| National Weather Service Forecast for:
Belle Fourche SD Issued by: National Weather Service Rapid City, SD |
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| Updated: 12:31 am MDT Aug 20, 2026 | ||||||||||||||||||
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| Overnight |
Mostly clear, with a low around 58. West wind around 7 mph. |
| Thursday |
Patchy smoke between 11am and noon. Sunny, with a high near 92. Light and variable wind becoming north 5 to 8 mph in the morning. Winds could gust as high as 18 mph. |
| Thursday Night |
Partly cloudy, with a low around 60. East wind 5 to 9 mph becoming calm after midnight. Winds could gust as high as 17 mph. |
| Friday |
Mostly sunny, with a high near 92. Light and variable wind becoming northeast 6 to 11 mph in the morning. Winds could gust as high as 22 mph. |
| Friday Night |
Mostly clear, with a low around 58. Northeast wind 6 to 11 mph becoming light east after midnight. Winds could gust as high as 22 mph. |
| Saturday |
Mostly sunny, with a high near 88. Breezy, with an east wind 5 to 10 mph increasing to 19 to 24 mph in the afternoon. Winds could gust as high as 36 mph. |
| Saturday Night |
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 61. Breezy. |
| Sunday |
Mostly sunny, with a high near 93. |
| Sunday Night |
A chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 61. |
| Monday |
Sunny, with a high near 91. |
| Monday Night |
A chance of showers and thunderstorms. Partly cloudy, with a low around 58. |
| Tuesday |
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 88. |
| Tuesday Night |
A chance of showers and thunderstorms. Partly cloudy, with a low around 57. |
| Wednesday |
A slight chance of showers. Mostly sunny, with a high near 88. |
Forecast from NOAA-NWS for Belle Fourche SD.
