A Freeze Warning is in effect for the North Bay until 9 a.m. and a Frost Advisory is in effect until 9 a.m. for the San Francisco Shoreline and Santa Clara Valley. Residents are advised to keep their pets and plants protected.
It's a Spare the Air day and it's possible another one will be issued tomorrow.
Mike Nicco's forecast calls for high pressure to bring the Bay Area another mostly sunny day with highs slightly cooler than average. Tonight will be frosty cold Inland, but not as likely around the Bay shoreline.