Data source: National Weather Service (NWS)

Winter Weather

Frost Advisory (ADVISORY) - expires October 19, 2026 at 12:00 PM EDT

Areas affected: Southern Trinity; Northwestern Interior Mendocino; Northeastern Interior Mendocino; Northern Lake

Frost Advisory issued October 18 at 5:56PM PDT until October 19 at 9:00AM PDT by NWS Eureka CA

- WHAT...Temperatures as low as 34 will result in frost formation.

• WHERE...Northern Mendocino Interior, Southern Trinity, and Northern Lake.

• WHEN...From 2 AM to 9 AM PDT Monday.

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

• ADDITIONAL DETAILS...Localized areas may see temperatures more briefly drop to 31

What to do: Take steps now to protect tender plants from the cold.

Source: NWS Eureka CA

Source

Alert data provided by the National Weather Service (NWS). This page shows active alerts only and is refreshed daily. For real-time updates, visit weather.gov.