WeatherWX.comSt. John Monthly Climate Averages
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 28°F Lo 16°F | Hi 29°F Lo 17°F | Hi 35°F Lo 24°F | Hi 45°F Lo 34°F | Hi 55°F Lo 42°F | Hi 63°F Lo 50°F | Hi 70°F Lo 56°F | Hi 71°F Lo 57°F | Hi 65°F Lo 52°F | Hi 55°F Lo 44°F | Hi 44°F Lo 34°F | Hi 34°F Lo 25°F |
| 12 mph | 12 mph | 12 mph | 10 mph | 9 mph | 8 mph | 8 mph | 7 mph | 9 mph | 10 mph | 11 mph | 12 mph |
| 7.2 in | 6.7 in | 5.7 in | 5.8 in | 5.7 in | 5.3 in | 3.3 in | 3.2 in | 4.4 in | 5.8 in | 7.2 in | 9 in |
| 85% | 86% | 83% | 81% | 81% | 82% | 83% | 82% | 81% | 80% | 80% | 82% |
| 61% | 64% | 59% | 58% | 52% | 47% | 42% | 37% | 39% | 45% | 51% | 59% |
| 29.9 in | 29.9 in | 30.0 in | 29.9 in | 30.0 in | 29.9 in | 29.9 in | 30.0 in | 30.0 in | 30.0 in | 30.0 in | 30.0 in |
| 4 | 3 | 7 | 12 | 21 | 23 | 26 | 27 | 25 | 22 | 14 | 6 |
| 8 | 7 | 9 | 11 | 9 | 7 | 5 | 4 | 5 | 8 | 9 | 10 |
| 20 | 19 | 17 | 7 | 1 | 0 | 0 | 0 | 0 | 1 | 7 | 15 |
| 1 | 1 | 1 | 2 | 3 | 5 | 7 | 6 | 3 | 1 | 0 | 0 |
| 1 | 1 | 2 | 2 | 4 | 4 | 5 | 5 | 4 | 2 | 2 | 1 |
| 202 | 163 | 205 | 217 | 250 | 261 | 293 | 315 | 283 | 265 | 226 | 199 |
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi -2°C Lo -9°C | Hi -2°C Lo -8°C | Hi 2°C Lo -5°C | Hi 7°C Lo 1°C | Hi 13°C Lo 6°C | Hi 17°C Lo 10°C | Hi 21°C Lo 14°C | Hi 22°C Lo 14°C | Hi 18°C Lo 11°C | Hi 13°C Lo 6°C | Hi 7°C Lo 1°C | Hi 1°C Lo -4°C |
| 19 km/h | 19 km/h | 19 km/h | 17 km/h | 14 km/h | 13 km/h | 12 km/h | 12 km/h | 14 km/h | 17 km/h | 18 km/h | 19 km/h |
| 183 mm | 170 mm | 144 mm | 147 mm | 145 mm | 135 mm | 83 mm | 81 mm | 111 mm | 147 mm | 183 mm | 230 mm |
| 85% | 86% | 83% | 81% | 81% | 82% | 83% | 82% | 81% | 80% | 80% | 82% |
| 61% | 64% | 59% | 58% | 52% | 47% | 42% | 37% | 39% | 45% | 51% | 59% |
| 1013 mb | 1014 mb | 1015 mb | 1014 mb | 1016 mb | 1013 mb | 1013 mb | 1014 mb | 1017 mb | 1016 mb | 1016 mb | 1015 mb |
| 4 | 3 | 7 | 12 | 21 | 23 | 26 | 27 | 25 | 22 | 14 | 6 |
| 8 | 7 | 9 | 11 | 9 | 7 | 5 | 4 | 5 | 8 | 9 | 10 |
| 20 | 19 | 17 | 7 | 1 | 0 | 0 | 0 | 0 | 1 | 7 | 15 |
| 1 | 1 | 1 | 2 | 3 | 5 | 7 | 6 | 3 | 1 | 0 | 0 |
| 1 | 1 | 2 | 2 | 4 | 4 | 5 | 5 | 4 | 2 | 2 | 1 |
| 202 | 163 | 205 | 217 | 250 | 261 | 293 | 315 | 283 | 265 | 226 | 199 |
| 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.
