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 >

Current conditions at

Custer, Custer County Airport (KCUT)

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

Fair

57°F

14°C

Humidity 26%
Wind Speed W 6 mph
Barometer 30.00 in (1009.5 mb)
Dewpoint 22°F (-6°C)
Visibility 10.00 mi
Last update 21 Mar 2:53 am MDT
Extended Forecast for

5 Miles WSW Mount Rushmore SD

Red Flag Warning March 21, 03:29am until March 21, 09:00pm
Click here for hazard details and duration
Red Flag Warning
  •  
    Red Flag Warning March 21, 03:29am until March 21, 09:00pm

    NOW until 9:00pm Sat

    Red Flag Warning

  • Overnight

    Low: 54 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 76. West wind 10 to 15 mph, with gusts as high as 28 mph.

    High: 76 °F

    Sunny

  • Saturday Night

    Saturday Night: A chance of rain before 3am, then a chance of rain and snow between 3am and 4am, then a chance of snow after 4am.  Mostly cloudy, with a low around 37. Breezy, with an east wind 15 to 20 mph becoming north 9 to 14 mph after midnight. Winds could gust as high as 28 mph.  Chance of precipitation is 30%.

    Low: 37 °F

    Partly Cloudy
    and Breezy
    then Chance
    Rain/Snow

  • Sunday

    Sunday: A chance of snow before 11am, then a chance of rain between 11am and noon.  Mostly cloudy, then gradually becoming sunny, with a high near 50. Northwest wind around 7 mph, with gusts as high as 21 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 30. Northwest wind 6 to 8 mph becoming southeast after midnight. Winds could gust as high as 20 mph.

    Low: 30 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 59. Southwest wind 6 to 8 mph becoming north in the afternoon. Winds could gust as high as 18 mph.

    High: 59 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 36. Northeast wind 6 to 8 mph becoming northwest after midnight. Winds could gust as high as 17 mph.

    Low: 36 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 57. Northwest wind 8 to 10 mph becoming southeast in the afternoon. Winds could gust as high as 23 mph.

    High: 57 °F

    Partly Sunny

Detailed Forecast

Overnight
Mostly clear, with a steady temperature around 54. West wind around 10 mph, with gusts as high as 18 mph.
Saturday
Sunny, with a high near 76. West wind 10 to 15 mph, with gusts as high as 28 mph.
Saturday Night
A chance of rain before 3am, then a chance of rain and snow between 3am and 4am, then a chance of snow after 4am. Mostly cloudy, with a low around 37. Breezy, with an east wind 15 to 20 mph becoming north 9 to 14 mph after midnight. Winds could gust as high as 28 mph. Chance of precipitation is 30%.
Sunday
A chance of snow before 11am, then a chance of rain between 11am and noon. Mostly cloudy, then gradually becoming sunny, with a high near 50. Northwest wind around 7 mph, with gusts as high as 21 mph. Chance of precipitation is 30%.
Sunday Night
Partly cloudy, with a low around 30. Northwest wind 6 to 8 mph becoming southeast after midnight. Winds could gust as high as 20 mph.
Monday
Mostly sunny, with a high near 59. Southwest wind 6 to 8 mph becoming north in the afternoon. Winds could gust as high as 18 mph.
Monday Night
Mostly cloudy, with a low around 36. Northeast wind 6 to 8 mph becoming northwest after midnight. Winds could gust as high as 17 mph.
Tuesday
Partly sunny, with a high near 57. Northwest wind 8 to 10 mph becoming southeast in the afternoon. Winds could gust as high as 23 mph.
Tuesday Night
Mostly cloudy, with a low around 39.
Wednesday
Partly sunny, with a high near 66.
Wednesday Night
Mostly cloudy, with a low around 32.
Thursday
A slight chance of snow. Partly sunny, with a high near 51.
Thursday Night
A slight chance of snow. Mostly cloudy, with a low around 24.
Friday
Partly sunny, with a high near 47.
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles WSW Mount Rushmore SD
 43.85°N 103.55°W (Elev. 6490 ft)
12:32 am MDT Mar 21, 2026
3am MDT Mar 21, 2026-6pm MDT Mar 27, 2026
 
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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