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Belle Fourche Monthly Climate Averages
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 34°F Lo 18°F | Hi 33°F Lo 16°F | Hi 47°F Lo 27°F | Hi 53°F Lo 33°F | Hi 64°F Lo 43°F | Hi 78°F Lo 55°F | Hi 87°F Lo 62°F | Hi 85°F Lo 61°F | Hi 76°F Lo 53°F | Hi 58°F Lo 39°F | Hi 46°F Lo 28°F | Hi 33°F Lo 17°F |
| 10 mph | 10 mph | 10 mph | 10 mph | 10 mph | 9 mph | 8 mph | 8 mph | 9 mph | 10 mph | 10 mph | 10 mph |
| 0.2 in | 0.2 in | 0.5 in | 1 in | 1.2 in | 0.9 in | 0.7 in | 0.7 in | 0.5 in | 0.7 in | 0.2 in | 0.3 in |
| 78% | 76% | 70% | 66% | 63% | 56% | 48% | 45% | 45% | 57% | 61% | 75% |
| 41% | 43% | 39% | 41% | 36% | 24% | 19% | 17% | 18% | 28% | 30% | 40% |
| 30.1 in | 30.1 in | 30.0 in | 29.9 in | 29.9 in | 29.8 in | 29.9 in | 29.9 in | 29.9 in | 30.0 in | 30.1 in | 30.1 in |
| 26 | 22 | 25 | 21 | 24 | 25 | 27 | 27 | 28 | 26 | 26 | 24 |
| 4 | 5 | 4 | 6 | 6 | 5 | 4 | 4 | 2 | 4 | 3 | 5 |
| 1 | 2 | 2 | 3 | 1 | 0 | 0 | 0 | 0 | 1 | 1 | 2 |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1 | 1 | 2 | 3 | 4 | 5 | 6 | 6 | 4 | 3 | 1 | 1 |
| 64 | 55 | 71 | 64 | 73 | 92 | 102 | 105 | 99 | 85 | 80 | 67 |
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 1°C Lo -8°C | Hi 1°C Lo -9°C | Hi 8°C Lo -3°C | Hi 12°C Lo 1°C | Hi 18°C Lo 6°C | Hi 26°C Lo 13°C | Hi 31°C Lo 17°C | Hi 29°C Lo 16°C | Hi 25°C Lo 12°C | Hi 14°C Lo 4°C | Hi 8°C Lo -2°C | Hi 0°C Lo -8°C |
| 17 km/h | 16 km/h | 16 km/h | 17 km/h | 16 km/h | 15 km/h | 13 km/h | 13 km/h | 14 km/h | 16 km/h | 16 km/h | 16 km/h |
| 4 mm | 6 mm | 11 mm | 24 mm | 30 mm | 24 mm | 17 mm | 17 mm | 12 mm | 17 mm | 4 mm | 7 mm |
| 78% | 76% | 70% | 66% | 63% | 56% | 48% | 45% | 45% | 57% | 61% | 75% |
| 41% | 43% | 39% | 41% | 36% | 24% | 19% | 17% | 18% | 28% | 30% | 40% |
| 1020 mb | 1021 mb | 1016 mb | 1014 mb | 1013 mb | 1010 mb | 1012 mb | 1012 mb | 1013 mb | 1015 mb | 1018 mb | 1020 mb |
| 26 | 22 | 25 | 21 | 24 | 25 | 27 | 27 | 28 | 26 | 26 | 24 |
| 4 | 5 | 4 | 6 | 6 | 5 | 4 | 4 | 2 | 4 | 3 | 5 |
| 1 | 2 | 2 | 3 | 1 | 0 | 0 | 0 | 0 | 1 | 1 | 2 |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1 | 1 | 2 | 3 | 4 | 5 | 6 | 6 | 4 | 3 | 1 | 1 |
| 64 | 55 | 71 | 64 | 73 | 92 | 102 | 105 | 99 | 85 | 80 | 67 |
| Month |
| Avg. Temperatures |
| Avg. Wind Speed |
| Avg. Precipitation |
| Average Humidity |
| Avg. Cloud Cover |
| Pressure Average |
| Average Dry Days |
| Avg. Precip. Days |
| Avg. Snow Days |
| Average Fog Days |
| Average UV Index |
| Avg. Hours of Sun |
Averages are based on historical weather data from the past 10 years.