Climate almanac
San Francisco
Morazan, El Salvador · 13.69°, -88.10°
What is the weather like in San Francisco in December?
In December, San Francisco is typically 89°F (32°C) during the day and 68°F (20°C) at night. The month brings about 0.5 in (12 mm) of precipitation in total.
- Average high89°F (32°C)
- Average low68°F (20°C)
- Precipitation0.5 in (12 mm)
- Clear or mostly clear days22
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)