Weather World
Rock Valley Lake Monthly Climate Averages
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 41°F Lo 26°F | Hi 45°F Lo 30°F | Hi 57°F Lo 40°F | Hi 67°F Lo 48°F | Hi 75°F Lo 58°F | Hi 86°F Lo 67°F | Hi 89°F Lo 70°F | Hi 87°F Lo 68°F | Hi 82°F Lo 61°F | Hi 70°F Lo 51°F | Hi 56°F Lo 39°F | Hi 46°F Lo 32°F |
| 9 mph | 9 mph | 9 mph | 9 mph | 8 mph | 7 mph | 6 mph | 6 mph | 6 mph | 8 mph | 9 mph | 9 mph |
| 3.4 in | 3.3 in | 4.9 in | 7.2 in | 6.2 in | 4.4 in | 4.5 in | 3.8 in | 3.6 in | 4.1 in | 3.6 in | 3.6 in |
| 75% | 77% | 75% | 76% | 79% | 75% | 76% | 74% | 71% | 68% | 71% | 75% |
| 48% | 50% | 47% | 43% | 41% | 29% | 31% | 29% | 30% | 32% | 36% | 48% |
| 30.2 in | 30.1 in | 30.0 in | 30.0 in | 30.0 in | 29.9 in | 30.0 in | 30.0 in | 30.0 in | 30.0 in | 30.1 in | 30.1 in |
| 23 | 19 | 23 | 22 | 22 | 22 | 22 | 23 | 24 | 25 | 24 | 23 |
| 6 | 7 | 7 | 8 | 9 | 8 | 9 | 8 | 6 | 6 | 6 | 6 |
| 3 | 3 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 2 |
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 1 | 1 |
| 2 | 2 | 3 | 4 | 5 | 6 | 6 | 5 | 5 | 3 | 2 | 2 |
| 171 | 146 | 160 | 171 | 181 | 223 | 224 | 252 | 235 | 223 | 213 | 169 |
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 5°C Lo -3°C | Hi 7°C Lo -1°C | Hi 14°C Lo 4°C | Hi 19°C Lo 9°C | Hi 24°C Lo 14°C | Hi 30°C Lo 19°C | Hi 32°C Lo 21°C | Hi 31°C Lo 20°C | Hi 28°C Lo 16°C | Hi 21°C Lo 10°C | Hi 13°C Lo 4°C | Hi 8°C Lo 0°C |
| 14 km/h | 15 km/h | 15 km/h | 15 km/h | 12 km/h | 11 km/h | 9 km/h | 9 km/h | 10 km/h | 13 km/h | 14 km/h | 14 km/h |
| 85 mm | 83 mm | 123 mm | 184 mm | 157 mm | 113 mm | 114 mm | 96 mm | 92 mm | 103 mm | 91 mm | 91 mm |
| 75% | 77% | 75% | 76% | 79% | 75% | 76% | 74% | 71% | 68% | 71% | 75% |
| 48% | 50% | 47% | 43% | 41% | 29% | 31% | 29% | 30% | 32% | 36% | 48% |
| 1021 mb | 1020 mb | 1018 mb | 1015 mb | 1015 mb | 1014 mb | 1015 mb | 1015 mb | 1016 mb | 1017 mb | 1020 mb | 1020 mb |
| 23 | 19 | 23 | 22 | 22 | 22 | 22 | 23 | 24 | 25 | 24 | 23 |
| 6 | 7 | 7 | 8 | 9 | 8 | 9 | 8 | 6 | 6 | 6 | 6 |
| 3 | 3 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 2 |
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 1 | 1 |
| 2 | 2 | 3 | 4 | 5 | 6 | 6 | 5 | 5 | 3 | 2 | 2 |
| 171 | 146 | 160 | 171 | 181 | 223 | 224 | 252 | 235 | 223 | 213 | 169 |
| 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.