Climate almanac
Thunder Bay
Ontario, Canada · 48.38°, -89.25°
What is the weather like in Thunder Bay in January?
In January, Thunder Bay is typically 18°F (-8°C) during the day and 4°F (-16°C) at night. The month brings about 1.3 in (34 mm) of precipitation in total. Snowfall averages about 9.1 in (230 mm) over the month.
- Average high18°F (-8°C)
- Average low4°F (-16°C)
- Precipitation1.3 in (34 mm)
- Clear or mostly clear days5
- Snowfall9.1 in (230 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)