National Weather Service United States Department of Commerce

Check Water Temperatures Before Your River Visit

Water temperatures below 70 degrees causes you to lose breathing & muscle control which can lead to drowning. The colder the water the more extreme the impacts. Enjoy the river by staying dry when water is cold. Read More >

Eureka, CA

Weather Forecast Office

NWS Forecast Office Eureka, CA

Weather.gov > Eureka, CA
Click a location below for detailed forecast.

Last Map Update: Thu, May 28, 2026 at 12:54:10 pm PDT

Thunderstorm Chance
Sneaker Waves
Safe Boating Week
Expect another day of showers with thunderstorm chances increasing across the interior. The main focus of these storms will again be in Trinity County, though some weaker storms are also possible in NE Mendocino and Lake counties. Potential impacts from the strongest storms: ⚡ Dangerous lightning 🌧️ Localized heavy downpours 🧊 Small hail 💨 Strong erratic, gusty winds Stay weather aware!
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A very long period swell will begin building along the coast on Wednesday and peak around 7 feet on Thursday. The swell, combined with mostly calm winds Thursday, will generate a moderate risk of sneaker waves, especially on northwest facing beaches. Never turn your back on the ocean!
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Happy Safe Boating Week! There are many ways to enjoy watercrafts in Northwest California. No matter if you are in the ocean or on a lake, one of the best ways to stay safe is to wear a lifejacket. In the event of an accident, wearing a lifejacket greatly increases the odds of staying alive.
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