Philadelphia October 14, 2019 12:16 pm First Alert Weather: Plenty of Sunshine Highs on Monday should get in the 70s under sunny skies. NBC10 First Alert Weather meteorologist Krystal Klei tells you when you will need the umbrella this week. 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 3:04 Another hot day with chance for isolated morning showers