Climate almanac
Nepean
Ontario, Canada · 45.34°, -75.72°
What is the weather like in Nepean in September?
In September, Nepean is typically 72°F (22°C) during the day and 52°F (11°C) at night. The month brings about 2.3 in (59 mm) of precipitation in total.
- Average high72°F (22°C)
- Average low52°F (11°C)
- Precipitation2.3 in (59 mm)
- Clear or mostly clear days11
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)