The National Weather Service has issued a heat advisory for Wednesday and Thursday for the interior regions of the Bay Area.
The heat advisory applies to the North Bay valleys, North Bay mountains, East Bay valleys, and East Bay mountains as well as the Santa Clara Valley from 11 a.m. Wednesday to 8 p.m. Thursday.
Temperatures will continue to rise in inland areas as pressure from the east continues to build over Southern California, weather officials said.
Areas in the North Bay and East Bay mountains and valleys should prepare for temperatures into the 100s, while Santa Clara County can expect highs in the 90s.
Onshore flow and a shallow marine layer will moderate temperatures near the coast, with some low clouds in the morning and night, according to weather officials.
Temperatures will peak on Wednesday and then cool slightly on Friday as low atmospheric pressure sinks down the Pacific coast.