Climate almanac
Jerseyville
Illinois, United States · 39.12°, -90.33°
What is the weather like in Jerseyville in December?
In December, Jerseyville is typically 46°F (8°C) during the day and 31°F (-1°C) at night. The month brings about 2.2 in (56 mm) of precipitation in total. Snowfall averages about 1.5 in (39 mm) over the month.
- Average high46°F (8°C)
- Average low31°F (-1°C)
- Precipitation2.2 in (56 mm)
- Clear or mostly clear days8
- Snowfall1.5 in (39 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)