It’s the first full day of fall, and pumpkin patches are popping up around the Bay Area. But the crisp, cool air of autumn that usually accompanies fall activities will disappear for a few days this week as temperatures are forecast to spike in inland parts of the Bay Area and the Sacramento Valley.
“This is easily the warmest part of our month, but the heat we’re seeing is a little higher than our seasonal average,” said Dial Hoang, a meteorologist with the National Weather Service’s Bay Area office.
The weather service has issued a heat advisory through Monday at 8 p.m. for the interior East Bay, South Bay and Santa Cruz Mountains. Another heat advisory begins Tuesday at 11 a.m. for the East Bay hills and interior valleys and ends in the evening. Forecasters expect places like Livermore, Concord and Cloverdale to reach close to 100 degrees — 15 to 20 degrees above the seasonal average — and Sacramento to reach the triple digits.