Climate almanac
Hillsboro
Illinois, United States · 39.16°, -89.50°
What is the weather like in Hillsboro in January?
In January, Hillsboro is typically 38°F (3°C) during the day and 24°F (-4°C) at night. The month brings about 2.9 in (73 mm) of precipitation in total. Snowfall averages about 4.4 in (112 mm) over the month.
- Average high38°F (3°C)
- Average low24°F (-4°C)
- Precipitation2.9 in (73 mm)
- Clear or mostly clear days8
- Snowfall4.4 in (112 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)