Climate almanac
Fairfield
New Jersey, United States · 40.88°, -74.31°
What is the weather like in Fairfield in December?
In December, Fairfield is typically 42°F (6°C) during the day and 30°F (-1°C) at night. The month brings about 4.3 in (110 mm) of precipitation in total. Snowfall averages about 5.2 in (131 mm) over the month.
- Average high42°F (6°C)
- Average low30°F (-1°C)
- Precipitation4.3 in (110 mm)
- Clear or mostly clear days9
- Snowfall5.2 in (131 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)