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

Early Spring Heat Wave in the Southwest U.S.; Critical Fire Weather in the Central Rockies and Plains

An unusual early Spring heat wave will continue much above-normal temperatures over the Southwest U.S. through early next week. Many locations are likely to set records for the highest-ever March temperature. Periods of critical fire weather will persist from the central Rockies to the central Plains through Saturday as gusty winds and low relative humidity continue. Read More >

Hazardous Weather Conditions

Current conditions at

Spearfish / Clyde Ice (KSPF)

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

Fair and Breezy

79°F

26°C

Humidity 12%
Wind Speed W 25 G 33 mph
Barometer 29.98 in
Dewpoint 21°F (-6°C)
Visibility 9.00 mi
Heat Index78°F (26°C)
Last update 19 Mar 3:15 pm MDT
Extended Forecast for

Spearfish SD

Red Flag Warning March 19, 03:27pm until March 19, 07:00pm
Click here for hazard details and duration
...
  •  
    Red Flag Warning March 19, 03:27pm until March 19, 07:00pm

    NOW until 7:00pm Thu

    Red Flag Warning

  • Tonight

    Low: 53 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 80. West wind 7 to 14 mph, with gusts as high as 23 mph.

    High: 80 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 57. West wind 6 to 10 mph becoming southwest after midnight. Winds could gust as high as 16 mph.

    Low: 57 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 86. Southwest wind 7 to 16 mph becoming northwest in the afternoon. Winds could gust as high as 24 mph.

    High: 86 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A 40 percent chance of showers after midnight. Mostly cloudy, with a low around 44. Northwest wind 11 to 17 mph, with gusts as high as 24 mph.

    Low: 44 °F

    Mostly Cloudy
    then Chance
    Showers

  • Sunday

    Sunday: A 20 percent chance of showers before noon. Mostly sunny, with a high near 56. Northwest wind 10 to 15 mph, with gusts as high as 21 mph.

    High: 56 °F

    Slight Chance
    Showers then
    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 37. Northwest wind 5 to 9 mph becoming southeast after midnight. Winds could gust as high as 16 mph.

    Low: 37 °F

    Partly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 62. Light and variable wind becoming north 5 to 7 mph in the afternoon. Winds could gust as high as 15 mph.

    High: 62 °F

    Partly Sunny

Detailed Forecast

Tonight
Mostly clear, with a low around 53. West wind 6 to 10 mph, with gusts as high as 21 mph.
Friday
Sunny, with a high near 80. West wind 7 to 14 mph, with gusts as high as 23 mph.
Friday Night
Mostly clear, with a low around 57. West wind 6 to 10 mph becoming southwest after midnight. Winds could gust as high as 16 mph.
Saturday
Mostly sunny, with a high near 86. Southwest wind 7 to 16 mph becoming northwest in the afternoon. Winds could gust as high as 24 mph.
Saturday Night
A 40 percent chance of showers after midnight. Mostly cloudy, with a low around 44. Northwest wind 11 to 17 mph, with gusts as high as 24 mph.
Sunday
A 20 percent chance of showers before noon. Mostly sunny, with a high near 56. Northwest wind 10 to 15 mph, with gusts as high as 21 mph.
Sunday Night
Partly cloudy, with a low around 37. Northwest wind 5 to 9 mph becoming southeast after midnight. Winds could gust as high as 16 mph.
Monday
Partly sunny, with a high near 62. Light and variable wind becoming north 5 to 7 mph in the afternoon. Winds could gust as high as 15 mph.
Monday Night
Mostly cloudy, with a low around 40.
Tuesday
Mostly cloudy, with a high near 65.
Tuesday Night
Mostly cloudy, with a low around 50.
Wednesday
Partly sunny, with a high near 74.
Wednesday Night
A chance of rain and snow. Mostly cloudy, with a low around 35.
Thursday
A chance of snow. Mostly sunny, with a high near 47. Breezy.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Spearfish SD
 44.48°N 103.85°W (Elev. 3780 ft)
Last Update:
2:49 pm MDT Mar 19, 2026
Forecast Valid:
3pm MDT Mar 19, 2026-6pm MDT Mar 26, 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