Climate almanac
Lake Forest
California, United States · 33.65°, -117.69°
What is the weather like in Lake Forest in January?
In January, Lake Forest is typically 66°F (19°C) during the day and 48°F (9°C) at night. The month brings about 3.2 in (82 mm) of precipitation in total.
- Average high66°F (19°C)
- Average low48°F (9°C)
- Precipitation3.2 in (82 mm)
- Clear or mostly clear days12
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)