UPDATE: Excessive Heat Warning Extended Through Thursday, September 8th

Posted on September 2, 2022

A map of the bay area with some areas in dark pink indicating an excessive heat warning and areas in orange indicating an excessive heat watch.

The excessive heat warning has been extended through Thursday, September 8th.

The National Weather Service has issued an Excessive Heat Warning effective 11:00 AM Sunday, September 4th – 8:00 PM Tuesday, September 6th for most of the San Francisco Bay Area including the City of Sonoma and Sonoma Valley. Dangerously hot conditions with temperatures in the upper 90s to 108 are expected with mild to warm overnight temperatures providing little relief from the heat.

Extreme heat will significantly increase the potential for heat-related illnesses, particularly for those working or participating in outdoor activities.

Blue flyer with white text in English and graphics of popsicles and water
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Blue flyer with white text in Spanish and graphics of popsicles and water
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Sonoma Overnight Support (SOS) will be operating a cooling station with water and popsicles at the Sonoma Valley Grange Hall located at 18627 Sonoma Highway 12 (across from Mary’s Pizza Shack) from 1:00 pm – 4:00 pm on Sunday, September 4th, and Monday, September 5th. All are welcome. 


Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances.

Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose-fitting clothing when possible. 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.

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