Climate almanac
New Castle
Pennsylvania, United States · 41.00°, -80.35°
What is the weather like in New Castle in December?
In December, New Castle is typically 41°F (5°C) during the day and 28°F (-2°C) at night. The month brings about 3.9 in (98 mm) of precipitation in total. Snowfall averages about 6.5 in (165 mm) over the month.
- Average high41°F (5°C)
- Average low28°F (-2°C)
- Precipitation3.9 in (98 mm)
- Clear or mostly clear days2
- Snowfall6.5 in (165 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)