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

73°F

23°C

Humidity 25%
Wind Speed E 13 G 18 mph
Barometer 29.74 in
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Last update 21 Mar 1:55 pm MDT
Extended Forecast for

4 Miles SSW Lead SD

Red Flag Warning March 21, 02:08pm until March 21, 09:00pm
Click here for hazard details and duration
Red Flag Warning
  •  
    Red Flag Warning March 21, 02:08pm until March 21, 09:00pm

    NOW until 9:00pm Sat

    Red Flag Warning

  • This Afternoon

    High: 77 °F

    Mostly Sunny

  • Tonight

    Tonight: Rain likely, possibly mixed with snow showers, becoming all snow after 5am.  Mostly cloudy, with a low around 31. Northeast wind 6 to 11 mph becoming light and variable  after midnight. Winds could gust as high as 23 mph.  Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    Low: 31 °F

    Chance
    Showers then
    Rain/Snow
    Likely

  • Sunday

    Sunday: A chance of snow showers, mixing with rain after 10am, then gradually ending.  Cloudy through mid morning, then gradual clearing, with a high near 50. Calm wind becoming west 5 to 7 mph in the afternoon. Winds could gust as high as 23 mph.  Chance of precipitation is 50%. Little or no snow accumulation expected.

    High: 50 °F

    Chance
    Rain/Snow
    then Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 30. Northwest wind around 6 mph becoming calm  in the evening. Winds could gust as high as 21 mph.

    Low: 30 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 58. Calm wind becoming west around 5 mph. Winds could gust as high as 15 mph.

    High: 58 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 35. Light and variable wind.

    Low: 35 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 59. Calm wind becoming northwest 5 to 7 mph in the afternoon. Winds could gust as high as 21 mph.

    High: 59 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 40. North wind around 6 mph becoming south in the evening. Winds could gust as high as 18 mph.

    Low: 40 °F

    Mostly Cloudy

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 77. Southwest wind around 10 mph, with gusts as high as 23 mph.
Tonight
Rain likely, possibly mixed with snow showers, becoming all snow after 5am. Mostly cloudy, with a low around 31. Northeast wind 6 to 11 mph becoming light and variable after midnight. Winds could gust as high as 23 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Sunday
A chance of snow showers, mixing with rain after 10am, then gradually ending. Cloudy through mid morning, then gradual clearing, with a high near 50. Calm wind becoming west 5 to 7 mph in the afternoon. Winds could gust as high as 23 mph. Chance of precipitation is 50%. Little or no snow accumulation expected.
Sunday Night
Partly cloudy, with a low around 30. Northwest wind around 6 mph becoming calm in the evening. Winds could gust as high as 21 mph.
Monday
Mostly sunny, with a high near 58. Calm wind becoming west around 5 mph. Winds could gust as high as 15 mph.
Monday Night
Mostly cloudy, with a low around 35. Light and variable wind.
Tuesday
Mostly cloudy, with a high near 59. Calm wind becoming northwest 5 to 7 mph in the afternoon. Winds could gust as high as 21 mph.
Tuesday Night
Mostly cloudy, with a low around 40. North wind around 6 mph becoming south in the evening. Winds could gust as high as 18 mph.
Wednesday
Mostly sunny, with a high near 65.
Wednesday Night
Mostly cloudy, with a low around 33.
Thursday
Partly sunny, with a high near 48.
Thursday Night
A slight chance of snow. Mostly cloudy, with a low around 24.
Friday
Partly sunny, with a high near 46.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SSW Lead SD
 44.29°N 103.8°W (Elev. 5761 ft)
12:37 pm MDT Mar 21, 2026
2pm 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