You know, places that are in THE VALLEY generally are going to be hotter than places that are mid-coast like Anaheim, Orange, Yorba Linda, Long Beach, etc.. when it gets to be over 90 in those areas (Long Beach...) or over 100 in Anaheim, Orange, etc.. it is NOT a cooling trend because it's generally NOT the norm.
Generally the Valleys, are going to be warm. Central Valley which is somewhat NorCal does get to be 100, and when there is a HEAT WAVE it will go beyond 100, it's not the 'norm'.
The only places I know of in CA that go beyond 115 degrees are Death Valley (which I believe ... I don't think people live there..?) Palm Springs, and Palm Desert, I'm assuming places in Riverside which is pretty far inland are going to be rather hot. It's not by the ocean.
San Francisco right now is 53 degrees, give or take and humid but my goodness, I would take that over 90 degree weather.