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

Autumn Temperatures for Eastern Third of the Country; Super Typhoon Approaching Guam

Cooler and less humid conditions for the eastern third of the nation as a cold slides off the east coast. Combination of dry and breezy conditions may result in spread of wildfires across the lower Mississippi Valley. In addition, fire weather conditions linger into portions of Southern California. For Guam, a super typhoon is approaching. Read More >

Current conditions at

Spearfish / Clyde Ice (KSPF)

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

Fair

77°F

25°C

Humidity 17%
Wind Speed E 5 mph
Barometer 30.01 in
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Heat Index77°F (25°C)
Last update 17 Oct 4:35 pm MDT
Extended Forecast for

9 Miles WNW Belle Fourche SD

  • Tonight

    Tonight: Partly cloudy, with a low around 45. South wind around 7 mph becoming northwest after midnight.

    Low: 45 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 66. West wind 5 to 9 mph becoming east in the afternoon. Winds could gust as high as 18 mph.

    High: 66 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 38. East wind 5 to 9 mph, with gusts as high as 17 mph.

    Low: 38 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 64. Breezy, with an east wind 5 to 10 mph increasing to 16 to 21 mph in the afternoon. Winds could gust as high as 32 mph.

    High: 64 °F

    Sunny then
    Sunny and
    Breezy

  • Monday Night

    Monday Night: Mostly clear, with a low around 43. East wind 13 to 18 mph becoming light south after midnight. Winds could gust as high as 30 mph.

    Low: 43 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 74. Calm wind becoming east 5 to 7 mph in the afternoon. Winds could gust as high as 17 mph.

    High: 74 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 44.

    Low: 44 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 67.

    High: 67 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 47.

    Low: 47 °F

    Mostly Clear

Detailed Forecast

Tonight
Partly cloudy, with a low around 45. South wind around 7 mph becoming northwest after midnight.
Sunday
Sunny, with a high near 66. West wind 5 to 9 mph becoming east in the afternoon. Winds could gust as high as 18 mph.
Sunday Night
Mostly clear, with a low around 38. East wind 5 to 9 mph, with gusts as high as 17 mph.
Monday
Sunny, with a high near 64. Breezy, with an east wind 5 to 10 mph increasing to 16 to 21 mph in the afternoon. Winds could gust as high as 32 mph.
Monday Night
Mostly clear, with a low around 43. East wind 13 to 18 mph becoming light south after midnight. Winds could gust as high as 30 mph.
Tuesday
Sunny, with a high near 74. Calm wind becoming east 5 to 7 mph in the afternoon. Winds could gust as high as 17 mph.
Tuesday Night
Mostly clear, with a low around 44.
Wednesday
Sunny, with a high near 67.
Wednesday Night
Mostly clear, with a low around 47.
Thursday
Mostly sunny, with a high near 79.
Thursday Night
A slight chance of rain. Mostly cloudy, with a low around 53.
Friday
A chance of rain. Partly sunny, with a high near 75.
Friday Night
Rain likely. Mostly cloudy, with a low around 47. Breezy.
Saturday
A chance of rain. Partly sunny, with a high near 57. Breezy.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
9 Miles WNW Belle Fourche SD
 44.73°N 103.99°W (Elev. 3097 ft)
Last Update:
3:26 pm MDT Oct 17, 2026
Forecast Valid:
4pm MDT Oct 17, 2026-6pm MDT Oct 24, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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