bay area weather 7 hours ago Vianey's forecast: Heat wave persists Meteorologist Vianey Arana tracks dangerous heat in your Microclimate Weather forecast. US & World Videos 3:21 October heat wave in the Bay Area 5:15 Historic October heat in the Bay Area 2:00 Autumn heat wave bakes the Bay Area 2:44 Forecast: Excessive heat and hazy sky 2:37 Kari's forecast: Excessive heat and hazy sky