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

Spearfish / Clyde Ice (KSPF)

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

Fair

64°F

18°C

Humidity 94%
Wind Speed E 17 mph
Barometer 30.03 in
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Last update 13 Aug 7:55 pm MDT
Extended Forecast for

Belle Fourche SD

  • Tonight

    Tonight: A slight chance of showers and thunderstorms before midnight, then a chance of showers between midnight and 3am, then a chance of showers and thunderstorms after 3am. Mostly cloudy, with a low around 59. East wind 9 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 50%.

    Low: 59 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Friday

    Friday: A chance of showers, with thunderstorms also possible after noon. Partly sunny, with a high near 79. Southeast wind 8 to 11 mph becoming northwest in the morning. Winds could gust as high as 22 mph. Chance of precipitation is 50%.

    High: 79 °F

    Chance
    Showers then
    Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms, then showers likely after midnight. Mostly cloudy, with a low around 55. Northwest wind 5 to 11 mph becoming southwest after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 60%.

    Low: 55 °F

    Chance
    T-storms then
    Showers
    Likely

  • Saturday

    Saturday: A chance of showers, with thunderstorms also possible after noon. Partly sunny, with a high near 77. West wind 5 to 9 mph becoming northeast in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 40%.

    High: 77 °F

    Chance
    Showers then
    Slight Chance
    T-storms

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 52. Northeast wind 5 to 9 mph becoming calm in the evening. Winds could gust as high as 17 mph. Chance of precipitation is 40%.

    Low: 52 °F

    Chance
    T-storms then
    Chance
    Showers

  • Sunday

    Sunday: A chance of showers before 9am, then a chance of showers and thunderstorms between 9am and noon, then showers likely and possibly a thunderstorm after noon. Mostly sunny, with a high near 80. Calm wind becoming east 5 to 9 mph in the morning. Winds could gust as high as 17 mph. Chance of precipitation is 60%.

    High: 80 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 54.

    Low: 54 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 86.

    High: 86 °F

    Mostly Sunny

  • Monday Night

    Monday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 55.

    Low: 55 °F

    Chance
    T-storms then
    Chance
    Showers

Detailed Forecast

Tonight
A slight chance of showers and thunderstorms before midnight, then a chance of showers between midnight and 3am, then a chance of showers and thunderstorms after 3am. Mostly cloudy, with a low around 59. East wind 9 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 50%.
Friday
A chance of showers, with thunderstorms also possible after noon. Partly sunny, with a high near 79. Southeast wind 8 to 11 mph becoming northwest in the morning. Winds could gust as high as 22 mph. Chance of precipitation is 50%.
Friday Night
A chance of showers and thunderstorms, then showers likely after midnight. Mostly cloudy, with a low around 55. Northwest wind 5 to 11 mph becoming southwest after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 60%.
Saturday
A chance of showers, with thunderstorms also possible after noon. Partly sunny, with a high near 77. West wind 5 to 9 mph becoming northeast in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 40%.
Saturday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 52. Northeast wind 5 to 9 mph becoming calm in the evening. Winds could gust as high as 17 mph. Chance of precipitation is 40%.
Sunday
A chance of showers before 9am, then a chance of showers and thunderstorms between 9am and noon, then showers likely and possibly a thunderstorm after noon. Mostly sunny, with a high near 80. Calm wind becoming east 5 to 9 mph in the morning. Winds could gust as high as 17 mph. Chance of precipitation is 60%.
Sunday Night
Mostly clear, with a low around 54.
Monday
Mostly sunny, with a high near 86.
Monday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 55.
Tuesday
A chance of showers and thunderstorms after noon. Partly sunny, with a high near 82.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 53.
Wednesday
A chance of showers and thunderstorms. Partly sunny, with a high near 82.
Wednesday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 54.
Thursday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 85.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Belle Fourche SD
 44.65°N 103.86°W (Elev. 3146 ft)
Last Update:
5:46 pm MDT Aug 13, 2026
Forecast Valid:
8pm MDT Aug 13, 2026-6pm MDT Aug 20, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation