A heat advisory issued by the National Weather Service for the Bay Area has been upgraded to an excessive heat warning on Thursday for some of the hotter inland areas of the North Bay mountains and the East Bay valleys and hills.
The heat advisory has also been extended until Thursday evening for most inland areas and expanded to the San Francisco Bay shoreline, including Berkeley, Oakland, Fremont, Redwood City and San Mateo – but not San Francisco.
Coastal locations will be near normal, but inland weather is expected to be roughly 20 degrees hotter than usual.
Temperatures will rise an estimated two to five degrees from Tuesday to Wednesday, then another two to five degrees on Thursday – and some areas may exceed 110 degrees.
The weather will begin to cool off Friday, continuing into the weekend.