Weather World
Diablo Ski Trail Monthly Climate Averages
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 43°F Lo 26°F | Hi 49°F Lo 29°F | Hi 58°F Lo 36°F | Hi 67°F Lo 42°F | Hi 75°F Lo 50°F | Hi 86°F Lo 61°F | Hi 88°F Lo 65°F | Hi 86°F Lo 64°F | Hi 80°F Lo 57°F | Hi 67°F Lo 45°F | Hi 54°F Lo 34°F | Hi 44°F Lo 27°F |
| 6 mph | 7 mph | 8 mph | 9 mph | 9 mph | 7 mph | 6 mph | 6 mph | 6 mph | 7 mph | 6 mph | 6 mph |
| 0.8 in | 0.6 in | 0.6 in | 0.5 in | 1 in | 1.3 in | 2.3 in | 1.4 in | 1.7 in | 1.5 in | 1 in | 0.7 in |
| 61% | 52% | 39% | 30% | 30% | 30% | 40% | 41% | 43% | 43% | 48% | 58% |
| 21% | 21% | 19% | 16% | 14% | 14% | 23% | 19% | 16% | 14% | 16% | 20% |
| 30.2 in | 30.1 in | 30.0 in | 29.9 in | 29.9 in | 29.9 in | 30.0 in | 30.0 in | 30.0 in | 30.0 in | 30.1 in | 30.1 in |
| 26 | 24 | 27 | 28 | 28 | 27 | 22 | 26 | 26 | 27 | 27 | 26 |
| 4 | 3 | 3 | 2 | 3 | 3 | 9 | 5 | 4 | 4 | 2 | 3 |
| 2 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 2 |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 2 | 2 | 3 | 4 | 5 | 6 | 6 | 6 | 5 | 3 | 2 | 2 |
| 279 | 257 | 290 | 305 | 307 | 305 | 298 | 327 | 307 | 307 | 300 | 293 |
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 6°C Lo -4°C | Hi 9°C Lo -2°C | Hi 15°C Lo 2°C | Hi 19°C Lo 6°C | Hi 24°C Lo 10°C | Hi 30°C Lo 16°C | Hi 31°C Lo 19°C | Hi 30°C Lo 18°C | Hi 26°C Lo 14°C | Hi 19°C Lo 7°C | Hi 12°C Lo 1°C | Hi 7°C Lo -3°C |
| 10 km/h | 12 km/h | 14 km/h | 15 km/h | 14 km/h | 12 km/h | 10 km/h | 9 km/h | 10 km/h | 11 km/h | 10 km/h | 10 km/h |
| 21 mm | 16 mm | 16 mm | 13 mm | 25 mm | 33 mm | 57 mm | 36 mm | 44 mm | 37 mm | 26 mm | 19 mm |
| 61% | 52% | 39% | 30% | 30% | 30% | 40% | 41% | 43% | 43% | 48% | 58% |
| 21% | 21% | 19% | 16% | 14% | 14% | 23% | 19% | 16% | 14% | 16% | 20% |
| 1021 mb | 1018 mb | 1015 mb | 1012 mb | 1012 mb | 1012 mb | 1015 mb | 1015 mb | 1016 mb | 1016 mb | 1019 mb | 1020 mb |
| 26 | 24 | 27 | 28 | 28 | 27 | 22 | 26 | 26 | 27 | 27 | 26 |
| 4 | 3 | 3 | 2 | 3 | 3 | 9 | 5 | 4 | 4 | 2 | 3 |
| 2 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 2 |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 2 | 2 | 3 | 4 | 5 | 6 | 6 | 6 | 5 | 3 | 2 | 2 |
| 279 | 257 | 290 | 305 | 307 | 305 | 298 | 327 | 307 | 307 | 300 | 293 |
| 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.