Climate almanac
Fairfax
California, United States · 37.99°, -122.59°
What is the weather like in Fairfax in January?
In January, Fairfax is typically 58°F (14°C) during the day and 46°F (8°C) at night. The month brings about 5.0 in (126 mm) of precipitation in total.
- Average high58°F (14°C)
- Average low46°F (8°C)
- Precipitation5.0 in (126 mm)
- Clear or mostly clear days7
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)