National Weather Service Forecast for: Belle Fourche SD
Issued by: National Weather Service Rapid City, SD
Updated: 10:41 am MDT Oct 6, 2026
 
This
Afternoon
This Afternoon: Sunny, with a temperature falling to around 77 by 5pm. Northwest wind 10 to 14 mph, with gusts as high as 26 mph.
Sunny
 Tonight

Tonight: Mostly clear, with a low around 49. Northwest wind 5 to 9 mph becoming light and variable after midnight. Winds could gust as high as 16 mph.
Mostly Clear
 Wednesday

Wednesday: Sunny, with a high near 77. Calm wind becoming north 5 to 8 mph in the afternoon. Winds could gust as high as 17 mph.
Sunny
 Wednesday
Night
Wednesday Night: Mostly clear, with a low around 45. Northeast wind 5 to 8 mph becoming calm after midnight. Winds could gust as high as 16 mph.
Mostly Clear
 Thursday

Thursday: Sunny, with a high near 73. Calm wind becoming east 5 to 7 mph in the afternoon. Winds could gust as high as 17 mph.
Sunny
 Thursday
Night
Thursday Night: Partly cloudy, with a low around 48. East wind around 6 mph becoming calm after midnight. Winds could gust as high as 15 mph.
Partly Cloudy
 Friday

Friday: Sunny, with a high near 84.
Sunny
 Friday
Night
Friday Night: Mostly clear, with a low around 56.
Mostly Clear
 Saturday

Saturday: Sunny, with a high near 80.
Sunny
Hi 82 °F⇓ Lo 49 °F Hi 77 °F Lo 45 °F Hi 73 °F Lo 48 °F Hi 84 °F Lo 56 °F Hi 80 °F

 

This Afternoon
 
 Sunny, with a temperature falling to around 77 by 5pm. Northwest wind 10 to 14 mph, with gusts as high as 26 mph.
Tonight
 
 Mostly clear, with a low around 49. Northwest wind 5 to 9 mph becoming light and variable after midnight. Winds could gust as high as 16 mph.
Wednesday
 
 Sunny, with a high near 77. Calm wind becoming north 5 to 8 mph in the afternoon. Winds could gust as high as 17 mph.
Wednesday Night
 
 Mostly clear, with a low around 45. Northeast wind 5 to 8 mph becoming calm after midnight. Winds could gust as high as 16 mph.
Thursday
 
 Sunny, with a high near 73. Calm wind becoming east 5 to 7 mph in the afternoon. Winds could gust as high as 17 mph.
Thursday Night
 
 Partly cloudy, with a low around 48. East wind around 6 mph becoming calm after midnight. Winds could gust as high as 15 mph.
Friday
 
 Sunny, with a high near 84.
Friday Night
 
 Mostly clear, with a low around 56.
Saturday
 
 Sunny, with a high near 80.
Saturday Night
 
 A chance of rain, mainly after midnight. Mostly cloudy, with a low around 43.
Sunday
 
 A chance of rain. Mostly cloudy, with a high near 53.
Sunday Night
 
 Rain and snow likely. Mostly cloudy, with a low around 37.
Columbus Day
 
 A chance of rain and snow. Partly sunny, with a high near 52.

 

Forecast from NOAA-NWS for Belle Fourche SD.