Climate almanac
Simi Valley
California, United States · 34.27°, -118.78°
What is the weather like in Simi Valley in January?
In January, Simi Valley is typically 65°F (18°C) during the day and 46°F (8°C) at night. The month brings about 3.6 in (92 mm) of precipitation in total.
- Average high65°F (18°C)
- Average low46°F (8°C)
- Precipitation3.6 in (92 mm)
- Clear or mostly clear days14
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)