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.

Thunderstorm in Vicinity Light Rain

77°F

25°C

Humidity 29%
Wind Speed S 10 G 31 mph
Barometer 30.20 in (1015.7 mb)
Dewpoint 42°F (6°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 5 Sep 11:53 am MDT
Extended Forecast for

3 Miles SW Edgemont SD

  • This Afternoon

    This Afternoon: A 20 percent chance of showers and thunderstorms before 2pm.  Mostly sunny, with a high near 96. West wind 6 to 10 mph becoming northeast. Winds could gust as high as 18 mph.

    High: 96 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: Partly cloudy, with a low around 64. East wind 6 to 11 mph becoming light and variable  after midnight. Winds could gust as high as 18 mph.

    Low: 64 °F

    Partly Cloudy

  • Sunday

    Sunday: A slight chance of showers between noon and 3pm, then a slight chance of showers and thunderstorms after 3pm.  Mostly sunny, with a high near 96. Light and variable wind becoming southeast 6 to 11 mph in the morning. Winds could gust as high as 23 mph.  Chance of precipitation is 20%.

    High: 96 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms.  Increasing clouds, with a low around 66. Southeast wind 7 to 16 mph becoming west after midnight. Winds could gust as high as 26 mph.  Chance of precipitation is 50%.

    Low: 66 °F

    Chance
    Showers

  • Labor Day

    Labor Day: Partly sunny, with a high near 92. Breezy, with a west wind 6 to 11 mph increasing to 19 to 24 mph in the afternoon. Winds could gust as high as 41 mph.

    High: 92 °F

    Mostly Cloudy
    then Partly
    Sunny and
    Breezy

  • Monday Night

    Monday Night: Partly cloudy, with a low around 59. Breezy, with a west wind 14 to 20 mph, with gusts as high as 34 mph.

    Low: 59 °F

    Partly Cloudy
    and Breezy

  • Tuesday

    Tuesday: Sunny, with a high near 85. Breezy.

    High: 85 °F

    Sunny then
    Sunny and
    Breezy

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 53.

    Low: 53 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 86.

    High: 86 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
A 20 percent chance of showers and thunderstorms before 2pm. Mostly sunny, with a high near 96. West wind 6 to 10 mph becoming northeast. Winds could gust as high as 18 mph.
Tonight
Partly cloudy, with a low around 64. East wind 6 to 11 mph becoming light and variable after midnight. Winds could gust as high as 18 mph.
Sunday
A slight chance of showers between noon and 3pm, then a slight chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 96. Light and variable wind becoming southeast 6 to 11 mph in the morning. Winds could gust as high as 23 mph. Chance of precipitation is 20%.
Sunday Night
A chance of showers and thunderstorms. Increasing clouds, with a low around 66. Southeast wind 7 to 16 mph becoming west after midnight. Winds could gust as high as 26 mph. Chance of precipitation is 50%.
Labor Day
Partly sunny, with a high near 92. Breezy, with a west wind 6 to 11 mph increasing to 19 to 24 mph in the afternoon. Winds could gust as high as 41 mph.
Monday Night
Partly cloudy, with a low around 59. Breezy, with a west wind 14 to 20 mph, with gusts as high as 34 mph.
Tuesday
Sunny, with a high near 85. Breezy.
Tuesday Night
Mostly clear, with a low around 53.
Wednesday
Mostly sunny, with a high near 86.
Wednesday Night
Partly cloudy, with a low around 56.
Thursday
Mostly sunny, with a high near 90.
Thursday Night
Mostly clear, with a low around 58.
Friday
Sunny, with a high near 89.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SW Edgemont SD
 43.27°N 103.86°W (Elev. 3599 ft)
12:01 pm MDT Sep 5, 2026
12pm MDT Sep 5, 2026-6pm MDT Sep 11, 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