May 14, 2011 12:26 am EarthWatch Forecast: Friday the 13th – Evening Outlook Could rain wash out the weekend? US & World Videos 2:43 Philly is warmer than Miami, Florida, Monday 2:06 Feeling like summer 2:36 A summer preview 2:50 One more cool day, then warmer weather ahead 3:15 Cold night, then a big warmup this weekend