August 31, 2011 4:38 pm San Diego's Weather Forecast for Aug 31 San Diego’s Weather Forecast for Aug 31 US & World Videos 2:53 Shark scientists using new DNA technology to track white sharks in San Diego's waters 2:10 Thousands run in San Diego's annual Rock ‘n' Roll Marathon 0:26 Crews battling fire across US-Mexico border near Otay Mountain 2:43 Large voter turnout at San Diego Mexican Consulate in Little Italy for presidential election 2:26 Shark attacks swimmer in Del Mar, beaches closed