Climate almanac
Johnstown
Pennsylvania, United States · 40.33°, -78.92°
What is the weather like in Johnstown in January?
In January, Johnstown is typically 35°F (2°C) during the day and 22°F (-6°C) at night. The month brings about 4.4 in (111 mm) of precipitation in total. Snowfall averages about 13 in (336 mm) over the month.
- Average high35°F (2°C)
- Average low22°F (-6°C)
- Precipitation4.4 in (111 mm)
- Clear or mostly clear days3
- Snowfall13 in (336 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)