Eureka, Calif. – Dense fog could blanket Humboldt County’s coastal highways Thursday morning, making early commutes along U.S. 101 tricky for drivers. Reduced visibility may slow travel, especially near Eureka, Arcata, and Fortuna, where fog tends to linger through late morning hours.
According to the National Weather Service, patchy fog is expected Thursday night and again Friday night before clearer skies return Saturday. Daytime highs will hover in the mid-60s, with Thursday reaching near 66°F. West winds will stay light, topping out around 6 mph, offering mild fall-like conditions but little relief from lingering coastal mist.
Drivers should allow extra travel time Thursday and Friday mornings, particularly on rural stretches of Highway 101 where fog pockets can reduce sight lines. Public safety officials urge residents to use headlights in low-visibility zones and avoid speeding on slick roads where fog moisture clings.
By Saturday, conditions will improve significantly. The fog is forecast to lift earlier, allowing partly sunny skies and warmer temperatures near 68°F. Sunday brings a chance of showers, signaling an early taste of fall weather before another round of unsettled skies enters Monday and Tuesday.
Residents planning outdoor events this weekend can expect better conditions by midday Saturday, with cooler, damp mornings followed by clearer afternoons. The improvement should hold through Saturday night, offering more favorable weather for community events and late-summer gatherings.
Patchy fog remains the main hazard through Friday, but clearer skies and mild fall temperatures are expected into the weekend.
Five-Day Forecast for Eureka, California
- Thursday: Mostly cloudy, high near 66°F. Patchy fog overnight, low near 56°F.
- Friday: Fog early, mostly cloudy, high near 64°F. Fog again overnight, low near 54°F.
- Saturday: Morning fog, then partly sunny, high near 68°F. Low near 56°F.
- Sunday: Chance of showers, mostly cloudy, high near 67°F. Low around 56°F.
- Monday: Chance of showers, high near 66°F. Showers continue overnight, low near 56°F.
