Memorial Day Forecast: Here’s How Hot It Could Get in Some Bay Area Cities

The heat is on this Memorial Day.

Triple-digit temperatures are expected to bake much of the North Bay and inland East Bay Monday afternoon, weather officials say.

The scorching temperatures prompted the National Weather Service to issue a heat advisory for those areas, as well as a section of the South Bay, from noon Monday until 9 p.m. An excessive heat warning will be in effect for Solano County during that same time period.

The heat advisory will be in effect in these following areas from noon to 9 p.m. on Monday:

  • Santa Clara County
  • Sonoma County 
  • Napa County 
  • Marin County 
  • Contra Costa County 
  • Alameda County 

Here’s how hot it could get in some Bay Area cities, according to the weather service:

  • Cloverdale: 104 degrees
  • Santa Rosa: 101 degrees
  • Napa: 100 degrees
  • San Rafael: 95 degrees
  • Concord: 103 degrees
  • Livermore: 102 degrees
  • Half Moon Bay: 76 degrees
  • San Francisco: 79 degrees
  • San Jose: 95 degrees 
  • Santa Cruz: 86 degrees

People are advised to limit their outdoor activity during the hottest time of the day, drink plenty of water, and pay special attention to pets and children.

Sunday will also be hot, with mid-90s to upper-90s expected in the inland East Bay and parts of the North Bay.

“Heat Risk concerns are not just in the Bay Area, but a large portion of Northern California and the Central Valley,” the weather service tweeted Sunday. Over 9 million people are under a heat advisory or excessive heat warning.

With the soaring temperatures comes an increased risk of wildfires in the state where vegetation is extremely dry after a winter and spring with relatively little rain and snow.

California’s power grid operator said Saturday it’s not anticipating energy supply outages during the heat wave.

There’s enough electricity to serve the expected spike in demand, California Independent System Operator said in a statement, but it will monitor the grid closely in case it needs to call on the public to conserve.

ISO has said the state is better prepared to avoid last summer’s rotating blackouts.

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