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Ottawa Macdonald Cartier International Airport Monthly Climate Averages
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 22°F Lo 7°F | Hi 25°F Lo 8°F | Hi 35°F Lo 20°F | Hi 50°F Lo 33°F | Hi 65°F Lo 46°F | Hi 72°F Lo 54°F | Hi 78°F Lo 60°F | Hi 76°F Lo 59°F | Hi 69°F Lo 52°F | Hi 55°F Lo 42°F | Hi 42°F Lo 29°F | Hi 30°F Lo 18°F |
| 8 mph | 8 mph | 9 mph | 9 mph | 7 mph | 7 mph | 6 mph | 6 mph | 7 mph | 8 mph | 8 mph | 8 mph |
| 2.7 in | 2.6 in | 2.8 in | 4.3 in | 3.8 in | 4.2 in | 4.1 in | 4.4 in | 3.7 in | 4.5 in | 2.9 in | 3.5 in |
| 91% | 91% | 85% | 77% | 77% | 80% | 79% | 79% | 79% | 80% | 81% | 86% |
| 67% | 69% | 62% | 55% | 43% | 42% | 35% | 37% | 37% | 49% | 51% | 65% |
| 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 | 30.1 in | 30.0 in |
| 14 | 11 | 17 | 20 | 22 | 21 | 22 | 21 | 23 | 22 | 19 | 13 |
| 11 | 11 | 8 | 9 | 9 | 9 | 9 | 10 | 7 | 9 | 9 | 12 |
| 6 | 6 | 5 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 6 |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1 | 1 | 1 | 3 | 4 | 5 | 5 | 5 | 3 | 2 | 1 | 1 |
| 76 | 60 | 95 | 117 | 183 | 187 | 221 | 220 | 203 | 147 | 139 | 87 |
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi -5°C Lo -14°C | Hi -4°C Lo -13°C | Hi 2°C Lo -7°C | Hi 10°C Lo 1°C | Hi 18°C Lo 8°C | Hi 22°C Lo 12°C | Hi 26°C Lo 16°C | Hi 25°C Lo 15°C | Hi 21°C Lo 11°C | Hi 13°C Lo 5°C | Hi 5°C Lo -1°C | Hi -1°C Lo -8°C |
| 13 km/h | 14 km/h | 14 km/h | 14 km/h | 12 km/h | 11 km/h | 10 km/h | 10 km/h | 11 km/h | 13 km/h | 13 km/h | 13 km/h |
| 67 mm | 67 mm | 72 mm | 110 mm | 96 mm | 108 mm | 105 mm | 111 mm | 93 mm | 113 mm | 73 mm | 89 mm |
| 91% | 91% | 85% | 77% | 77% | 80% | 79% | 79% | 79% | 80% | 81% | 86% |
| 67% | 69% | 62% | 55% | 43% | 42% | 35% | 37% | 37% | 49% | 51% | 65% |
| 1017 mb | 1017 mb | 1018 mb | 1014 mb | 1015 mb | 1012 mb | 1013 mb | 1014 mb | 1017 mb | 1016 mb | 1018 mb | 1017 mb |
| 14 | 11 | 17 | 20 | 22 | 21 | 22 | 21 | 23 | 22 | 19 | 13 |
| 11 | 11 | 8 | 9 | 9 | 9 | 9 | 10 | 7 | 9 | 9 | 12 |
| 6 | 6 | 5 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 6 |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1 | 1 | 1 | 3 | 4 | 5 | 5 | 5 | 3 | 2 | 1 | 1 |
| 76 | 60 | 95 | 117 | 183 | 187 | 221 | 220 | 203 | 147 | 139 | 87 |
| 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.