bay area weather September 19, 2024 11:33 pm Forecast: Early fog chance as temps to soar by the weekend Chief Meteorologist Jeff Ranieri has the latest on how much fog you’ll see during the commute and examines the increasing temps this weekend in your seven-day Microclimate Forecast. US & World Videos 3:12 Cinthia's Forecast: Valley heat ahead 2:36 Jeff's Forecast: Morning fog as inland temps heat up 3:29 Jeff's forecast: Heat makes a comeback this weekend 2:41 Kari's forecast: Summer heat this weekend 1:51 Kari's forecast: Summer heat returns