California — Thick coastal fog clings to Humboldt Bay this morning, dimming streetlights and softening the view along Highway 101. Drivers creeping through Eureka’s waterfront streets are encountering reduced visibility early, though the gray layer will slowly lift as sunshine returns later today.
According to the National Weather Service in Eureka, patchy dense fog will persist through early morning before clearing skies allow temperatures to climb into the lower 60s this afternoon. Visibility may drop below a mile in some coastal neighborhoods before the marine layer breaks.
Once the fog clears, a quiet stretch of early spring weather settles across Northern California’s coast. Light winds and increasing sunshine will push temperatures upward through midweek. Eureka climbs into the mid-60s by Tuesday and Wednesday, with highs reaching around 66°F across the city.
Morning fog remains the main travel concern. Motorists along US-101, State Route 255, and coastal roads near Arcata Bay should expect damp pavement and low visibility during early commuting hours. Allow extra stopping distance and keep headlights on until the fog thins.
The broader western U.S. pattern features strengthening high pressure, which is already driving unusual heat farther south across California. Along the North Coast, the ocean influence keeps conditions milder but still noticeably warmer than typical March mornings.
Nights stay cool and calm through midweek. Temperatures drop into the mid-40s, allowing some patchy fog to redevelop before sunrise in low-lying coastal areas.
Meteorologists expect mostly sunny conditions to dominate the middle of the week. By Wednesday afternoon, skies should remain bright across Humboldt County with comfortable temperatures near the upper 60s.
Residents planning outdoor activities should enjoy the improving conditions after the morning fog lifts. Clearer skies and light winds will make for pleasant coastal afternoons.
Five Day Forecast for Eureka, California
Monday: Patchy dense fog early, then sunny. High near 63°F.
Tuesday: Mostly sunny and mild. High near 66°F.
Wednesday: Mostly sunny with light winds. High near 66°F.
Thursday: Mostly sunny and warmer. High near 68°F.
Friday: Mostly sunny with coastal breeze. High near 66°F.
