Severe Weather and Heavy Rain from the Ohio Valley to the Mid-Atlantic; Heat Persists in the South-Central U.S.

Widespread strong thunderstorms with damaging winds and locally heavy rain are expected across portions of the Ohio Valley into southern Mid-Atlantic and Carolinas. Rounds of strong thunderstorms are expected to develop across the northern and central Plains. Sweltering heat remains most persistent across the South-Central Plains and Lower/Middle Mississippi Valley through next week. Read More >

Current conditions at

Custer, Custer County Airport (KCUT)

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

Fair

63°F

17°C

Humidity 73%
Wind Speed SW 5 mph
Barometer 30.16 in (1013.8 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 6 Sep 1:53 am MDT
Extended Forecast for

Edgemont SD

  • Overnight

    Overnight: Partly cloudy, with a low around 65. East wind 3 to 6 mph.

    Low: 65 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 97. Light and variable wind becoming southeast 5 to 10 mph in the morning. Winds could gust as high as 20 mph.

    High: 97 °F

    Sunny

  • Sunday Night

    Sunday Night: A 50 percent chance of showers and thunderstorms.  Partly cloudy, with a low around 66. Southeast wind 7 to 16 mph becoming west after midnight. Winds could gust as high as 28 mph.

    Low: 66 °F

    Chance
    T-storms then
    Chance
    Showers

  • Labor Day

    Labor Day: Cloudy through mid morning, then gradual clearing, with a high near 94. Breezy, with a west wind 7 to 12 mph increasing to 21 to 26 mph in the afternoon. Winds could gust as high as 41 mph.

    High: 94 °F

    Gradual
    Clearing and
    Breezy

  • Monday Night

    Monday Night: Partly cloudy, with a low around 58. Breezy, with a west wind 18 to 23 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 39 mph.

    Low: 58 °F

    Partly Cloudy
    and Breezy
    then Partly
    Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 86. Breezy, with a west wind 8 to 13 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 34 mph.

    High: 86 °F

    Sunny then
    Sunny and
    Breezy

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 52.

    Low: 52 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 84.

    High: 84 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 54.

    Low: 54 °F

    Mostly Clear

Detailed Forecast

Overnight
Partly cloudy, with a low around 65. East wind 3 to 6 mph.
Sunday
Sunny, with a high near 97. Light and variable wind becoming southeast 5 to 10 mph in the morning. Winds could gust as high as 20 mph.
Sunday Night
A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 66. Southeast wind 7 to 16 mph becoming west after midnight. Winds could gust as high as 28 mph.
Labor Day
Cloudy through mid morning, then gradual clearing, with a high near 94. Breezy, with a west wind 7 to 12 mph increasing to 21 to 26 mph in the afternoon. Winds could gust as high as 41 mph.
Monday Night
Partly cloudy, with a low around 58. Breezy, with a west wind 18 to 23 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 39 mph.
Tuesday
Sunny, with a high near 86. Breezy, with a west wind 8 to 13 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 34 mph.
Tuesday Night
Mostly clear, with a low around 52.
Wednesday
Sunny, with a high near 84.
Wednesday Night
Mostly clear, with a low around 54.
Thursday
Sunny, with a high near 91.
Thursday Night
Mostly clear, with a low around 56.
Friday
Sunny, with a high near 90.
Friday Night
Mostly clear, with a low around 56. Breezy.
Saturday
A slight chance of showers. Mostly sunny, with a high near 79. Breezy.
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ABOUT THIS FORECAST

 
Point Forecast:
Edgemont SD
 43.31°N 103.83°W (Elev. 3589 ft)
1:06 am MDT Sep 6, 2026
2am MDT Sep 6, 2026-6pm MDT Sep 12, 2026
 
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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