Eureka Weather Forecast

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Last Updated: January 5, 2026

Eureka, California is a coastal city located in Humboldt County.


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Summary

The city has a mild Mediterranean climate with an average temperature of around 60°F. The region experiences high precipitation throughout the year, with most rain falling between November and April. The city also experiences foggy weather due to its proximity to the Pacific Ocean. The hydrology constituents of the region include forests, rivers, and wetlands. The city is surrounded by beautiful redwood forests and is home to several parks and hiking trails, including the Humboldt Bay National Wildlife Refuge and the Arcata Community Forest. Outdoor enthusiasts can enjoy activities like kayaking, fishing, and camping in the nearby areas.

       

Weather Forecast

Eureka receives approximately 1017mm of rain per year, with humidity levels near 72% and air temperatures averaging around 12°C. Eureka has a plant hardyness factor of 9, meaning plants and agriculture in this region tend to thrive here all year round.