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Mendocino County Alerts
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Updated:April 16, 2026 2:31 am PDT

Freeze Warning FREEZE WARNING  
Mendocino County

  Effective: Wed, 4/15 9:55pm Severity:  Moderate 
  Updated: April 16, 2026 2:31 am Urgency: Expected
  Expires: Thu, 4/16 6:00am Certainty: Likely

Areas Affected: Del Norte Interior - Northern Humboldt Interior - Southern Humboldt Interior - Northern Trinity - Southern Trinity - Northwestern Mendocino Interior - Northeastern Mendocino Interior - Southeastern Mendocino Interior - Northern Lake County - Southern Lake County
 
Alert Details:
* WHAT...Sub-freezing temperatures as low as 26 expected.

* WHERE...Trinity County, Lake County, Humboldt Interior, Northern
Mendocino Interior, Del Norte Interior, and Southeastern Mendocino
Interior.

* WHEN...Until 9 AM PDT Thursday.

* IMPACTS...Frost and freeze conditions could kill crops, other
sensitive vegetation and possibly damage unprotected outdoor
plumbing.

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

To prevent water pipes from freezing; wrap or drain or allow them to
drip slowly.
Frost Advisory FROST ADVISORY  
Mendocino County

  Effective: Wed, 4/15 9:55pm Severity: Minor
  Updated: April 16, 2026 2:31 am Urgency: Expected
  Expires: Thu, 4/16 6:00am Certainty: Likely

Areas Affected: Coastal Del Norte - Northern Humboldt Coast - Southwestern Humboldt - Mendocino Coast
 
Alert Details:
* WHAT...Temperatures as low as 33 will result in frost formation.

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

* WHEN...Until 9 AM PDT Thursday.

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

Information:
Take steps now to protect tender plants from the cold.
Frost Advisory FROST ADVISORY  
Mendocino County

  Effective: Wed, 4/15 9:55pm Severity: Minor
  Updated: April 16, 2026 2:31 am Urgency: Expected
  Expires: Thu, 4/16 6:00am Certainty: Likely

Areas Affected: Southwestern Mendocino Interior
 
Alert Details:
* WHAT...Temperatures as low as 33 will result in frost formation.

* WHERE...Southwestern Mendocino Interior.

* WHEN...Until 9 AM PDT Thursday.

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

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