Hottest and Coldest Temperatures Ever in Philadelphia on September 19
On September 19 in Philadelphia, the weather varied with a range of extremes. The highest temperature ever recorded on this date was 91.9°F, which occurred in 1983, while the coldest temperature was 43.0°F back in 1959. The average temperature for September 19 is 66.82°F, with an average high of 71.12°F and an average low of 62.52°F. It's interesting to note that in 1983, the year with the hottest temperature recorded, Vanessa Williams became the first African American to win the Miss America title, breaking barriers in the pageant world.