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

Risks of Severe Thunderstorms and Excessive Rainfall; Fire Weather Concerns and Record Warmth

Severe thunderstorms and flash flooding risks increase across the center of the nation today. Meanwhile, ongoing thunderstorms and flash flooding will linger along the Gulf Coast states through the evening. The Great Basin and Intermountain West, warm temperatures and dry fuels with dry lightning may enhance fire weather potential. In addition, across interior Alaska, Red Flag Warning are posted. Read More >

Current conditions at

Custer, Custer County Airport (KCUT)

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

Overcast

58°F

14°C

Humidity 60%
Wind Speed SE 9 mph
Barometer 30.06 in (1013.2 mb)
Dewpoint 44°F (7°C)
Visibility 10.00 mi
Last update 20 Jun 8:53 am MDT
Extended Forecast for

Mount Rushmore SD

  • Today

    Today: A 50 percent chance of showers and thunderstorms, mainly after noon. Mostly cloudy, with a high near 65. Southeast wind 5 to 8 mph, with gusts as high as 23 mph.

    High: 65 °F

    Slight Chance
    T-storms then
    Chance
    T-storms

  • Tonight

    Tonight: Showers likely and possibly a thunderstorm before midnight, then a chance of showers and thunderstorms after midnight. Patchy fog after 3am. Otherwise, cloudy, with a low around 53. Southeast wind 5 to 7 mph becoming calm in the evening. Winds could gust as high as 21 mph. Chance of precipitation is 70%.

    Low: 53 °F

    Showers
    Likely then
    Chance
    T-storms and
    Patchy Fog

  • Sunday

    Sunday: Showers likely, with thunderstorms also possible after noon. Patchy fog before 9am. Otherwise, cloudy, with a high near 62. Calm wind becoming north 5 to 7 mph in the afternoon. Winds could gust as high as 24 mph. Chance of precipitation is 70%.

    High: 62 °F

    Showers
    Likely and
    Patchy Fog

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Mostly cloudy, with a low around 50. North wind around 6 mph becoming calm in the evening. Winds could gust as high as 23 mph. Chance of precipitation is 30%.

    Low: 50 °F

    Chance
    Showers then
    Mostly Cloudy

  • Monday

    Monday: A chance of showers, then showers and possibly a thunderstorm after noon. High near 66. Light and variable wind. Chance of precipitation is 80%.

    High: 66 °F

    Chance
    Showers then
    Showers

  • Monday Night

    Monday Night: Showers and possibly a thunderstorm before midnight, then a slight chance of showers and thunderstorms after midnight. Low around 49. Calm wind. Chance of precipitation is 80%.

    Low: 49 °F

    Showers then
    Slight Chance
    T-storms

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms after noon. Sunny, with a high near 68.

    High: 68 °F

    Sunny then
    Slight Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A slight chance of showers after midnight. Mostly clear, with a low around 48.

    Low: 48 °F

    Mostly Clear
    then Slight
    Chance
    Showers

  • Wednesday

    Wednesday: A slight chance of showers, then a chance of showers and thunderstorms after noon. Mostly sunny, with a high near 67.

    High: 67 °F

    Slight Chance
    Showers then
    Chance
    T-storms

Detailed Forecast

Today
A 50 percent chance of showers and thunderstorms, mainly after noon. Mostly cloudy, with a high near 65. Southeast wind 5 to 8 mph, with gusts as high as 23 mph.
Tonight
Showers likely and possibly a thunderstorm before midnight, then a chance of showers and thunderstorms after midnight. Patchy fog after 3am. Otherwise, cloudy, with a low around 53. Southeast wind 5 to 7 mph becoming calm in the evening. Winds could gust as high as 21 mph. Chance of precipitation is 70%.
Sunday
Showers likely, with thunderstorms also possible after noon. Patchy fog before 9am. Otherwise, cloudy, with a high near 62. Calm wind becoming north 5 to 7 mph in the afternoon. Winds could gust as high as 24 mph. Chance of precipitation is 70%.
Sunday Night
A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Mostly cloudy, with a low around 50. North wind around 6 mph becoming calm in the evening. Winds could gust as high as 23 mph. Chance of precipitation is 30%.
Monday
A chance of showers, then showers and possibly a thunderstorm after noon. High near 66. Light and variable wind. Chance of precipitation is 80%.
Monday Night
Showers and possibly a thunderstorm before midnight, then a slight chance of showers and thunderstorms after midnight. Low around 49. Calm wind. Chance of precipitation is 80%.
Tuesday
A 20 percent chance of showers and thunderstorms after noon. Sunny, with a high near 68.
Tuesday Night
A slight chance of showers after midnight. Mostly clear, with a low around 48.
Wednesday
A slight chance of showers, then a chance of showers and thunderstorms after noon. Mostly sunny, with a high near 67.
Wednesday Night
A chance of showers and thunderstorms, mainly after midnight. Partly cloudy, with a low around 50.
Thursday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 69.
Thursday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 53.
Friday
A chance of showers and thunderstorms. Mostly sunny, with a high near 77.
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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:
7:37 am MDT Jun 20, 2026
Forecast Valid:
9am MDT Jun 20, 2026-6pm MDT Jun 26, 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