WeatherWX.comSt. Lawrence Monthly Climate Averages
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 33°F Lo 27°F | Hi 31°F Lo 25°F | Hi 32°F Lo 27°F | Hi 37°F Lo 33°F | Hi 43°F Lo 39°F | Hi 50°F Lo 46°F | Hi 59°F Lo 55°F | Hi 64°F Lo 61°F | Hi 60°F Lo 56°F | Hi 52°F Lo 48°F | Hi 45°F Lo 40°F | Hi 38°F Lo 33°F |
| 23 mph | 23 mph | 21 mph | 19 mph | 16 mph | 14 mph | 14 mph | 14 mph | 17 mph | 19 mph | 22 mph | 23 mph |
| 6 in | 5.3 in | 5.2 in | 5 in | 4.8 in | 6.1 in | 6 in | 5.1 in | 5.6 in | 5.3 in | 5.8 in | 6.4 in |
| 79% | 80% | 81% | 85% | 86% | 88% | 89% | 86% | 81% | 79% | 79% | 79% |
| 80% | 76% | 69% | 62% | 56% | 55% | 53% | 44% | 45% | 55% | 66% | 75% |
| 29.8 in | 29.8 in | 29.9 in | 29.9 in | 30.0 in | 29.9 in | 29.9 in | 30.0 in | 30.0 in | 29.9 in | 29.9 in | 29.9 in |
| 12 | 11 | 12 | 17 | 23 | 21 | 23 | 25 | 23 | 23 | 16 | 13 |
| 7 | 6 | 9 | 9 | 8 | 9 | 8 | 6 | 7 | 8 | 11 | 9 |
| 12 | 11 | 10 | 4 | 1 | 0 | 0 | 0 | 0 | 0 | 3 | 9 |
| 0 | 0 | 0 | 0 | 1 | 2 | 2 | 1 | 0 | 0 | 0 | 0 |
| 1 | 1 | 1 | 1 | 2 | 3 | 4 | 4 | 4 | 2 | 1 | 1 |
| 111 | 115 | 172 | 196 | 227 | 215 | 238 | 274 | 261 | 233 | 178 | 134 |
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 1°C Lo -3°C | Hi -1°C Lo -4°C | Hi 0°C Lo -3°C | Hi 3°C Lo 1°C | Hi 6°C Lo 4°C | Hi 10°C Lo 8°C | Hi 15°C Lo 13°C | Hi 18°C Lo 16°C | Hi 16°C Lo 14°C | Hi 11°C Lo 9°C | Hi 7°C Lo 5°C | Hi 3°C Lo 0°C |
| 37 km/h | 37 km/h | 34 km/h | 30 km/h | 25 km/h | 23 km/h | 22 km/h | 23 km/h | 28 km/h | 31 km/h | 35 km/h | 37 km/h |
| 151 mm | 135 mm | 132 mm | 126 mm | 122 mm | 155 mm | 153 mm | 128 mm | 143 mm | 134 mm | 147 mm | 162 mm |
| 79% | 80% | 81% | 85% | 86% | 88% | 89% | 86% | 81% | 79% | 79% | 79% |
| 80% | 76% | 69% | 62% | 56% | 55% | 53% | 44% | 45% | 55% | 66% | 75% |
| 1010 mb | 1010 mb | 1012 mb | 1013 mb | 1016 mb | 1014 mb | 1014 mb | 1015 mb | 1016 mb | 1014 mb | 1014 mb | 1012 mb |
| 12 | 11 | 12 | 17 | 23 | 21 | 23 | 25 | 23 | 23 | 16 | 13 |
| 7 | 6 | 9 | 9 | 8 | 9 | 8 | 6 | 7 | 8 | 11 | 9 |
| 12 | 11 | 10 | 4 | 1 | 0 | 0 | 0 | 0 | 0 | 3 | 9 |
| 0 | 0 | 0 | 0 | 1 | 2 | 2 | 1 | 0 | 0 | 0 | 0 |
| 1 | 1 | 1 | 1 | 2 | 3 | 4 | 4 | 4 | 2 | 1 | 1 |
| 111 | 115 | 172 | 196 | 227 | 215 | 238 | 274 | 261 | 233 | 178 | 134 |
| 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.
