WeatherWX.comThunder Bay Island Monthly Climate Averages
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 25°F Lo 18°F | Hi 26°F Lo 17°F | Hi 35°F Lo 25°F | Hi 45°F Lo 34°F | Hi 58°F Lo 44°F | Hi 66°F Lo 51°F | Hi 74°F Lo 59°F | Hi 74°F Lo 60°F | Hi 67°F Lo 54°F | Hi 55°F Lo 45°F | Hi 42°F Lo 34°F | Hi 32°F Lo 26°F |
| 11 mph | 11 mph | 10 mph | 11 mph | 9 mph | 8 mph | 8 mph | 8 mph | 9 mph | 11 mph | 11 mph | 11 mph |
| 1.8 in | 1.8 in | 2.2 in | 3.6 in | 3.4 in | 3 in | 3.3 in | 3.3 in | 2.6 in | 3.6 in | 2.1 in | 2 in |
| 85% | 86% | 81% | 76% | 74% | 76% | 77% | 77% | 76% | 77% | 78% | 81% |
| 79% | 75% | 61% | 54% | 41% | 35% | 30% | 30% | 35% | 52% | 56% | 73% |
| 30.0 in | 30.0 in | 30.1 in | 30.0 in | 30.0 in | 29.9 in | 29.9 in | 29.9 in | 30.0 in | 30.0 in | 30.0 in | 30.0 in |
| 4 | 3 | 9 | 16 | 24 | 25 | 26 | 26 | 25 | 24 | 12 | 6 |
| 5 | 4 | 6 | 7 | 6 | 5 | 5 | 5 | 5 | 6 | 6 | 6 |
| 24 | 22 | 16 | 7 | 0 | 0 | 0 | 0 | 0 | 1 | 11 | 21 |
| 1 | 1 | 2 | 2 | 3 | 4 | 2 | 1 | 0 | 1 | 0 | 1 |
| 1 | 1 | 2 | 2 | 4 | 5 | 5 | 5 | 3 | 2 | 1 | 1 |
| 102 | 115 | 196 | 224 | 283 | 299 | 325 | 333 | 300 | 243 | 215 | 141 |
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi -4°C Lo -8°C | Hi -3°C Lo -8°C | Hi 2°C Lo -4°C | Hi 7°C Lo 1°C | Hi 14°C Lo 6°C | Hi 19°C Lo 11°C | Hi 23°C Lo 15°C | Hi 24°C Lo 16°C | Hi 20°C Lo 12°C | Hi 13°C Lo 7°C | Hi 6°C Lo 1°C | Hi 0°C Lo -3°C |
| 18 km/h | 17 km/h | 17 km/h | 17 km/h | 14 km/h | 12 km/h | 12 km/h | 13 km/h | 14 km/h | 17 km/h | 18 km/h | 18 km/h |
| 45 mm | 46 mm | 55 mm | 91 mm | 85 mm | 77 mm | 84 mm | 83 mm | 65 mm | 90 mm | 53 mm | 51 mm |
| 85% | 86% | 81% | 76% | 74% | 76% | 77% | 77% | 76% | 77% | 78% | 81% |
| 79% | 75% | 61% | 54% | 41% | 35% | 30% | 30% | 35% | 52% | 56% | 73% |
| 1017 mb | 1018 mb | 1019 mb | 1015 mb | 1016 mb | 1013 mb | 1014 mb | 1014 mb | 1016 mb | 1015 mb | 1017 mb | 1017 mb |
| 4 | 3 | 9 | 16 | 24 | 25 | 26 | 26 | 25 | 24 | 12 | 6 |
| 5 | 4 | 6 | 7 | 6 | 5 | 5 | 5 | 5 | 6 | 6 | 6 |
| 24 | 22 | 16 | 7 | 0 | 0 | 0 | 0 | 0 | 1 | 11 | 21 |
| 1 | 1 | 2 | 2 | 3 | 4 | 2 | 1 | 0 | 1 | 0 | 1 |
| 1 | 1 | 2 | 2 | 4 | 5 | 5 | 5 | 3 | 2 | 1 | 1 |
| 102 | 115 | 196 | 224 | 283 | 299 | 325 | 333 | 300 | 243 | 215 | 141 |
| 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.
