Eureka Weather in September

With daytime temperatures of 18°C (64°F) and nighttime lows of 10°C (50°F), September in Eureka brings pleasant temperatures during the day. The excellent weather makes it an appealing time to visit.

Rainfall in Eureka in September

You can expect rain on roughly 4 days based on historical data, averaging 26 mm (1 in) for the month. The odd shower may pass through, but it usually doesn't amount to much. A largely dry month overall.

Temperature in Eureka in September

September is a good time to be in Eureka. Days are excellent, reaching 18°C (64°F), with nights around 10°C (50°F). The difference between afternoon and evening temperatures is usually noticeable. With overnight lows of 10°C (50°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep. On average, it is the month with the highest temperature of the year.

If your ideal day consists of dry skies and pleasant temperatures, July, August and September typically offer the best circumstances for Eureka.