California – A cold, still morning is settling over Eureka, where temperatures hovering near 40°F are already allowing frost to form on exposed surfaces, creating slick spots and potential damage to plants before mid-morning.
According to the National Weather Service, a Frost Advisory remains in effect until 9 a.m., with temperatures dipping as low as 33°F across coastal Del Norte, Humboldt, and Mendocino counties . Calm winds and clear skies are accelerating heat loss, making frost more widespread in inland valleys and low-lying areas.
Drivers along U.S. Highway 101 and local roads near Arcata, Fortuna, and McKinleyville should watch for isolated slick patches, especially on bridges and shaded curves. Visibility may also drop briefly where patchy fog forms alongside frost.
Gardeners should act quickly. Sensitive plants can suffer damage or die if left uncovered in these conditions. Cover vegetation or bring potted plants indoors before temperatures rise later this morning.
Conditions improve quickly by midday, with highs reaching near 59°F under mostly sunny skies. Saturday continues the warming trend, climbing to around 61°F with calmer conditions.
By Sunday, clouds thicken and rain chances increase, with showers developing by afternoon and becoming steadier into Sunday night. Wet roads and reduced visibility are likely, especially during evening travel.
Early next week stays unsettled, with rain continuing into Monday and Tuesday.
Five Day Outlook for Eureka, CA:
Saturday: Partly sunny, high near 61°F
Sunday: Chance of rain, high near 63°F
Monday: Rain, high near 58°F
Tuesday: Rain likely, high near 58°F
Wednesday: Chance of rain, high near 57°F
