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

Heavy to Excessive Rains in The Four Corners Region and Midwest; Heat Persists in the South-Central U.S.

Repeated rounds of showers and thunderstorms could bring a flash flooding threat across the Four Corners region and from the mid-Mississippi Valley into the lower Great Lakes. Hot temperatures and high humidity will continue to challenge daily records from the Southern Plains to the lower Mississippi Valley. Read More >

Current conditions at

Spearfish / Clyde Ice (KSPF)

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

Fair

52°F

11°C

Humidity 72%
Wind Speed SE 8 mph
Barometer 30.10 in
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Wind Chill49°F (9°C)
Last update 16 Sep 5:55 am MDT
Extended Forecast for

Belle Fourche SD

  • Today

    Today: Mostly sunny, with a high near 84. East wind 6 to 13 mph becoming northwest in the afternoon. Winds could gust as high as 24 mph.

    High: 84 °F

    Mostly Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 47. North wind 8 to 13 mph becoming light northwest after midnight. Winds could gust as high as 22 mph.

    Low: 47 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Showers likely and possibly a thunderstorm, mainly after 3pm. Cloudy, with a high near 72. Breezy, with a light northeast wind becoming east 17 to 22 mph in the morning. Winds could gust as high as 33 mph. Chance of precipitation is 60%.

    High: 72 °F

    Mostly Cloudy
    then Showers
    Likely and
    Breezy

  • Thursday Night

    Thursday Night: Showers likely, mainly before midnight. Cloudy, with a low around 54. Breezy, with an east wind 15 to 20 mph decreasing to 7 to 12 mph after midnight. Winds could gust as high as 31 mph. Chance of precipitation is 60%.

    Low: 54 °F

    Showers
    Likely and
    Breezy then
    Slight Chance
    Showers

  • Friday

    Friday: Partly sunny, with a high near 77. East wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 26 mph.

    High: 77 °F

    Partly Sunny

  • Friday Night

    Friday Night: A chance of showers before 9pm, then a chance of showers and thunderstorms between 9pm and midnight, then showers and possibly a thunderstorm after midnight. Low around 52. East wind 13 to 18 mph decreasing to 6 to 11 mph after midnight. Winds could gust as high as 28 mph. Chance of precipitation is 80%.

    Low: 52 °F

    Chance
    T-storms then
    Showers

  • Saturday

    Saturday: Showers likely, with thunderstorms also possible after noon. Mostly cloudy, with a high near 71. Chance of precipitation is 70%.

    High: 71 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 49.

    Low: 49 °F

    Showers
    Likely

  • Sunday

    Sunday: Showers likely and possibly a thunderstorm. Partly sunny, with a high near 70.

    High: 70 °F

    Showers
    Likely

Detailed Forecast

Today
Mostly sunny, with a high near 84. East wind 6 to 13 mph becoming northwest in the afternoon. Winds could gust as high as 24 mph.
Tonight
Increasing clouds, with a low around 47. North wind 8 to 13 mph becoming light northwest after midnight. Winds could gust as high as 22 mph.
Thursday
Showers likely and possibly a thunderstorm, mainly after 3pm. Cloudy, with a high near 72. Breezy, with a light northeast wind becoming east 17 to 22 mph in the morning. Winds could gust as high as 33 mph. Chance of precipitation is 60%.
Thursday Night
Showers likely, mainly before midnight. Cloudy, with a low around 54. Breezy, with an east wind 15 to 20 mph decreasing to 7 to 12 mph after midnight. Winds could gust as high as 31 mph. Chance of precipitation is 60%.
Friday
Partly sunny, with a high near 77. East wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 26 mph.
Friday Night
A chance of showers before 9pm, then a chance of showers and thunderstorms between 9pm and midnight, then showers and possibly a thunderstorm after midnight. Low around 52. East wind 13 to 18 mph decreasing to 6 to 11 mph after midnight. Winds could gust as high as 28 mph. Chance of precipitation is 80%.
Saturday
Showers likely, with thunderstorms also possible after noon. Mostly cloudy, with a high near 71. Chance of precipitation is 70%.
Saturday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 49.
Sunday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 70.
Sunday Night
A chance of showers and thunderstorms before midnight, then a slight chance of showers. Partly cloudy, with a low around 46.
Monday
A slight chance of showers. Mostly sunny, with a high near 74.
Monday Night
Mostly clear, with a low around 46.
Tuesday
Mostly sunny, with a high near 78.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Belle Fourche SD
 44.67°N 103.86°W (Elev. 3025 ft)
Last Update:
5:56 am MDT Sep 16, 2026
Forecast Valid:
6am MDT Sep 16, 2026-6pm MDT Sep 22, 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