Climate almanac
Dunnville
Ontario, Canada · 42.90°, -79.62°
What is the weather like in Dunnville in September?
In September, Dunnville is typically 71°F (21°C) during the day and 62°F (17°C) at night. The month brings about 2.6 in (65 mm) of precipitation in total.
- Average high71°F (21°C)
- Average low62°F (17°C)
- Precipitation2.6 in (65 mm)
- Clear or mostly clear days12
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)