weather forecast June 15, 2020 5:47 pm NBC10 First Alert Weather: How Long Will the Lovely Weather Last? It was another gorgeous day on Monday. WIll the lovely weather last through the week? NBC10 First Alert Weather meteorologist Krystal Klei has the forecast. US & World Videos 2:16 Clearing out, warming into the 80s 2:35 Warm trend continues, but rain is on the way 2:47 The string of warm days continues 2:32 Warm spring days feeling more like summer 2:43 Philly is warmer than Miami, Florida, Monday