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

56°F

13°C

Humidity 84%
Wind Speed SE 8 mph
Barometer 30.00 in (1011.7 mb)
Dewpoint 51°F (11°C)
Visibility 10.00 mi
Last update 20 Jun 12:53 pm MDT
Extended Forecast for

5 Miles WSW Mount Rushmore SD

  • This Afternoon

    This Afternoon: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 61. Southeast wind around 7 mph, with gusts as high as 24 mph.

    High: 61 °F

    Chance
    T-storms

  • Tonight

    Tonight: Showers and possibly a thunderstorm, mainly before 10pm, then a chance of showers and thunderstorms after 10pm. Low around 48. Southeast wind around 6 mph becoming calm. Winds could gust as high as 21 mph. Chance of precipitation is 80%.

    Low: 48 °F

    Showers then
    Chance
    T-storms

  • Sunday

    Sunday: A chance of showers, then showers likely and possibly a thunderstorm after 9am. Mostly cloudy, with a high near 58. West wind 5 to 10 mph becoming northeast in the afternoon. Winds could gust as high as 24 mph. Chance of precipitation is 70%.

    High: 58 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and midnight. Mostly cloudy, with a low around 41. North wind 5 to 8 mph becoming light and variable. Winds could gust as high as 22 mph. Chance of precipitation is 20%.

    Low: 41 °F

    Slight Chance
    T-storms then
    Mostly Cloudy

  • Monday

    Monday: A chance of showers, then showers and possibly a thunderstorm after noon. High near 60. West wind around 5 mph becoming light and variable in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 80%.

    High: 60 °F

    Chance
    Showers then
    Showers

  • Monday Night

    Monday Night: Showers likely and possibly a thunderstorm before midnight, then a chance of showers. Mostly cloudy, with a low around 42. Light and variable wind becoming northwest 5 to 7 mph in the evening. Winds could gust as high as 17 mph. Chance of precipitation is 70%.

    Low: 42 °F

    Showers
    Likely then
    Chance
    Showers

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 61.

    High: 61 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 38.

    Low: 38 °F

    Mostly Clear

  • Wednesday

    Wednesday: A chance of showers, with thunderstorms also possible after noon. Mostly sunny, with a high near 60.

    High: 60 °F

    Chance
    Showers then
    Chance
    T-storms

Detailed Forecast

This Afternoon
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 61. Southeast wind around 7 mph, with gusts as high as 24 mph.
Tonight
Showers and possibly a thunderstorm, mainly before 10pm, then a chance of showers and thunderstorms after 10pm. Low around 48. Southeast wind around 6 mph becoming calm. Winds could gust as high as 21 mph. Chance of precipitation is 80%.
Sunday
A chance of showers, then showers likely and possibly a thunderstorm after 9am. Mostly cloudy, with a high near 58. West wind 5 to 10 mph becoming northeast in the afternoon. Winds could gust as high as 24 mph. Chance of precipitation is 70%.
Sunday Night
A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and midnight. Mostly cloudy, with a low around 41. North wind 5 to 8 mph becoming light and variable. Winds could gust as high as 22 mph. Chance of precipitation is 20%.
Monday
A chance of showers, then showers and possibly a thunderstorm after noon. High near 60. West wind around 5 mph becoming light and variable in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 80%.
Monday Night
Showers likely and possibly a thunderstorm before midnight, then a chance of showers. Mostly cloudy, with a low around 42. Light and variable wind becoming northwest 5 to 7 mph in the evening. Winds could gust as high as 17 mph. Chance of precipitation is 70%.
Tuesday
A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 61.
Tuesday Night
Mostly clear, with a low around 38.
Wednesday
A chance of showers, with thunderstorms also possible after noon. Mostly sunny, with a high near 60.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 42.
Thursday
Showers likely and possibly a thunderstorm. Mostly sunny, with a high near 62.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 47.
Friday
A chance of showers and thunderstorms. Partly sunny, with a high near 71.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles WSW Mount Rushmore SD
 43.85°N 103.55°W (Elev. 6490 ft)
Last Update:
12:37 pm MDT Jun 20, 2026
Forecast Valid:
1pm 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