Weather World
Rock Lake Monthly Climate Averages
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 51°F Lo 30°F | Hi 55°F Lo 33°F | Hi 66°F Lo 41°F | Hi 73°F Lo 47°F | Hi 81°F Lo 56°F | Hi 91°F Lo 67°F | Hi 92°F Lo 70°F | Hi 91°F Lo 69°F | Hi 84°F Lo 62°F | Hi 72°F Lo 50°F | Hi 61°F Lo 39°F | Hi 52°F Lo 32°F |
| 11 mph | 12 mph | 13 mph | 13 mph | 12 mph | 12 mph | 10 mph | 10 mph | 11 mph | 12 mph | 12 mph | 12 mph |
| 0.7 in | 0.6 in | 0.8 in | 1.5 in | 2.7 in | 2.2 in | 1.9 in | 2 in | 1.7 in | 2.1 in | 0.8 in | 0.7 in |
| 51% | 49% | 41% | 39% | 42% | 45% | 47% | 47% | 53% | 51% | 51% | 53% |
| 21% | 23% | 22% | 21% | 22% | 19% | 21% | 19% | 20% | 18% | 19% | 21% |
| 30.1 in | 30.0 in | 29.9 in | 29.9 in | 29.8 in | 29.8 in | 29.9 in | 29.9 in | 29.9 in | 29.9 in | 30.0 in | 30.1 in |
| 28 | 24 | 29 | 27 | 26 | 24 | 26 | 25 | 26 | 27 | 27 | 27 |
| 2 | 2 | 2 | 3 | 5 | 6 | 6 | 6 | 4 | 3 | 2 | 2 |
| 1 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 |
| 2 | 3 | 4 | 5 | 6 | 6 | 6 | 6 | 5 | 3 | 2 | 2 |
| 278 | 248 | 281 | 277 | 268 | 276 | 282 | 309 | 285 | 282 | 290 | 288 |
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 10°C Lo -1°C | Hi 13°C Lo 1°C | Hi 19°C Lo 5°C | Hi 23°C Lo 9°C | Hi 27°C Lo 14°C | Hi 33°C Lo 20°C | Hi 33°C Lo 21°C | Hi 33°C Lo 20°C | Hi 29°C Lo 16°C | Hi 22°C Lo 10°C | Hi 16°C Lo 4°C | Hi 11°C Lo -0°C |
| 18 km/h | 19 km/h | 21 km/h | 22 km/h | 20 km/h | 20 km/h | 17 km/h | 16 km/h | 17 km/h | 19 km/h | 19 km/h | 19 km/h |
| 17 mm | 14 mm | 20 mm | 37 mm | 68 mm | 56 mm | 48 mm | 49 mm | 43 mm | 53 mm | 20 mm | 16 mm |
| 51% | 49% | 41% | 39% | 42% | 45% | 47% | 47% | 53% | 51% | 51% | 53% |
| 21% | 23% | 22% | 21% | 22% | 19% | 21% | 19% | 20% | 18% | 19% | 21% |
| 1020 mb | 1017 mb | 1014 mb | 1011 mb | 1011 mb | 1010 mb | 1013 mb | 1013 mb | 1013 mb | 1011 mb | 1017 mb | 1019 mb |
| 28 | 24 | 29 | 27 | 26 | 24 | 26 | 25 | 26 | 27 | 27 | 27 |
| 2 | 2 | 2 | 3 | 5 | 6 | 6 | 6 | 4 | 3 | 2 | 2 |
| 1 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 |
| 2 | 3 | 4 | 5 | 6 | 6 | 6 | 6 | 5 | 3 | 2 | 2 |
| 278 | 248 | 281 | 277 | 268 | 276 | 282 | 309 | 285 | 282 | 290 | 288 |
| 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.