Climate almanac
Fountain Valley
California, United States · 33.71°, -117.95°
What is the weather like in Fountain Valley in December?
In December, Fountain Valley is typically 67°F (19°C) during the day and 51°F (10°C) at night. The month brings about 2.3 in (60 mm) of precipitation in total.
- Average high67°F (19°C)
- Average low51°F (10°C)
- Precipitation2.3 in (60 mm)
- Clear or mostly clear days12
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)