Climate almanac
Oshawa
Ontario, Canada · 43.90°, -78.85°
What is the weather like in Oshawa in September?
In September, Oshawa is typically 72°F (22°C) during the day and 55°F (13°C) at night. The month brings about 2.5 in (63 mm) of precipitation in total.
- Average high72°F (22°C)
- Average low55°F (13°C)
- Precipitation2.5 in (63 mm)
- Clear or mostly clear days12
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)