Heat Advisory

Locations Affected

Upper Lake, CA ∙ Old Hopland, CA ∙ Clearlake, CA ∙ Ukiah Municipal Airport, CA ∙ Mendocino National Forest, CA ∙ Hobergs, CA ∙ Hidden Valley Lake, CA ∙ Lakeport, CA ∙ Hopland, CA ∙ Clearlake Highlands, CA

Full Alert Message

URGENT - WEATHER MESSAGE National Weather Service Eureka CA 236 PM PDT Thu Jun 11 2026 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM PDT FRIDAY... * WHAT...High temperatures of 96 to 105 expected for most valley locations. Moderate to Major HeatRisk expected. * WHERE...Lake County, and Southeastern Interior Mendocino. * WHEN...Until 10 PM PDT Friday. * IMPACTS...Hot temperatures may cause heat illnesses especially for those without cooling or hydration. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.

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