About Cornwall, 09's Climate & Weather History

Cornwall is a city of approximately 6,600 people in Prince Edward Island, Canada. Located in the America/Halifax time zone at 46.2°N latitude.

In 2025, Cornwall recorded an average annual temperature of 45°F. The hottest temperatures reached 87°F in August; the coolest were -2°F in February. Total precipitation for the year was 40 inches, with the wettest month being November. Snowfall for the year totaled approximately 22 inches.