Climate almanac
Discovery Bay
California, United States · 37.91°, -121.60°
What is the weather like in Discovery Bay in December?
In December, Discovery Bay is typically 59°F (15°C) during the day and 43°F (6°C) at night. The month brings about 3.8 in (97 mm) of precipitation in total.
- Average high59°F (15°C)
- Average low43°F (6°C)
- Precipitation3.8 in (97 mm)
- Clear or mostly clear days7
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)