Climate almanac
St. Marys
Ontario, Canada · 43.25°, -81.13°
What is the weather like in St. Marys in January?
In January, St. Marys is typically 30°F (-1°C) during the day and 19°F (-7°C) at night. The month brings about 3.4 in (85 mm) of precipitation in total. Snowfall averages about 13 in (333 mm) over the month.
- Average high30°F (-1°C)
- Average low19°F (-7°C)
- Precipitation3.4 in (85 mm)
- Clear or mostly clear days1
- Snowfall13 in (333 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)