weather forecast September 13, 2020 6:35 pm NBC10 First Alert Weather: Mostly Sunny Week Ahead We’re in for mostly sunny conditions this week and comfortable temperatures. NBC10 First Alert Weather meteorologist Krystal Klei has the forecast. US & World Videos 2:45 How much snow fell in the Philly region and surrounding suburbs? 2:53 Dangerously cold temperatures to grip the region this week 3:43 Icy road conditions, dangerous cold after snow moves out 4:46 Fans celebrate in the snow as the Eagles advance to the NFC Championship Game 3:55 Snow falls across the Philly region, Pa. suburbs, NJ and Delaware