Philadelphia February 27, 2017 5:12 am NBC10 First Alert Weather: Roller Coaster Weather Although it is cold to start Monday, NBC10 First Alert Weather meteorologist Bill Henley predicts another drastic warm-up. US & World Videos 3:08 One more warm day before temperatures drop over the weekend 2:40 How long will this summer-like warmth last? 2:14 The summer preview continues 2:16 Clearing out, warming into the 80s 2:35 Warm trend continues, but rain is on the way