Climate almanac
West Mifflin
Pennsylvania, United States · 40.36°, -79.87°
What is the weather like in West Mifflin in December?
In December, West Mifflin is typically 44°F (6°C) during the day and 31°F (-1°C) at night. The month brings about 4.0 in (101 mm) of precipitation in total. Snowfall averages about 4.9 in (124 mm) over the month.
- Average high44°F (6°C)
- Average low31°F (-1°C)
- Precipitation4.0 in (101 mm)
- Clear or mostly clear days3
- Snowfall4.9 in (124 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)