weather forecast June 21, 2020 6:20 pm NBC10 First Alert Weather: Hot, Muggy and Stormy Week Ahead We’re in for hot, muggy and stormy conditions this week. NBC10 First Alert Weather meteorologist Steve Sosna has the forecast. 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