Climate almanac
El Cajon
California, United States · 32.79°, -116.96°
What is the weather like in El Cajon in September?
In September, El Cajon is typically 80°F (27°C) during the day and 65°F (18°C) at night. The month brings about 0.4 in (10 mm) of precipitation in total.
- Average high80°F (27°C)
- Average low65°F (18°C)
- Precipitation0.4 in (10 mm)
- Clear or mostly clear days20
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)