Climate almanac
Eureka
California, United States · 40.80°, -124.16°
What is the weather like in Eureka in September?
In September, Eureka is typically 62°F (17°C) during the day and 55°F (13°C) at night. The month brings about 1.0 in (25 mm) of precipitation in total.
- Average high62°F (17°C)
- Average low55°F (13°C)
- Precipitation1.0 in (25 mm)
- Clear or mostly clear days13
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)