SAN FRANCISCO (CBS SF) — Temperatures will rise starting Friday and continue through this weekend in the Bay Area, according to meteorologists.

NWS officials said the hottest days will be Saturday and Sunday, with temperatures rising as many as 10 to 15 degrees above the seasonal normal. The warmest areas in the region will be inland where temperatures may reach 100 degrees, weather service officials said.

READ MORE: 2 Killed in Separate Shootings Saturday in San Francisco Potrero Hill Neighborhood

The forecast for Saturday says afternoon temperatures will reach 100 degrees in both Concord and Fairfield. The afternoon high Saturday for Livermore and Cloverdale is forecast to be 97 degrees, according to the weather service.

Forecasters said they expect San Rafael to reach 90 degrees Saturday. The Saturday forecast for coastal locations is between 70 and 80 degrees, NWS officials said.

“Computer models suggest (an area of low pressure) is going to traverse to the east, and gradually lift to the north, allowing high pressure from the desert southwest to build in, and that’s when high pressure will be in full command, and our temperatures soar,” KPIX 5 Meteorologist Roberta Gonzales said.

Bay Area locations will cool off by Monday, forecasters said.

Weather service officials said the heat poses the greatest threat to the young, elderly, people working and exercising outside and ill people sensitive to the heat.

The warm weather also increases the risk of wildfires as brush and grass dry out, according to the NWS.

READ MORE: Saturday Shooting in Sunnyvale Kills 1; Police Arrest Suspect


  • Warmest days will be Saturday-Sunday


  • Heat– all locations will experience above normal temperatures, but interior locations will be the warmest 

*Impact 1 (Heat):

  • High Temps – Coast/Bay Shoreline: 70s and 80s     Interior: Widespread Upper 80s to 90s with warmest locations at or over 100.
  • Potential HeatImpacts for sensitive groups
  • HeatSafety Tips found here: 


*Impact 2 (Fire Weather):

  • Increased fire weather concerns due to additional drying of fuels from the warm, dry air mass and offshore flow 

TM and © Copyright 2015 CBS Radio Inc. and its relevant subsidiaries. CBS RADIO and EYE Logo TM and Copyright 2015 CBS Broadcasting Inc. Used under license. All Rights Reserved. This material may not be published, broadcast, rewritten, or redistributed. Bay City News Service contributed to this report.

MORE NEWS: Police Arrest Teen Suspect for Friday-Evening Homicide in SF Excelsior District