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Frost Advisory — Coastal Del Norte, CA, Interior Del Norte, CA, Northern Coastal Humboldt, CA, Southwestern Humboldt, CA, Northeastern Interior Humboldt, CA, Southeastern Interior Humboldt, CA, Coastal Mendocino, CA, Southwestern Interior Mendocino, CA
Issued
3:00 a. m. CDT · jue., oct. 29 2026
Expires
11:00 a. m. CDT · jue., oct. 29 2026
Issuing Office
NWS KEKA

Affected Areas

Coastal Del Norte, CA Interior Del Norte, CA Northern Coastal Humboldt, CA Southwestern Humboldt, CA Northeastern Interior Humboldt, CA Southeastern Interior Humboldt, CA Coastal Mendocino, CA Southwestern Interior Mendocino, CA

Official Bulletin

* WHAT...Temperatures as low as 33 will result in frost formation.

* WHERE...Del Norte, Humboldt, and Mendocino Coast, Humboldt
Interior, Interior Del Norte, and Southwestern Interior Mendocino.

* WHEN...From 1 AM to 9 AM PDT Thursday.

* IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive
outdoor plants may be killed if left uncovered.

* ADDITIONAL DETAILS...Some valleys, especially closer to the coast,
may experience low cloud cover and/or fog, which will limit the
potential for frost.

Take steps now to protect tender plants from the cold.