Climate almanac
Cornwall
Ontario, Canada · 45.02°, -74.73°
What is the weather like in Cornwall in March?
In March, Cornwall is typically 40°F (5°C) during the day and 24°F (-4°C) at night. The month brings about 3.7 in (94 mm) of precipitation in total. Snowfall averages about 9.2 in (234 mm) over the month.
- Average high40°F (5°C)
- Average low24°F (-4°C)
- Precipitation3.7 in (94 mm)
- Clear or mostly clear days5
- Snowfall9.2 in (234 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)