National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

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 >

Hazardous Weather Conditions

Current conditions at

Spearfish / Clyde Ice (KSPF)

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

Fair

68°F

20°C

Humidity 24%
Wind Speed Calm
Barometer 29.88 in
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Last update 21 Mar 9:35 am MDT
Extended Forecast for

4 Miles WSW Lead SD

Red Flag Warning March 21, 09:50am until March 21, 09:00pm
Click here for hazard details and duration
Red Flag Warning
  •  
    Red Flag Warning March 21, 09:50am until March 21, 09:00pm

    NOW until 9:00pm Sat

    Red Flag Warning

  • Today

    High: 73 °F

    Sunny

  • Tonight

    Tonight: A slight chance of rain before midnight, then a chance of rain and snow between midnight and 2am, then a chance of snow after 2am. Mostly cloudy, with a low around 34. East wind 12 to 17 mph becoming northwest 6 to 11 mph after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 50%. Little or no snow accumulation expected.

    Low: 34 °F

    Slight Chance
    Rain then
    Chance
    Rain/Snow

  • Sunday

    Sunday: A 50 percent chance of snow, mainly before noon. Mostly cloudy, then gradually becoming sunny, with a high near 48. Northwest wind 6 to 10 mph, with gusts as high as 23 mph. New snow accumulation of less than a half inch possible.

    High: 48 °F

    Chance Snow
    then Slight
    Chance Snow

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 31. Northwest wind 6 to 10 mph becoming southeast in the evening. Winds could gust as high as 20 mph.

    Low: 31 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 55. South wind 6 to 8 mph becoming north in the afternoon. Winds could gust as high as 17 mph.

    High: 55 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 35. North wind around 7 mph becoming southwest in the evening. Winds could gust as high as 15 mph.

    Low: 35 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 55. Southwest wind 6 to 10 mph becoming north in the afternoon. Winds could gust as high as 22 mph.

    High: 55 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 41. East wind around 9 mph becoming west after midnight. Winds could gust as high as 21 mph.

    Low: 41 °F

    Mostly Cloudy

Detailed Forecast

Today
Sunny, with a high near 73. West wind 7 to 15 mph becoming southeast in the afternoon. Winds could gust as high as 25 mph.
Tonight
A slight chance of rain before midnight, then a chance of rain and snow between midnight and 2am, then a chance of snow after 2am. Mostly cloudy, with a low around 34. East wind 12 to 17 mph becoming northwest 6 to 11 mph after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 50%. Little or no snow accumulation expected.
Sunday
A 50 percent chance of snow, mainly before noon. Mostly cloudy, then gradually becoming sunny, with a high near 48. Northwest wind 6 to 10 mph, with gusts as high as 23 mph. New snow accumulation of less than a half inch possible.
Sunday Night
Partly cloudy, with a low around 31. Northwest wind 6 to 10 mph becoming southeast in the evening. Winds could gust as high as 20 mph.
Monday
Mostly sunny, with a high near 55. South wind 6 to 8 mph becoming north in the afternoon. Winds could gust as high as 17 mph.
Monday Night
Mostly cloudy, with a low around 35. North wind around 7 mph becoming southwest in the evening. Winds could gust as high as 15 mph.
Tuesday
Partly sunny, with a high near 55. Southwest wind 6 to 10 mph becoming north in the afternoon. Winds could gust as high as 22 mph.
Tuesday Night
Mostly cloudy, with a low around 41. East wind around 9 mph becoming west after midnight. Winds could gust as high as 21 mph.
Wednesday
Partly sunny, with a high near 63.
Wednesday Night
A slight chance of rain and snow. Mostly cloudy, with a low around 31.
Thursday
A chance of snow. Partly sunny, with a high near 45.
Thursday Night
A slight chance of snow. Mostly cloudy, with a low around 24.
Friday
Partly sunny, with a high near 45.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles WSW Lead SD
 44.33°N 103.83°W (Elev. 6398 ft)
Last Update:
9:42 am MDT Mar 21, 2026
Forecast Valid:
9am MDT Mar 21, 2026-6pm MDT Mar 27, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation