Eureka, CA Weather: Patchy Fog Gives Way to Rain Chances Late Sunday into Monday

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EUREKA, Calif. – A cool stillness fills the Humboldt air this morning, fog curling through redwood valleys and over quiet streets. The coast feels calm for now, but Pacific moisture is already gathering offshore, ready to deliver the North Coast’s first steady rainfall of November.

According to the National Weather Service in Eureka, fog will linger through midmorning before partial clearing this afternoon. Highs reach the mid-60s inland and near 59°F along the coast—mild, calm, and deceptively peaceful. The first chance of rain develops late Sunday evening, followed by a higher likelihood Monday as a weak Pacific front sweeps across Humboldt, Del Norte, and Mendocino Counties.

Showers may bring light accumulations at first, but coastal drivers should prepare for slick conditions and limited visibility where fog and drizzle combine. Those traveling along U.S. Highway 101 and Highway 299 should watch for wet pavement and scattered low clouds, particularly during early commutes. Winds will remain light through Sunday before turning breezy near the shore Monday night.

By Tuesday, showers become more widespread, with gusts near 20 mph and steady rain likely to linger through midweek. To be fair, the rain comes at a welcome time—helping suppress lingering dry fuels and clearing late-season pollen—but it also marks the start of the North Coast’s slow transition into winter’s rhythm.

Residents are urged to check gutters, clear leaves, and allow extra travel time through fog-prone areas. The Pacific storm train appears to be waking up for November.


Five-Day Forecast for Eureka, CA:
Sat: 65/50 – Patchy fog; mostly cloudy and mild.
Sun: 59/48 – Fog early; mostly sunny afternoon.
Mon: 59/52 – Rain developing; breezy late.
Tue: 63/54 – Rain likely; patchy fog.
Wed: 59/53 – Showers taper; cool coastal breeze.