EUREKA, Calif. – Gray skies stretch low over Humboldt Bay this morning as the Pacific’s calm surface mirrors the cool, still air. It’s a classic North Coast start—muted light, damp streets, and that faint ocean scent that clings before the day brightens.
According to the National Weather Service in Eureka, cloud cover will thin by late morning as light northwest winds develop, pushing inland temperatures near 62°F this afternoon. A mild stretch continues through Friday, with highs holding in the low 60s and overnight lows near 50°F. Coastal fog will form again late tonight and Thursday morning, reducing visibility on U.S. 101 and local backroads before burning away by midday.
By Halloween Friday, skies turn partly sunny across Eureka, Arcata, and Fortuna, bringing ideal trick-or-treat weather. Evening temperatures will dip into the mid-50s—cool but comfortable for families headed downtown or along neighborhood routes. Costumes may need an extra layer, but rain chances stay minimal until after midnight.
Late Friday night into Saturday, models hint at a weak coastal front brushing the region, delivering spotty light rain and renewed patchy fog. The system clears quickly Sunday, leaving another calm, partly sunny stretch to end the weekend.
To be fair, Humboldt’s fall rhythm is steady—no harsh cold snaps yet, just the gentle slide toward November.
After all, clocks fall back at 2 a.m. Sunday, marking earlier sunsets and the first whispers of winter along California’s far north coast.
Five-Day Forecast for Eureka, CA:
Wed: 62/50 – Cloudy, then gradual clearing; light northwest breeze.
Thu: 58/47 – Patchy fog early, then cloudy and cool.
Fri: 61/51 – Partly sunny; pleasant Halloween evening.
Sat: 64/52 – Chance of showers; patchy fog late.
Sun: 60/50 – Partly sunny; light breeze, seasonal.
