Hottest and Coldest Temperatures Ever in Philadelphia on September 18

On September 18th, Philadelphia experienced a range of temperatures throughout history. The hottest recorded temperature reached 89.1°F in 1965, while the coldest recorded temperature dropped to 42.1°F in 1959. On average, the temperature for this date stands at 67.50°F, with a typical high of 71.85°F and a low of 63.16°F. Looking back to 1965, an interesting news item occurred: The Beatles performed at Philadelphia's JFK Stadium as part of their legendary North American tour, captivating fans with their revolutionary sound.