UPDATE: Frost advisory in place for Southwestern Mendocino Interior until Thursday morning

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At 3:08 a.m. on Thursday, the NWS Eureka CA issued an updated frost advisory in effect until 9 a.m. for Southwestern Mendocino Interior.

The NWS comments, "Take steps now to protect tender plants from the cold."

This advisory is in effect until 9 a.m.

What to do if there is a frost advisory

Frost advisories are issued from May to October (but can be extended if necessary) when temperatures, winds, and sky cover are favorable for frost development. This is most likely to happen when the temperature is 36 degrees or less. In some cases, the frost is severe enough to end the growing season and is then referred to as a 'killing frost'.

According to the NWS, if a frost advisory is issued for your area, cover up sensitive plants before the sun sets so that it can help retain heat near the plants, or move the plants indoors for the night, if possible.

Source: The National Weather Service

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This story was originally published April 15, 2026 at 2:59 PM.