Climate almanac
Sarnia
Ontario, Canada · 42.98°, -82.40°
What is the weather like in Sarnia in May?
In May, Sarnia is typically 65°F (19°C) during the day and 50°F (10°C) at night. The month brings about 3.2 in (81 mm) of precipitation in total.
- Average high65°F (19°C)
- Average low50°F (10°C)
- Precipitation3.2 in (81 mm)
- Clear or mostly clear days8
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)