Climate almanac
Oshawa
Ontario, Canada · 43.90°, -78.85°
What is the weather like in Oshawa in December?
In December, Oshawa is typically 35°F (1°C) during the day and 24°F (-5°C) at night. The month brings about 3.3 in (84 mm) of precipitation in total. Snowfall averages about 11 in (272 mm) over the month.
- Average high35°F (1°C)
- Average low24°F (-5°C)
- Precipitation3.3 in (84 mm)
- Clear or mostly clear days3
- Snowfall11 in (272 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)