sunny, with a high near 65.
Saturday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after midnight. Mostly cloudy, with a low around 46.
Sunday
A chance of showers, with thunderstorms also possible after noon. Mostly cloudy, with a high near 67.
Sunday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 43.
Monday
Mostly sunny, with a high near 60.
Monday Night
Mostly clear, with a low around 38.
Tuesday
Sunny, with a high near 66.
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ABOUT THIS FORECAST

 
Point Forecast:
6 Miles WNW Custer County Airport SD
 43.77°N 103.72°W (Elev. 6047 ft)
12:31 am MDT Sep 9, 2026
2am MDT Sep 9, 2026-6pm MDT Sep 15, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database