Climate almanac
Quincy
Illinois, United States · 39.94°, -91.41°
What is the weather like in Quincy in December?
In December, Quincy is typically 44°F (7°C) during the day and 28°F (-2°C) at night. The month brings about 2.1 in (54 mm) of precipitation in total. Snowfall averages about 1.8 in (45 mm) over the month.
- Average high44°F (7°C)
- Average low28°F (-2°C)
- Precipitation2.1 in (54 mm)
- Clear or mostly clear days9
- Snowfall1.8 in (45 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)