bay area weather 5 hours ago Jeff's Forecast: Bay Area temps surge Friday Chief Meteorologist Jeff Ranieri tracks the much hotter weather coming Friday and what it means for the weekend in your 7 day Microclimate Forecast. US & World Videos 3:54 Jeff's Forecast: Hot 90s return and Hurricane Helene path 2:34 Forecast: Warming trend on the way 2:12 Kari's forecast: Warming trend on the way 2:49 Jeff's Forecast: Foggy start and how much we'll heat by the afternoon 1:52 Hurricane Helene intensifies ahead of Florida landing