WeatherWX.com
Cornwall Monthly Climate Averages
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 36°F Lo 23°F | Hi 39°F Lo 24°F | Hi 48°F Lo 31°F | Hi 60°F Lo 41°F | Hi 70°F Lo 52°F | Hi 78°F Lo 60°F | Hi 84°F Lo 65°F | Hi 82°F Lo 64°F | Hi 75°F Lo 57°F | Hi 63°F Lo 47°F | Hi 51°F Lo 35°F | Hi 42°F Lo 29°F |
| 8 mph | 8 mph | 9 mph | 8 mph | 7 mph | 6 mph | 5 mph | 5 mph | 6 mph | 7 mph | 7 mph | 8 mph |
| 3 in | 3.3 in | 3.5 in | 4 in | 3.8 in | 4.1 in | 4.3 in | 4.4 in | 4.4 in | 4.1 in | 3 in | 3.9 in |
| 78% | 80% | 76% | 75% | 80% | 79% | 78% | 79% | 79% | 80% | 77% | 80% |
| 49% | 51% | 48% | 48% | 47% | 39% | 34% | 35% | 37% | 42% | 39% | 50% |
| 30.1 in | 30.1 in | 30.1 in | 30.0 in | 30.0 in | 29.9 in | 30.0 in | 30.0 in | 30.1 in | 30.0 in | 30.1 in | 30.1 in |
| 19 | 16 | 21 | 23 | 22 | 20 | 21 | 22 | 23 | 24 | 24 | 21 |
| 8 | 8 | 7 | 7 | 9 | 10 | 10 | 9 | 7 | 7 | 5 | 8 |
| 4 | 5 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1 | 2 | 2 | 3 | 5 | 5 | 5 | 5 | 4 | 3 | 2 | 1 |
| 144 | 131 | 148 | 153 | 168 | 203 | 231 | 225 | 214 | 184 | 190 | 150 |
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 2°C Lo -5°C | Hi 4°C Lo -5°C | Hi 9°C Lo -0°C | Hi 16°C Lo 5°C | Hi 21°C Lo 11°C | Hi 26°C Lo 15°C | Hi 29°C Lo 19°C | Hi 28°C Lo 18°C | Hi 24°C Lo 14°C | Hi 17°C Lo 8°C | Hi 10°C Lo 2°C | Hi 5°C Lo -2°C |
| 13 km/h | 13 km/h | 14 km/h | 13 km/h | 11 km/h | 10 km/h | 8 km/h | 8 km/h | 9 km/h | 11 km/h | 12 km/h | 13 km/h |
| 75 mm | 84 mm | 89 mm | 103 mm | 97 mm | 103 mm | 109 mm | 112 mm | 111 mm | 105 mm | 75 mm | 98 mm |
| 78% | 80% | 76% | 75% | 80% | 79% | 78% | 79% | 79% | 80% | 77% | 80% |
| 49% | 51% | 48% | 48% | 47% | 39% | 34% | 35% | 37% | 42% | 39% | 50% |
| 1019 mb | 1019 mb | 1019 mb | 1016 mb | 1017 mb | 1014 mb | 1015 mb | 1016 mb | 1018 mb | 1017 mb | 1021 mb | 1019 mb |
| 19 | 16 | 21 | 23 | 22 | 20 | 21 | 22 | 23 | 24 | 24 | 21 |
| 8 | 8 | 7 | 7 | 9 | 10 | 10 | 9 | 7 | 7 | 5 | 8 |
| 4 | 5 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1 | 2 | 2 | 3 | 5 | 5 | 5 | 5 | 4 | 3 | 2 | 1 |
| 144 | 131 | 148 | 153 | 168 | 203 | 231 | 225 | 214 | 184 | 190 | 150 |
| 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.