Climate almanac
Vacaville
California, United States · 38.36°, -121.99°
What is the weather like in Vacaville in December?
In December, Vacaville is typically 59°F (15°C) during the day and 43°F (6°C) at night. The month brings about 3.9 in (98 mm) of precipitation in total.
- Average high59°F (15°C)
- Average low43°F (6°C)
- Precipitation3.9 in (98 mm)
- Clear or mostly clear days7
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)