Climate almanac
Sarnia
Ontario, Canada · 42.98°, -82.40°
What is the weather like in Sarnia in July?
In July, Sarnia is typically 80°F (27°C) during the day and 66°F (19°C) at night. The month brings about 3.6 in (92 mm) of precipitation in total.
- Average high80°F (27°C)
- Average low66°F (19°C)
- Precipitation3.6 in (92 mm)
- Clear or mostly clear days13
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)