Areas of Extreme Heat and Excessive Rainfall Potential

Dangerous and extreme heat will remain across portions of the central U.S. this week, persisting across the mid to lower Mississippi Valley, Gulf Coast, southern Plains and portions of Texas. A heat wave over the Southwest U.S. will peak this weekend. Heavy to excessive rainfall may produce flash flooding from the Delmarva Peninsula north into the Hudson Valley today and tonight. Read More >

Current conditions at

Custer, Custer County Airport (KCUT)

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

Mostly Cloudy

84°F

29°C

Humidity 33%
Wind Speed E 10 G 18 mph
Barometer 30.11 in (1011.5 mb)
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Heat Index82°F (28°C)
Last update 28 Jul 5:53 pm MDT
Extended Forecast for

4 Miles WSW Mount Rushmore SD

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms before 8pm.  Mostly clear, with a low around 61. East wind around 6 mph becoming southwest after midnight. Winds could gust as high as 18 mph.

    Low: 61 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Wednesday

    Wednesday: A 40 percent chance of showers and thunderstorms after noon.  Mostly sunny, with a high near 81. Southwest wind 5 to 7 mph becoming southeast in the afternoon. Winds could gust as high as 21 mph.

    High: 81 °F

    Sunny then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Showers and thunderstorms likely, mainly before midnight.  Mostly cloudy, with a low around 60. Southeast wind 6 to 8 mph becoming west after midnight. Winds could gust as high as 20 mph.  Chance of precipitation is 70%.

    Low: 60 °F

    T-storms
    Likely then
    Chance
    T-storms

  • Thursday

    Thursday: A slight chance of showers, then showers likely and possibly a thunderstorm after noon.  Cloudy, then gradually becoming mostly sunny, with a high near 78. West wind 5 to 7 mph becoming northeast in the morning. Winds could gust as high as 21 mph.  Chance of precipitation is 70%.

    High: 78 °F

    Slight Chance
    Showers then
    Showers
    Likely

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 56. North wind 5 to 8 mph becoming west after midnight. Winds could gust as high as 21 mph.

    Low: 56 °F

    Mostly Clear

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms after noon.  Sunny, with a high near 78. West wind around 5 mph becoming calm. Winds could gust as high as 18 mph.

    High: 78 °F

    Sunny then
    Chance
    T-storms

  • Friday Night

    Friday Night: Mostly clear, with a low around 58.

    Low: 58 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 81.

    High: 81 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 65.

    Low: 65 °F

    Mostly Clear

Detailed Forecast

Tonight
A 20 percent chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 61. East wind around 6 mph becoming southwest after midnight. Winds could gust as high as 18 mph.
Wednesday
A 40 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 81. Southwest wind 5 to 7 mph becoming southeast in the afternoon. Winds could gust as high as 21 mph.
Wednesday Night
Showers and thunderstorms likely, mainly before midnight. Mostly cloudy, with a low around 60. Southeast wind 6 to 8 mph becoming west after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 70%.
Thursday
A slight chance of showers, then showers likely and possibly a thunderstorm after noon. Cloudy, then gradually becoming mostly sunny, with a high near 78. West wind 5 to 7 mph becoming northeast in the morning. Winds could gust as high as 21 mph. Chance of precipitation is 70%.
Thursday Night
Mostly clear, with a low around 56. North wind 5 to 8 mph becoming west after midnight. Winds could gust as high as 21 mph.
Friday
A 30 percent chance of showers and thunderstorms after noon. Sunny, with a high near 78. West wind around 5 mph becoming calm. Winds could gust as high as 18 mph.
Friday Night
Mostly clear, with a low around 58.
Saturday
Sunny, with a high near 81.
Saturday Night
Mostly clear, with a low around 65.
Sunday
Sunny, with a high near 89.
Sunday Night
Mostly clear, with a low around 63.
Monday
Sunny, with a high near 77.
Monday Night
A slight chance of showers and thunderstorms. Mostly clear, with a low around 52.
Tuesday
Mostly sunny, with a high near 69.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles WSW Mount Rushmore SD
 43.87°N 103.52°W (Elev. 6148 ft)
6:02 pm MDT Jul 28, 2026
6pm MDT Jul 28, 2026-6pm MDT Aug 4, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database