Climate almanac
Perth
Ontario, Canada · 44.90°, -76.25°
What is the weather like in Perth in September?
In September, Perth is typically 71°F (22°C) during the day and 53°F (11°C) at night. The month brings about 2.1 in (53 mm) of precipitation in total.
- Average high71°F (22°C)
- Average low53°F (11°C)
- Precipitation2.1 in (53 mm)
- Clear or mostly clear days11
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)