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

76°F

24°C

Humidity 9%
Wind Speed W 15 G 40 mph
Barometer 29.76 in (1000.5 mb)
Dewpoint 14°F (-10°C)
Visibility 10.00 mi
Heat Index75°F (24°C)
Last update 21 Mar 4:53 pm MDT
Extended Forecast for

5 Miles E Custer County Airport SD

Red Flag Warning March 21, 05:09pm until March 21, 09:00pm
Click here for hazard details and duration
...
  •  
    Red Flag Warning March 21, 05:09pm until March 21, 09:00pm

    NOW until 9:00pm Sat

    Red Flag Warning

  • Tonight

    Low: 37 °F

    Chance
    Showers and
    Breezy

  • Sunday

    Sunday: A chance of rain and snow showers before 9am, then a chance of rain showers between 9am and noon.  Mostly cloudy, then gradually becoming sunny, with a high near 54. Light and variable wind becoming west 5 to 7 mph in the morning. Winds could gust as high as 21 mph.  Chance of precipitation is 40%. Little or no snow accumulation expected.

    High: 54 °F

    Chance
    Rain/Snow
    then Mostly
    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 34. Northwest wind 5 to 7 mph becoming east after midnight. Winds could gust as high as 17 mph.

    Low: 34 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 61. Southeast wind 5 to 7 mph becoming south in the afternoon. Winds could gust as high as 17 mph.

    High: 61 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 39. East wind around 6 mph becoming northwest after midnight. Winds could gust as high as 16 mph.

    Low: 39 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 62. Northwest wind 6 to 8 mph becoming northeast in the morning. Winds could gust as high as 22 mph.

    High: 62 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 42. East wind 6 to 9 mph becoming west after midnight. Winds could gust as high as 21 mph.

    Low: 42 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 71. West wind 7 to 11 mph, with gusts as high as 26 mph.

    High: 71 °F

    Mostly Sunny

Detailed Forecast

Tonight
A 30 percent chance of showers, mainly after midnight. Mostly cloudy, with a low around 37. Breezy, with a northeast wind 15 to 20 mph becoming north 7 to 12 mph after midnight. Winds could gust as high as 29 mph.
Sunday
A chance of rain and snow showers before 9am, then a chance of rain showers between 9am and noon. Mostly cloudy, then gradually becoming sunny, with a high near 54. Light and variable wind becoming west 5 to 7 mph in the morning. Winds could gust as high as 21 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.
Sunday Night
Partly cloudy, with a low around 34. Northwest wind 5 to 7 mph becoming east after midnight. Winds could gust as high as 17 mph.
Monday
Mostly sunny, with a high near 61. Southeast wind 5 to 7 mph becoming south in the afternoon. Winds could gust as high as 17 mph.
Monday Night
Partly cloudy, with a low around 39. East wind around 6 mph becoming northwest after midnight. Winds could gust as high as 16 mph.
Tuesday
Partly sunny, with a high near 62. Northwest wind 6 to 8 mph becoming northeast in the morning. Winds could gust as high as 22 mph.
Tuesday Night
Mostly cloudy, with a low around 42. East wind 6 to 9 mph becoming west after midnight. Winds could gust as high as 21 mph.
Wednesday
Mostly sunny, with a high near 71. West wind 7 to 11 mph, with gusts as high as 26 mph.
Wednesday Night
Partly cloudy, with a low around 37.
Thursday
Mostly sunny, with a high near 55.
Thursday Night
Mostly cloudy, with a low around 28.
Friday
Partly sunny, with a high near 49.
Friday Night
Mostly cloudy, with a low around 28.
Saturday
Partly sunny, with a high near 54.
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles E Custer County Airport SD
 43.72°N 103.54°W (Elev. 5351 ft)
3:32 pm MDT Mar 21, 2026
5pm MDT Mar 21, 2026-6pm MDT Mar 28, 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