Climate almanac
Folsom
Pennsylvania, United States · 39.89°, -75.33°
What is the weather like in Folsom in January?
In January, Folsom is typically 42°F (6°C) during the day and 30°F (-1°C) at night. The month brings about 3.3 in (84 mm) of precipitation in total. Snowfall averages about 5.3 in (136 mm) over the month.
- Average high42°F (6°C)
- Average low30°F (-1°C)
- Precipitation3.3 in (84 mm)
- Clear or mostly clear days10
- Snowfall5.3 in (136 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)