Frost Advisory for Northwestern Interior Mendocino, Northeastern Interior Mendocino and Northern Lake, California

In effect until 9:00 AM PST, Tuesday, November 3, 2026.

Issued by the National Weather Service in Eureka at 12:00 PM PST, Monday, November 2, 2026.

The Weather Service's text

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

WHERE...Northern Mendocino Interior, and Northern Lake.

WHEN...From midnight tonight to 9 AM PST Tuesday.

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

What to do

Take steps now to protect tender plants from the cold.