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

Extreme Heat and Excessive Rainfall Today

Dangerous and extreme heat will remain across portions of the southern U.S. through the weekend. A heat wave over the Southwest U.S. will intensify this week, peaking and expanding into the Intermountain West and northern High Plains this weekend. Multiple rounds of thunderstorms will produce heavy to excessive rainfall with significant flash flooding across portions of southern New England. Read More >

Current conditions at

Custer, Custer County Airport (KCUT)

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

Fair

59°F

15°C

Humidity 96%
Wind Speed Calm
Barometer 30.07 in (1010.8 mb)
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Last update 30 Jul 2:53 am MDT
Extended Forecast for

5 Miles WSW Mount Rushmore SD

  • Overnight

    Overnight: A 30 percent chance of showers and thunderstorms after 4am. Mostly cloudy, with a steady temperature around 60. Southwest wind around 5 mph becoming north.

    Low: 60 °F

    Chance
    T-storms

  • Thursday

    Thursday: A slight chance of showers, then showers likely and possibly a thunderstorm after noon. Cloudy through mid morning, then gradual clearing, with a high near 76. North wind 3 to 7 mph. Winds could gust as high as 23 mph. Chance of precipitation is 70%.

    High: 76 °F

    Slight Chance
    Showers then
    Showers
    Likely

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 53. North wind 5 to 9 mph, with gusts as high as 23 mph.

    Low: 53 °F

    Mostly Clear

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms after noon. Increasing clouds, with a high near 77. Northwest wind around 5 mph becoming calm in the afternoon. Winds could gust as high as 17 mph.

    High: 77 °F

    Sunny then
    Chance
    T-storms

  • Friday Night

    Friday Night: Partly cloudy, with a low around 56. Light and variable wind becoming southwest 5 to 8 mph after midnight. Winds could gust as high as 17 mph.

    Low: 56 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 82. West wind 5 to 8 mph becoming south in the afternoon. Winds could gust as high as 21 mph.

    High: 82 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 61.

    Low: 61 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 90.

    High: 90 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 63.

    Low: 63 °F

    Mostly Clear

Detailed Forecast

Overnight
A 30 percent chance of showers and thunderstorms after 4am. Mostly cloudy, with a steady temperature around 60. Southwest wind around 5 mph becoming north.
Thursday
A slight chance of showers, then showers likely and possibly a thunderstorm after noon. Cloudy through mid morning, then gradual clearing, with a high near 76. North wind 3 to 7 mph. Winds could gust as high as 23 mph. Chance of precipitation is 70%.
Thursday Night
Mostly clear, with a low around 53. North wind 5 to 9 mph, with gusts as high as 23 mph.
Friday
A 30 percent chance of showers and thunderstorms after noon. Increasing clouds, with a high near 77. Northwest wind around 5 mph becoming calm in the afternoon. Winds could gust as high as 17 mph.
Friday Night
Partly cloudy, with a low around 56. Light and variable wind becoming southwest 5 to 8 mph after midnight. Winds could gust as high as 17 mph.
Saturday
Sunny, with a high near 82. West wind 5 to 8 mph becoming south in the afternoon. Winds could gust as high as 21 mph.
Saturday Night
Mostly clear, with a low around 61.
Sunday
Sunny, with a high near 90.
Sunday Night
Mostly clear, with a low around 63.
Monday
Sunny, with a high near 79.
Monday Night
A chance of showers. Mostly clear, with a low around 50.
Tuesday
Mostly sunny, with a high near 66.
Tuesday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 49.
Wednesday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 72.
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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:
1:36 am MDT Jul 30, 2026
Forecast Valid:
3am MDT Jul 30, 2026-6pm MDT Aug 5, 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