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

61°F

16°C

Humidity 83%
Wind Speed S 8 mph
Barometer 30.28 in
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 16 Aug 12:15 am MDT
Extended Forecast for

Belle Fourche SD

  • Overnight

    Overnight: Partly cloudy, with a low around 54. Calm wind.

    Low: 54 °F

    Partly Cloudy

  • Sunday

    Sunday: Scattered showers and thunderstorms, mainly after noon. Mostly sunny, with a high near 83. Calm wind becoming east around 6 mph in the morning. Winds could gust as high as 16 mph. Chance of precipitation is 40%.

    High: 83 °F

    Scattered
    T-storms

  • Sunday Night

    Sunday Night: A 20 percent chance of showers and thunderstorms before 9pm. Partly cloudy, with a low around 57. East wind around 6 mph becoming light and variable. Winds could gust as high as 16 mph.

    Low: 57 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 86. West wind 5 to 7 mph becoming north in the afternoon. Winds could gust as high as 21 mph.

    High: 86 °F

    Sunny

  • Monday Night

    Monday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 56. Northeast wind 5 to 7 mph becoming light and variable in the evening. Winds could gust as high as 18 mph.

    Low: 56 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms, mainly after noon. Mostly cloudy, with a high near 81. Calm wind becoming east 5 to 7 mph in the afternoon. Winds could gust as high as 18 mph.

    High: 81 °F

    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 40 percent chance of showers and thunderstorms, mainly before midnight. Mostly cloudy, with a low around 53.

    Low: 53 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: A chance of showers and thunderstorms, mainly after noon. Mostly sunny, with a high near 84.

    High: 84 °F

    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A slight chance of showers and thunderstorms before midnight. Mostly clear, with a low around 55.

    Low: 55 °F

    Slight Chance
    T-storms then
    Mostly Clear

Detailed Forecast

Overnight
Partly cloudy, with a low around 54. Calm wind.
Sunday
Scattered showers and thunderstorms, mainly after noon. Mostly sunny, with a high near 83. Calm wind becoming east around 6 mph in the morning. Winds could gust as high as 16 mph. Chance of precipitation is 40%.
Sunday Night
A 20 percent chance of showers and thunderstorms before 9pm. Partly cloudy, with a low around 57. East wind around 6 mph becoming light and variable. Winds could gust as high as 16 mph.
Monday
Sunny, with a high near 86. West wind 5 to 7 mph becoming north in the afternoon. Winds could gust as high as 21 mph.
Monday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 56. Northeast wind 5 to 7 mph becoming light and variable in the evening. Winds could gust as high as 18 mph.
Tuesday
A 30 percent chance of showers and thunderstorms, mainly after noon. Mostly cloudy, with a high near 81. Calm wind becoming east 5 to 7 mph in the afternoon. Winds could gust as high as 18 mph.
Tuesday Night
A 40 percent chance of showers and thunderstorms, mainly before midnight. Mostly cloudy, with a low around 53.
Wednesday
A chance of showers and thunderstorms, mainly after noon. Mostly sunny, with a high near 84.
Wednesday Night
A slight chance of showers and thunderstorms before midnight. Mostly clear, with a low around 55.
Thursday
Sunny, with a high near 89.
Thursday Night
Mostly clear, with a low around 57.
Friday
Sunny, with a high near 89.
Friday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 59.
Saturday
A slight chance of showers and thunderstorms. Sunny, with a high near 90.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Belle Fourche SD
 44.67°N 103.86°W (Elev. 3025 ft)
Last Update:
11:41 pm MDT Aug 15, 2026
Forecast Valid:
12am MDT Aug 16, 2026-6pm MDT Aug 22, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation