Climate almanac
Grafton
Wisconsin, United States · 43.32°, -87.95°
What is the weather like in Grafton in January?
In January, Grafton is typically 30°F (-1°C) during the day and 20°F (-7°C) at night. The month brings about 2.2 in (57 mm) of precipitation in total. Snowfall averages about 9.9 in (253 mm) over the month.
- Average high30°F (-1°C)
- Average low20°F (-7°C)
- Precipitation2.2 in (57 mm)
- Clear or mostly clear days5
- Snowfall9.9 in (253 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)