weather forecast September 20, 2024 11:45 pm Warmer Saturday before temperatures drop for the start to fall Our weekend will start off warmer and dry before fall brings us cooler temperatures. NBC10 First Alert Weather meteorologist Brittney Shipp has your forecast. US & World Videos 2:55 Fall-like conditions on the way as the season kicks off Sunday 3:07 Temperatures take a little tumble as we kick off fall this weekend 3:17 Fall cool down coming right on schedule 2:47 Abnormally dry for most of Philadelphia region, fall starts with cooler temperatures 3:03 You are likely gonna like the weekend weather forecast