National Weather Service Forecast for: Belle Fourche SD
Issued by: National Weather Service Rapid City, SD
Updated: 8:07 pm MDT Jun 18, 2026
 
Tonight

Tonight: A slight chance of showers and thunderstorms between 10pm and midnight, then a slight chance of showers after midnight.  Mostly cloudy, with a low around 50. West wind around 6 mph.  Chance of precipitation is 20%.
Slight Chance
T-storms then
Slight Chance
Showers
Juneteenth

Juneteenth: Mostly sunny, with a high near 75. Northwest wind 7 to 14 mph, with gusts as high as 21 mph.
Mostly Sunny


Friday
Night
Friday Night: A 20 percent chance of showers after midnight.  Cloudy during the early evening, then gradual clearing, with a low around 50. North wind 7 to 13 mph becoming southeast after midnight. Winds could gust as high as 18 mph.
Mostly Cloudy
then Slight
Chance
Showers
Saturday

Saturday: A slight chance of showers, then a chance of showers and thunderstorms after noon.  Partly sunny, with a high near 79. Breezy, with an east wind 14 to 24 mph, with gusts as high as 38 mph.  Chance of precipitation is 40%.
Breezy.
Slight Chance
Showers then
Chance
T-storms
Saturday
Night
Saturday Night: Showers and possibly a thunderstorm.  Low around 51. Breezy, with an east wind 18 to 23 mph decreasing to 8 to 13 mph after midnight. Winds could gust as high as 34 mph.  Chance of precipitation is 80%.
Showers and
Breezy

Sunday

Sunday: Showers and possibly a thunderstorm.  High near 68. East wind 7 to 13 mph, with gusts as high as 23 mph.  Chance of precipitation is 90%.
Showers


Sunday
Night
Sunday Night: A chance of showers and thunderstorms.  Mostly cloudy, with a low around 47. Chance of precipitation is 40%.
Chance
T-storms then
Chance
Showers
Monday

Monday: A chance of showers, then showers and possibly a thunderstorm after noon.  Partly sunny, with a high near 70.
Showers


Monday
Night
Monday Night: A chance of showers and thunderstorms before midnight, then a slight chance of showers.  Partly cloudy, with a low around 46.
Chance
T-storms then
Slight Chance
Showers
Lo 50 °F Hi 75 °F Lo 50 °F Hi 79 °F Lo 51 °F Hi 68 °F Lo 47 °F Hi 70 °F Lo 46 °F

 

Tonight
 
A slight chance of showers and thunderstorms between 10pm and midnight, then a slight chance of showers after midnight. Mostly cloudy, with a low around 50. West wind around 6 mph. Chance of precipitation is 20%.
Juneteenth
 
Mostly sunny, with a high near 75. Northwest wind 7 to 14 mph, with gusts as high as 21 mph.
Friday Night
 
A 20 percent chance of showers after midnight. Cloudy during the early evening, then gradual clearing, with a low around 50. North wind 7 to 13 mph becoming southeast after midnight. Winds could gust as high as 18 mph.
Saturday
 
A slight chance of showers, then a chance of showers and thunderstorms after noon. Partly sunny, with a high near 79. Breezy, with an east wind 14 to 24 mph, with gusts as high as 38 mph. Chance of precipitation is 40%.
Saturday Night
 
Showers and possibly a thunderstorm. Low around 51. Breezy, with an east wind 18 to 23 mph decreasing to 8 to 13 mph after midnight. Winds could gust as high as 34 mph. Chance of precipitation is 80%.
Sunday
 
Showers and possibly a thunderstorm. High near 68. East wind 7 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 90%.
Sunday Night
 
A chance of showers and thunderstorms. Mostly cloudy, with a low around 47. Chance of precipitation is 40%.
Monday
 
A chance of showers, then showers and possibly a thunderstorm after noon. Partly sunny, with a high near 70.
Monday Night
 
A chance of showers and thunderstorms before midnight, then a slight chance of showers. Partly cloudy, with a low around 46.
Tuesday
 
Sunny, with a high near 73.
Tuesday Night
 
Mostly clear, with a low around 46.
Wednesday
 
A slight chance of showers and thunderstorms. Sunny, with a high near 76.
Wednesday Night
 
A chance of showers and thunderstorms. Partly cloudy, with a low around 49.
Thursday
 
A chance of showers and thunderstorms. Mostly sunny, with a high near 79.

 

Forecast from NOAA-NWS for Belle Fourche SD.