Dangerous Heat in the Central and Eastern U.S.; Severe Thunderstorms in the Great Lakes

Thunderstorms with strong wind gusts and hail will be possible today from Michigan into the Lower Great Lakes region. A significant and dangerous heat wave will expand from the Central U.S. into the Eastern U.S this weekend through much of next week. Numerous daily record highs and warm lows are likely. Read More >

Hazardous Weather Conditions

Current conditions at

Custer, Custer County Airport (KCUT)

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

Fair

84°F

29°C

Humidity 13%
Wind Speed W 15 G 22 mph
Barometer 29.75 in (1000.0 mb)
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Heat Index81°F (27°C)
Last update 21 Jun 2:53 pm MDT
Extended Forecast for

Mount Rushmore SD

  • Tonight

    Tonight: Mostly clear, with a low around 61. East wind around 5 mph becoming north after midnight. Winds could gust as high as 15 mph.

    Low: 61 °F

    Mostly Clear

  • Sunday

    Sunday: A slight chance of showers, then a chance of showers and thunderstorms after noon.  Mostly sunny, with a high near 79. North wind around 5 mph becoming south in the afternoon. Winds could gust as high as 15 mph.  Chance of precipitation is 30%.

    High: 79 °F

    Slight Chance
    Showers then
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A 20 percent chance of showers and thunderstorms before 9pm.  Partly cloudy, with a low around 48. North wind around 5 mph becoming calm  in the evening.

    Low: 48 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 69. Calm wind becoming southeast around 5 mph.

    High: 69 °F

    Sunny

  • Monday Night

    Monday Night: A 30 percent chance of showers and thunderstorms, mainly after midnight.  Partly cloudy, with a low around 53. Southeast wind around 5 mph becoming calm.

    Low: 53 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Tuesday

    Tuesday: A chance of showers, with thunderstorms also possible after 3pm.  Partly sunny, with a high near 71. Calm wind becoming southeast around 5 mph. Winds could gust as high as 15 mph.  Chance of precipitation is 50%.

    High: 71 °F

    Slight Chance
    Showers then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm before midnight, then a chance of showers and thunderstorms after midnight.  Low around 57. East wind around 5 mph becoming calm.  Chance of precipitation is 80%.

    Low: 57 °F

    T-storms then
    Chance
    T-storms

  • Wednesday

    Wednesday: A chance of showers, then showers likely and possibly a thunderstorm after noon.  Partly sunny, with a high near 70. Calm wind becoming east around 5 mph.

    High: 70 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms before midnight.  Partly cloudy, with a low around 55.

    Low: 55 °F

    Chance
    T-storms then
    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 61. East wind around 5 mph becoming north after midnight. Winds could gust as high as 15 mph.
Sunday
A slight chance of showers, then a chance of showers and thunderstorms after noon. Mostly sunny, with a high near 79. North wind around 5 mph becoming south in the afternoon. Winds could gust as high as 15 mph. Chance of precipitation is 30%.
Sunday Night
A 20 percent chance of showers and thunderstorms before 9pm. Partly cloudy, with a low around 48. North wind around 5 mph becoming calm in the evening.
Monday
Sunny, with a high near 69. Calm wind becoming southeast around 5 mph.
Monday Night
A 30 percent chance of showers and thunderstorms, mainly after midnight. Partly cloudy, with a low around 53. Southeast wind around 5 mph becoming calm.
Tuesday
A chance of showers, with thunderstorms also possible after 3pm. Partly sunny, with a high near 71. Calm wind becoming southeast around 5 mph. Winds could gust as high as 15 mph. Chance of precipitation is 50%.
Tuesday Night
Showers and possibly a thunderstorm before midnight, then a chance of showers and thunderstorms after midnight. Low around 57. East wind around 5 mph becoming calm. Chance of precipitation is 80%.
Wednesday
A chance of showers, then showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 70. Calm wind becoming east around 5 mph.
Wednesday Night
A chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 55.
Thursday
A slight chance of showers and thunderstorms after noon. Sunny, with a high near 78.
Thursday Night
Mostly clear, with a low around 61.
Friday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 83.
Friday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 59.
Saturday
A chance of showers and thunderstorms. Mostly sunny, with a high near 76.
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ABOUT THIS FORECAST

 
Point Forecast:
Mount Rushmore SD
 43.87°N 103.46°W (Elev. 5000 ft)
2:50 pm MDT Jun 21, 2025
3pm MDT Jun 21, 2025-6pm MDT Jun 28, 2025
 
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Additional Resources

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Hourly Weather Forecast

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