Typical Weather in Eureka, CA in September

64° F Avg High

51° F Avg Low

2 Rainy Days

☀️ Temperature Summary

Highs in September are typically around 64°F, which is warmer than usual in Eureka. You can expect overnight lows near 51°F most days. Daily high temperatures can range between 64°F and 63°F, and typically fall throughout the month.

September is a great time to visit Eureka, with mild temperatures and sunny days being very common.

High Temps Throughout the Year

☔ Rain Summary

You can expect about a 6% chance of rain for any given day in September. It's one of the drier months of the year for Eureka, with total rainfall for the month around 1 inches.