Climate almanac
Fairfield
Illinois, United States · 42.22°, -88.06°
What is the weather like in Fairfield in January?
In January, Fairfield is typically 32°F (0°C) during the day and 21°F (-6°C) at night. The month brings about 2.7 in (69 mm) of precipitation in total. Snowfall averages about 9.8 in (249 mm) over the month.
- Average high32°F (0°C)
- Average low21°F (-6°C)
- Precipitation2.7 in (69 mm)
- Clear or mostly clear days4
- Snowfall9.8 in (249 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)