Heavy Rainfall and Flooding Threats in the Midwest and Ohio Valley; Heat Continues in the Plains and Southeast

An active pattern will continue to bring heavy to excessive rainfall and flash flooding threats to the Midwest and Ohio Valley over the next couple of days. Dangerous heat continues across the central/southern Plains and Southeast U.S. into next week. There is potential for record-tying/breaking temperatures with many areas forecast to see their hottest temperatures so far this year. Read More >

Current conditions at

Custer, Custer County Airport (KCUT)

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

Light Rain Fog/Mist

57°F

14°C

Humidity 96%
Wind Speed E 8 mph
Barometer 30.14 in (1015.9 mb)
Dewpoint 56°F (13°C)
Visibility 5.00 mi
Last update 13 Aug 9:53 pm MDT
Extended Forecast for

Mount Rushmore SD

  • Tonight

    Tonight: A chance of showers and thunderstorms before 2am, then showers likely and possibly a thunderstorm between 2am and 3am, then showers likely after 3am.  Patchy fog.  Otherwise, cloudy, with a low around 57. Light southeast wind.  Chance of precipitation is 70%.

    Low: 57 °F

    Showers
    Likely and
    Patchy Fog

  • Friday

    Friday: A 40 percent chance of showers, mainly before 8am.  Mostly cloudy, with a high near 77. Calm wind becoming southwest around 6 mph. Winds could gust as high as 22 mph.

    High: 77 °F

    Chance
    Showers then
    Partly Sunny

  • Friday Night

    Friday Night: A 20 percent chance of showers and thunderstorms.  Mostly cloudy, with a low around 59. Light northwest wind. Winds could gust as high as 17 mph.

    Low: 59 °F

    Slight Chance
    T-storms

  • Saturday

    Saturday: Showers likely, with thunderstorms also possible after 9am.  Cloudy, with a high near 71. Calm wind. Winds could gust as high as 15 mph.  Chance of precipitation is 70%.

    High: 71 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before 3am, then a slight chance of showers.  Mostly cloudy, then gradually becoming mostly clear, with a low around 56. Calm wind.  Chance of precipitation is 50%.

    Low: 56 °F

    Chance
    T-storms then
    Slight Chance
    T-storms

  • Sunday

    Sunday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after noon.  Mostly sunny, with a high near 74. Light and variable wind.  Chance of precipitation is 70%.

    High: 74 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: A 20 percent chance of showers and thunderstorms before midnight.  Mostly clear, with a low around 58.

    Low: 58 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Monday

    Monday: A slight chance of showers and thunderstorms after noon.  Sunny, with a high near 80.

    High: 80 °F

    Sunny then
    Slight Chance
    T-storms

  • Monday Night

    Monday Night: A slight chance of showers after midnight.  Partly cloudy, with a low around 59.

    Low: 59 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

Detailed Forecast

Tonight
A chance of showers and thunderstorms before 2am, then showers likely and possibly a thunderstorm between 2am and 3am, then showers likely after 3am. Patchy fog. Otherwise, cloudy, with a low around 57. Light southeast wind. Chance of precipitation is 70%.
Friday
A 40 percent chance of showers, mainly before 8am. Mostly cloudy, with a high near 77. Calm wind becoming southwest around 6 mph. Winds could gust as high as 22 mph.
Friday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 59. Light northwest wind. Winds could gust as high as 17 mph.
Saturday
Showers likely, with thunderstorms also possible after 9am. Cloudy, with a high near 71. Calm wind. Winds could gust as high as 15 mph. Chance of precipitation is 70%.
Saturday Night
A chance of showers and thunderstorms before 3am, then a slight chance of showers. Mostly cloudy, then gradually becoming mostly clear, with a low around 56. Calm wind. Chance of precipitation is 50%.
Sunday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after noon. Mostly sunny, with a high near 74. Light and variable wind. Chance of precipitation is 70%.
Sunday Night
A 20 percent chance of showers and thunderstorms before midnight. Mostly clear, with a low around 58.
Monday
A slight chance of showers and thunderstorms after noon. Sunny, with a high near 80.
Monday Night
A slight chance of showers after midnight. Partly cloudy, with a low around 59.
Tuesday
A chance of showers and thunderstorms after noon. Partly sunny, with a high near 79.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 57.
Wednesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 77.
Wednesday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 58.
Thursday
A chance of showers and thunderstorms. Mostly sunny, with a high near 80.
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ABOUT THIS FORECAST

 
Point Forecast:
Mount Rushmore SD
 43.87°N 103.46°W (Elev. 5000 ft)
9:51 pm MDT Aug 13, 2026
10pm MDT Aug 13, 2026-6pm MDT Aug 20, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

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