Hottest and Coldest Temperatures Ever in Philadelphia on September 26

On September 26th, Philadelphia experienced a range of temperatures, with the highest ever recorded at 91.9°F in 1970, and the coldest at 37.9°F in 1963. The average temperature for this date is 65.01°F, with an average high of 69.98°F and average low of 60.05°F. In the 1970s when Philadelphia reached its highest temperature, an interesting news item was the introduction of the first-ever floppy disk by IBM, revolutionizing data storage and laying the foundation for future technological advancements.