bay area weather 16 hours ago October heat wave in the Bay Area An excessive heat warning is in effect through Wednesday night in much of the greater Bay Area because of temperatures that could reach 110 degrees in some inland locations. Jeff Ranieri and Pete Suratos report. US & World Videos 2:45 Forecast: Hotter inland, hazy 5:00 Bay Area's autumn heat wave continues with widespread 90s, 100s 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