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Mendocino County Alerts
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Updated:June 12, 2026 10:30 pm PDT

Heat Advisory HEAT ADVISORY  
Mendocino County

Effective: Fri, 6/12 9:48pm Severity:  Moderate 
Updated: June 12, 2026 10:30 pm Urgency: Expected
Expires: Sat, 6/13 8:00am Certainty: Likely

Areas Affected: Southeastern Interior Mendocino - Northern Lake - Western Lake - Southwestern Lake - Eastern Lake
 
Alert Details:
* WHAT...High temperatures of 96 to 102 expected for most valley
locations.  Moderate to Major HeatRisk expected.

* WHERE...Lake County, and Southeastern Interior Mendocino.

* WHEN...Until 10 PM PDT Saturday.

* IMPACTS...Hot temperatures may cause heat illnesses especially for
those without cooling or hydration.

Information:
Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.
Heat Advisory HEAT ADVISORY  
Mendocino County

Effective: Fri, 6/12 9:48pm Severity:  Moderate 
Updated: June 12, 2026 10:30 pm Urgency: Expected
Expires: Sat, 6/13 8:00am Certainty: Likely

Areas Affected: Northeastern Interior Mendocino
 
Alert Details:
* WHAT...High temperatures of 99 to 105. Moderate to Major HeatRisk
expected.

* WHERE...Northeastern Interior Mendocino.

* WHEN...From 11 AM Sunday to 10 PM PDT Tuesday.

* IMPACTS...Hot temperatures may cause heat illnesses especially for
those without cooling or hydration.

Information:
Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.

To reduce risk during outdoor work, the Occupational Safety and
Health Administration recommends scheduling frequent rest breaks in
shaded or air conditioned environments. Anyone overcome by heat
should be moved to a cool and shaded location. Heat stroke is an
emergency! Call 9 1 1.