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 NW Hill City SD

Red Flag Warning March 21, 04:59pm until March 21, 09:00pm
Click here for hazard details and duration
...
  •  
    Red Flag Warning March 21, 04:59pm until March 21, 09:00pm

    NOW until 9:00pm Sat

    Red Flag Warning

  • Tonight

    Low: 34 °F

    Slight Chance
    Showers then
    Chance
    Rain/Snow

  • Sunday

    Sunday: A chance of rain and snow showers before 10am, then a chance of rain showers between 10am and noon.  Mostly cloudy, then gradually becoming sunny, with a high near 52. Calm wind becoming west around 6 mph in the afternoon. Winds could gust as high as 21 mph.  Chance of precipitation is 50%. Little or no snow accumulation expected.

    High: 52 °F

    Chance
    Rain/Snow
    then Mostly
    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 32. Northwest wind around 5 mph becoming calm  in the evening. Winds could gust as high as 18 mph.

    Low: 32 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 60. Light and variable wind becoming south around 5 mph. Winds could gust as high as 17 mph.

    High: 60 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 37. Light and variable wind.

    Low: 37 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 61. Light and variable wind becoming west around 6 mph in the morning. Winds could gust as high as 21 mph.

    High: 61 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 41. Light and variable wind becoming west around 6 mph after midnight. Winds could gust as high as 18 mph.

    Low: 41 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 69. West wind 6 to 9 mph, with gusts as high as 25 mph.

    High: 69 °F

    Mostly Sunny

Detailed Forecast

Tonight
A chance of rain showers before 4am, then a chance of rain and snow showers. Mostly cloudy, with a low around 34. West wind 5 to 13 mph becoming northeast in the evening. Winds could gust as high as 28 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.
Sunday
A chance of rain and snow showers before 10am, then a chance of rain showers between 10am and noon. Mostly cloudy, then gradually becoming sunny, with a high near 52. Calm wind becoming west around 6 mph in the afternoon. Winds could gust as high as 21 mph. Chance of precipitation is 50%. Little or no snow accumulation expected.
Sunday Night
Partly cloudy, with a low around 32. Northwest wind around 5 mph becoming calm in the evening. Winds could gust as high as 18 mph.
Monday
Mostly sunny, with a high near 60. Light and variable wind becoming south around 5 mph. Winds could gust as high as 17 mph.
Monday Night
Partly cloudy, with a low around 37. Light and variable wind.
Tuesday
Partly sunny, with a high near 61. Light and variable wind becoming west around 6 mph in the morning. Winds could gust as high as 21 mph.
Tuesday Night
Mostly cloudy, with a low around 41. Light and variable wind becoming west around 6 mph after midnight. Winds could gust as high as 18 mph.
Wednesday
Mostly sunny, with a high near 69. West wind 6 to 9 mph, with gusts as high as 25 mph.
Wednesday Night
Partly cloudy, with a low around 35.
Thursday
Mostly sunny, with a high near 52.
Thursday Night
Mostly cloudy, with a low around 26.
Friday
Partly sunny, with a high near 46.
Friday Night
Mostly cloudy, with a low around 27.
Saturday
Partly sunny, with a high near 53.
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles NW Hill City SD
 43.97°N 103.65°W (Elev. 5568 ft)
3:32 pm MDT Mar 21, 2026
4pm 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