Climate almanac
Olney
Illinois, United States · 38.73°, -88.09°
What is the weather like in Olney in January?
In January, Olney is typically 41°F (5°C) during the day and 27°F (-3°C) at night. The month brings about 3.8 in (98 mm) of precipitation in total. Snowfall averages about 3.6 in (91 mm) over the month.
- Average high41°F (5°C)
- Average low27°F (-3°C)
- Precipitation3.8 in (98 mm)
- Clear or mostly clear days7
- Snowfall3.6 in (91 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)