Weather World
Rock Reservoir Monthly Climate Averages
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 33°F Lo 16°F | Hi 37°F Lo 20°F | Hi 47°F Lo 29°F | Hi 56°F Lo 36°F | Hi 66°F Lo 45°F | Hi 81°F Lo 56°F | Hi 86°F Lo 64°F | Hi 83°F Lo 62°F | Hi 75°F Lo 54°F | Hi 59°F Lo 39°F | Hi 46°F Lo 27°F | Hi 34°F Lo 17°F |
| 4 mph | 5 mph | 6 mph | 8 mph | 7 mph | 7 mph | 6 mph | 6 mph | 6 mph | 5 mph | 5 mph | 4 mph |
| 0.6 in | 0.7 in | 0.7 in | 0.5 in | 0.9 in | 0.4 in | 0.5 in | 0.7 in | 0.7 in | 0.9 in | 0.6 in | 0.8 in |
| 74% | 68% | 57% | 45% | 38% | 28% | 31% | 35% | 36% | 45% | 54% | 69% |
| 30% | 29% | 27% | 23% | 21% | 15% | 18% | 17% | 14% | 16% | 19% | 29% |
| 30.2 in | 30.1 in | 30.0 in | 29.9 in | 29.8 in | 29.8 in | 29.9 in | 29.9 in | 29.9 in | 30.0 in | 30.1 in | 30.2 in |
| 23 | 22 | 26 | 27 | 28 | 28 | 28 | 27 | 28 | 28 | 26 | 23 |
| 5 | 4 | 4 | 2 | 3 | 2 | 3 | 4 | 2 | 3 | 2 | 5 |
| 3 | 3 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 3 |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
| 2 | 2 | 2 | 3 | 5 | 6 | 6 | 6 | 4 | 3 | 2 | 2 |
| 246 | 222 | 255 | 271 | 273 | 290 | 291 | 314 | 311 | 304 | 295 | 257 |
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 0°C Lo -9°C | Hi 3°C Lo -7°C | Hi 9°C Lo -2°C | Hi 13°C Lo 2°C | Hi 19°C Lo 7°C | Hi 27°C Lo 13°C | Hi 30°C Lo 18°C | Hi 28°C Lo 16°C | Hi 24°C Lo 12°C | Hi 15°C Lo 4°C | Hi 8°C Lo -3°C | Hi 1°C Lo -8°C |
| 7 km/h | 8 km/h | 10 km/h | 12 km/h | 12 km/h | 12 km/h | 9 km/h | 9 km/h | 9 km/h | 9 km/h | 8 km/h | 7 km/h |
| 16 mm | 18 mm | 17 mm | 13 mm | 22 mm | 10 mm | 13 mm | 16 mm | 17 mm | 22 mm | 15 mm | 20 mm |
| 74% | 68% | 57% | 45% | 38% | 28% | 31% | 35% | 36% | 45% | 54% | 69% |
| 30% | 29% | 27% | 23% | 21% | 15% | 18% | 17% | 14% | 16% | 19% | 29% |
| 1024 mb | 1020 mb | 1016 mb | 1012 mb | 1011 mb | 1010 mb | 1013 mb | 1013 mb | 1014 mb | 1017 mb | 1020 mb | 1022 mb |
| 23 | 22 | 26 | 27 | 28 | 28 | 28 | 27 | 28 | 28 | 26 | 23 |
| 5 | 4 | 4 | 2 | 3 | 2 | 3 | 4 | 2 | 3 | 2 | 5 |
| 3 | 3 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 3 |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
| 2 | 2 | 2 | 3 | 5 | 6 | 6 | 6 | 4 | 3 | 2 | 2 |
| 246 | 222 | 255 | 271 | 273 | 290 | 291 | 314 | 311 | 304 | 295 | 257 |
| 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.