Climate almanac
Wilmington
Illinois, United States · 41.31°, -88.15°
What is the weather like in Wilmington in January?
In January, Wilmington is typically 34°F (1°C) during the day and 21°F (-6°C) at night. The month brings about 2.6 in (66 mm) of precipitation in total. Snowfall averages about 7.6 in (192 mm) over the month.
- Average high34°F (1°C)
- Average low21°F (-6°C)
- Precipitation2.6 in (66 mm)
- Clear or mostly clear days6
- Snowfall7.6 in (192 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)