WeatherWorld.comSt. Clair Monthly Climate Averages
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 37°F Lo 24°F | Hi 42°F Lo 26°F | Hi 53°F Lo 36°F | Hi 63°F Lo 45°F | Hi 73°F Lo 56°F | Hi 81°F Lo 63°F | Hi 85°F Lo 67°F | Hi 84°F Lo 65°F | Hi 78°F Lo 60°F | Hi 66°F Lo 49°F | Hi 52°F Lo 37°F | Hi 43°F Lo 31°F |
| 9 mph | 9 mph | 9 mph | 9 mph | 7 mph | 6 mph | 5 mph | 5 mph | 6 mph | 7 mph | 8 mph | 8 mph |
| 3.3 in | 4 in | 4.6 in | 5.7 in | 5.3 in | 4.9 in | 4.4 in | 3.2 in | 3 in | 3.5 in | 3.6 in | 4.3 in |
| 79% | 79% | 75% | 75% | 79% | 77% | 78% | 75% | 73% | 72% | 72% | 79% |
| 60% | 56% | 50% | 47% | 43% | 34% | 34% | 31% | 31% | 37% | 39% | 56% |
| 30.1 in | 30.1 in | 30.1 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 |
| 18 | 17 | 22 | 21 | 21 | 20 | 21 | 23 | 23 | 24 | 24 | 20 |
| 9 | 8 | 8 | 9 | 10 | 10 | 10 | 8 | 7 | 7 | 6 | 8 |
| 4 | 4 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 2 |
| 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 |
| 1 | 2 | 3 | 4 | 5 | 6 | 6 | 5 | 5 | 3 | 2 | 1 |
| 110 | 119 | 146 | 152 | 178 | 217 | 229 | 240 | 230 | 205 | 201 | 126 |
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 3°C Lo -5°C | Hi 5°C Lo -3°C | Hi 11°C Lo 2°C | Hi 17°C Lo 7°C | Hi 23°C Lo 13°C | Hi 27°C Lo 17°C | Hi 29°C Lo 19°C | Hi 29°C Lo 19°C | Hi 26°C Lo 15°C | Hi 19°C Lo 9°C | Hi 11°C Lo 3°C | Hi 6°C Lo -1°C |
| 14 km/h | 14 km/h | 14 km/h | 14 km/h | 11 km/h | 10 km/h | 9 km/h | 9 km/h | 10 km/h | 12 km/h | 13 km/h | 13 km/h |
| 83 mm | 101 mm | 118 mm | 143 mm | 135 mm | 124 mm | 113 mm | 82 mm | 75 mm | 88 mm | 90 mm | 109 mm |
| 79% | 79% | 75% | 75% | 79% | 77% | 78% | 75% | 73% | 72% | 72% | 79% |
| 60% | 56% | 50% | 47% | 43% | 34% | 34% | 31% | 31% | 37% | 39% | 56% |
| 1020 mb | 1020 mb | 1019 mb | 1015 mb | 1015 mb | 1014 mb | 1015 mb | 1015 mb | 1017 mb | 1017 mb | 1021 mb | 1020 mb |
| 18 | 17 | 22 | 21 | 21 | 20 | 21 | 23 | 23 | 24 | 24 | 20 |
| 9 | 8 | 8 | 9 | 10 | 10 | 10 | 8 | 7 | 7 | 6 | 8 |
| 4 | 4 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 2 |
| 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 |
| 1 | 2 | 3 | 4 | 5 | 6 | 6 | 5 | 5 | 3 | 2 | 1 |
| 110 | 119 | 146 | 152 | 178 | 217 | 229 | 240 | 230 | 205 | 201 | 126 |
| 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.