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

Spearfish / Clyde Ice (KSPF)

Lat: 44.48°NLon: 103.78°WElev: 3898ft.

Fair

79°F

26°C

Humidity 16%
Wind Speed W 14 mph
Barometer 29.97 in
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 20 Mar 5:15 pm MDT
Extended Forecast for

Belle Fourche SD

Red Flag Warning March 20, 05:22pm until March 20, 09:00pm
Click here for hazard details and duration
...
  •  
    Red Flag Warning March 20, 05:22pm until March 20, 09:00pm

    NOW until 9:00pm Fri

    Red Flag Warning

  • Tonight

    Low: 47 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 85. Breezy, with a light and variable wind becoming northeast 16 to 21 mph in the morning. Winds could gust as high as 29 mph.

    High: 85 °F

    Sunny then
    Mostly Sunny
    and Breezy

  • Saturday Night

    Saturday Night: A 50 percent chance of showers after midnight.  Mostly cloudy, with a low around 38. Breezy, with a northeast wind 16 to 21 mph becoming northwest 6 to 11 mph after midnight. Winds could gust as high as 29 mph.

    Low: 38 °F

    Mostly Cloudy
    and Breezy
    then Chance
    Showers

  • Sunday

    Sunday: A 30 percent chance of showers before noon.  Partly sunny, with a high near 58. Northwest wind 5 to 14 mph, with gusts as high as 20 mph.

    High: 58 °F

    Chance
    Showers then
    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 31. North wind 6 to 11 mph becoming light and variable  after midnight. Winds could gust as high as 18 mph.

    Low: 31 °F

    Partly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 66. Calm wind becoming northeast 5 to 8 mph in the afternoon.

    High: 66 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 35. East wind 6 to 10 mph, with gusts as high as 15 mph.

    Low: 35 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 65. East wind 8 to 15 mph, with gusts as high as 22 mph.

    High: 65 °F

    Partly Sunny

Detailed Forecast

Tonight
Mostly clear, with a low around 47. Southwest wind 7 to 10 mph, with gusts as high as 16 mph.
Saturday
Sunny, with a high near 85. Breezy, with a light and variable wind becoming northeast 16 to 21 mph in the morning. Winds could gust as high as 29 mph.
Saturday Night
A 50 percent chance of showers after midnight. Mostly cloudy, with a low around 38. Breezy, with a northeast wind 16 to 21 mph becoming northwest 6 to 11 mph after midnight. Winds could gust as high as 29 mph.
Sunday
A 30 percent chance of showers before noon. Partly sunny, with a high near 58. Northwest wind 5 to 14 mph, with gusts as high as 20 mph.
Sunday Night
Partly cloudy, with a low around 31. North wind 6 to 11 mph becoming light and variable after midnight. Winds could gust as high as 18 mph.
Monday
Partly sunny, with a high near 66. Calm wind becoming northeast 5 to 8 mph in the afternoon.
Monday Night
Mostly cloudy, with a low around 35. East wind 6 to 10 mph, with gusts as high as 15 mph.
Tuesday
Partly sunny, with a high near 65. East wind 8 to 15 mph, with gusts as high as 22 mph.
Tuesday Night
Mostly cloudy, with a low around 40.
Wednesday
Mostly sunny, with a high near 80.
Wednesday Night
Mostly cloudy, with a low around 35.
Thursday
Partly sunny, with a high near 52. Breezy.
Thursday Night
Partly cloudy, with a low around 24. Blustery.
Friday
Mostly sunny, with a high near 54.
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ABOUT THIS FORECAST

 
Point Forecast:
Belle Fourche SD
 44.67°N 103.86°W (Elev. 3025 ft)
3:28 pm MDT Mar 20, 2026
5pm MDT Mar 20, 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