bay area weather 18 hours ago Vianey's forecast: Heat wave persists Meteorologist Vianey Arana tracks dangerous heat in your Microclimate Weather forecast. US & World Videos 2:09 Kari's forecast: Hotter inland, hazy 3:56 Bay Area's autumn heat wave continues with widespread 90s, 100s 2:49 Jeff's Forecast: Heat wave to bring temps as high as 107 3:21 October heat wave in the Bay Area 5:15 Historic October heat in the Bay Area