Climate almanac
Mechanicsburg
Pennsylvania, United States · 40.21°, -77.01°
What is the weather like in Mechanicsburg in December?
In December, Mechanicsburg is typically 44°F (7°C) during the day and 31°F (0°C) at night. The month brings about 3.6 in (91 mm) of precipitation in total. Snowfall averages about 3.5 in (89 mm) over the month.
- Average high44°F (7°C)
- Average low31°F (0°C)
- Precipitation3.6 in (91 mm)
- Clear or mostly clear days5
- Snowfall3.5 in (89 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)