National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Lowell to Impact Hawaii; Heat Persists in the South-Central U.S.

Hurricane Lowell is forecast to pass west of Kauai`s coastal waters tonight. Impacts such as high surf and heavy rain could impact all of the islands. Sweltering heat remains across the South-Central Plains and Lower/Middle Mississippi Valley into this week with limited nighttime relief. Periods of moderate to heavy rainfall will be possible through Tuesday morning in the northern Rockies. Read More >

Current conditions at

Custer, Custer County Airport (KCUT)

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

Fair

52°F

11°C

Humidity 69%
Wind Speed W 3 mph
Barometer 30.13 in (1014.1 mb)
Dewpoint 42°F (6°C)
Visibility 10.00 mi
Last update 8 Sep 3:53 am MDT
Extended Forecast for

Mount Rushmore SD

  • Today

    Today: Sunny, with a high near 78. West wind 5 to 7 mph, with gusts as high as 20 mph.

    High: 78 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 54. Calm wind becoming northwest 5 to 7 mph after midnight. Winds could gust as high as 20 mph.

    Low: 54 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 75. Northwest wind around 5 mph becoming calm in the afternoon.

    High: 75 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 55. Calm wind becoming west around 5 mph.

    Low: 55 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 83. Calm wind becoming southwest around 5 mph. Winds could gust as high as 15 mph.

    High: 83 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 62. Calm wind becoming west 5 to 7 mph after midnight. Winds could gust as high as 20 mph.

    Low: 62 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 79.

    High: 79 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 49.

    Low: 49 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 67.

    High: 67 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 78. West wind 5 to 7 mph, with gusts as high as 20 mph.
Tonight
Mostly clear, with a low around 54. Calm wind becoming northwest 5 to 7 mph after midnight. Winds could gust as high as 20 mph.
Wednesday
Sunny, with a high near 75. Northwest wind around 5 mph becoming calm in the afternoon.
Wednesday Night
Clear, with a low around 55. Calm wind becoming west around 5 mph.
Thursday
Sunny, with a high near 83. Calm wind becoming southwest around 5 mph. Winds could gust as high as 15 mph.
Thursday Night
Mostly clear, with a low around 62. Calm wind becoming west 5 to 7 mph after midnight. Winds could gust as high as 20 mph.
Friday
Sunny, with a high near 79.
Friday Night
Mostly clear, with a low around 49.
Saturday
Mostly sunny, with a high near 67.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 51.
Sunday
A chance of showers. Partly sunny, with a high near 65.
Sunday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 47.
Monday
A slight chance of showers. Mostly sunny, with a high near 65.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mount Rushmore SD
 43.87°N 103.46°W (Elev. 5000 ft)
Last Update:
3:31 am MDT Sep 8, 2026
Forecast Valid:
4am MDT Sep 8, 2026-6pm MDT Sep 14, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation