Weather World
St. Marys Monthly Climate Averages
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 38°F Lo 22°F | Hi 43°F Lo 25°F | Hi 56°F Lo 37°F | Hi 65°F Lo 45°F | Hi 73°F Lo 55°F | Hi 85°F Lo 66°F | Hi 89°F Lo 70°F | Hi 88°F Lo 67°F | Hi 82°F Lo 61°F | Hi 68°F Lo 49°F | Hi 55°F Lo 37°F | Hi 43°F Lo 28°F |
| 10 mph | 10 mph | 11 mph | 11 mph | 10 mph | 9 mph | 8 mph | 8 mph | 9 mph | 10 mph | 10 mph | 10 mph |
| 1.5 in | 1.5 in | 3.1 in | 4.7 in | 7.7 in | 5.8 in | 4.4 in | 4.5 in | 3.6 in | 3 in | 2.7 in | 1.6 in |
| 73% | 70% | 68% | 68% | 76% | 75% | 71% | 68% | 66% | 62% | 66% | 70% |
| 41% | 42% | 43% | 40% | 42% | 29% | 27% | 27% | 27% | 30% | 31% | 38% |
| 30.2 in | 30.1 in | 30.0 in | 29.9 in | 29.9 in | 29.9 in | 29.9 in | 29.9 in | 30.0 in | 30.0 in | 30.1 in | 30.1 in |
| 24 | 22 | 24 | 23 | 22 | 22 | 25 | 24 | 24 | 26 | 26 | 26 |
| 4 | 4 | 6 | 7 | 9 | 8 | 6 | 7 | 6 | 5 | 4 | 3 |
| 3 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 2 |
| 2 | 1 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 0 | 1 | 2 |
| 2 | 2 | 3 | 4 | 5 | 6 | 6 | 6 | 5 | 3 | 2 | 1 |
| 193 | 171 | 187 | 186 | 183 | 240 | 254 | 257 | 253 | 238 | 235 | 214 |
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 3°C Lo -6°C | Hi 6°C Lo -4°C | Hi 13°C Lo 3°C | Hi 18°C Lo 7°C | Hi 23°C Lo 13°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 20°C Lo 9°C | Hi 13°C Lo 3°C | Hi 6°C Lo -3°C |
| 16 km/h | 17 km/h | 18 km/h | 18 km/h | 15 km/h | 15 km/h | 13 km/h | 13 km/h | 14 km/h | 17 km/h | 17 km/h | 16 km/h |
| 38 mm | 38 mm | 79 mm | 119 mm | 197 mm | 146 mm | 111 mm | 115 mm | 91 mm | 76 mm | 68 mm | 40 mm |
| 73% | 70% | 68% | 68% | 76% | 75% | 71% | 68% | 66% | 62% | 66% | 70% |
| 41% | 42% | 43% | 40% | 42% | 29% | 27% | 27% | 27% | 30% | 31% | 38% |
| 1021 mb | 1020 mb | 1016 mb | 1013 mb | 1013 mb | 1011 mb | 1013 mb | 1014 mb | 1015 mb | 1016 mb | 1019 mb | 1020 mb |
| 24 | 22 | 24 | 23 | 22 | 22 | 25 | 24 | 24 | 26 | 26 | 26 |
| 4 | 4 | 6 | 7 | 9 | 8 | 6 | 7 | 6 | 5 | 4 | 3 |
| 3 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 2 |
| 2 | 1 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 0 | 1 | 2 |
| 2 | 2 | 3 | 4 | 5 | 6 | 6 | 6 | 5 | 3 | 2 | 1 |
| 193 | 171 | 187 | 186 | 183 | 240 | 254 | 257 | 253 | 238 | 235 | 214 |
| 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.