Climate almanac
South Beloit
Illinois, United States · 42.49°, -89.04°
What is the weather like in South Beloit in December?
In December, South Beloit is typically 36°F (2°C) during the day and 24°F (-5°C) at night. The month brings about 2.2 in (55 mm) of precipitation in total. Snowfall averages about 5.5 in (141 mm) over the month.
- Average high36°F (2°C)
- Average low24°F (-5°C)
- Precipitation2.2 in (55 mm)
- Clear or mostly clear days6
- Snowfall5.5 in (141 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)