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

Heat the Southwest; Fire Weather in the Central U.S.; Kona Low Impacting Hawaii

A rare March heat wave is ongoing with much above-normal temperatures over the Southwest U.S. through this weekend. Periods of critical fire weather will persist from the central Rockies to the central and southern Plains through the weekend as gusty winds and low relative humidity continue. A Kona low will continue to bring several rounds of moderate to heavy rainfall to Hawaii through Sunday. Read More >

Hazardous Weather Conditions

Current conditions at

Custer, Custer County Airport (KCUT)

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

Fair

51°F

11°C

Humidity 33%
Wind Speed NW 3 mph
Barometer 30.05 in (1012.3 mb)
Dewpoint 23°F (-5°C)
Visibility 10.00 mi
Last update 20 Mar 10:53 pm MDT
Extended Forecast for

4 Miles WSW Mount Rushmore SD

Red Flag Warning March 20, 11:37pm until March 21, 09:00pm
Click here for hazard details and duration
Red Flag Warning
  •  
    Red Flag Warning March 20, 11:37pm until March 21, 09:00pm

    NOW until 9:00pm Sat

    Red Flag Warning

  • Tonight

    Low: 50 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 75. Southwest wind 11 to 16 mph becoming northwest in the afternoon. Winds could gust as high as 26 mph.

    High: 75 °F

    Sunny

  • Saturday Night

    Saturday Night: A chance of rain before 3am, then a chance of rain and snow between 3am and 5am, then a chance of snow after 5am. Mostly cloudy, with a low around 38. Breezy, with a south wind 19 to 24 mph becoming northwest 10 to 15 mph after midnight. Winds could gust as high as 33 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.

    Low: 38 °F

    Breezy.
    Mostly Cloudy
    then Chance
    Rain/Snow

  • Sunday

    Sunday: A chance of snow before 11am, then a chance of rain between 11am and noon. Partly sunny, with a high near 50. West wind 6 to 9 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.

    High: 50 °F

    Chance
    Rain/Snow
    then Mostly
    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 33. Northwest wind 7 to 9 mph becoming southeast after midnight. Winds could gust as high as 16 mph.

    Low: 33 °F

    Partly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 58. Southwest wind 6 to 9 mph becoming east in the afternoon. Winds could gust as high as 15 mph.

    High: 58 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 37. Northeast wind 7 to 9 mph becoming northwest in the evening. Winds could gust as high as 17 mph.

    Low: 37 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 57. Northwest wind 6 to 9 mph becoming southeast in the afternoon. Winds could gust as high as 23 mph.

    High: 57 °F

    Partly Sunny

Detailed Forecast

Tonight
Mostly clear, with a low around 50. West wind 10 to 14 mph, with gusts as high as 20 mph.
Saturday
Sunny, with a high near 75. Southwest wind 11 to 16 mph becoming northwest in the afternoon. Winds could gust as high as 26 mph.
Saturday Night
A chance of rain before 3am, then a chance of rain and snow between 3am and 5am, then a chance of snow after 5am. Mostly cloudy, with a low around 38. Breezy, with a south wind 19 to 24 mph becoming northwest 10 to 15 mph after midnight. Winds could gust as high as 33 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.
Sunday
A chance of snow before 11am, then a chance of rain between 11am and noon. Partly sunny, with a high near 50. West wind 6 to 9 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.
Sunday Night
Partly cloudy, with a low around 33. Northwest wind 7 to 9 mph becoming southeast after midnight. Winds could gust as high as 16 mph.
Monday
Partly sunny, with a high near 58. Southwest wind 6 to 9 mph becoming east in the afternoon. Winds could gust as high as 15 mph.
Monday Night
Mostly cloudy, with a low around 37. Northeast wind 7 to 9 mph becoming northwest in the evening. Winds could gust as high as 17 mph.
Tuesday
Partly sunny, with a high near 57. Northwest wind 6 to 9 mph becoming southeast in the afternoon. Winds could gust as high as 23 mph.
Tuesday Night
Mostly cloudy, with a low around 43.
Wednesday
Mostly sunny, with a high near 71.
Wednesday Night
Partly cloudy, with a low around 33.
Thursday
Mostly sunny, with a high near 46.
Thursday Night
A slight chance of snow. Mostly cloudy, with a low around 23.
Friday
Mostly sunny, with a high near 45.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles WSW Mount Rushmore SD
 43.87°N 103.52°W (Elev. 6148 ft)
Last Update:
10:37 pm MDT Mar 20, 2026
Forecast Valid:
11pm MDT Mar 20, 2026-6pm MDT Mar 27, 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