Climate almanac
St. Thomas
Ontario, Canada · 42.77°, -81.18°
What is the weather like in St. Thomas in August?
In August, St. Thomas is typically 77°F (25°C) during the day and 65°F (18°C) at night. The month brings about 3.8 in (97 mm) of precipitation in total.
- Average high77°F (25°C)
- Average low65°F (18°C)
- Precipitation3.8 in (97 mm)
- Clear or mostly clear days13
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)