Climate almanac
Brockville
Ontario, Canada · 44.59°, -75.69°
What is the weather like in Brockville in September?
In September, Brockville is typically 72°F (22°C) during the day and 55°F (13°C) at night. The month brings about 2.7 in (70 mm) of precipitation in total.
- Average high72°F (22°C)
- Average low55°F (13°C)
- Precipitation2.7 in (70 mm)
- Clear or mostly clear days10
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)