Hottest and Coldest Temperatures Ever in Philadelphia on September 11

On September 11th in Philadelphia, temperatures typically range from a low of 66.18°F to a high of 74.73°F. However, historical records show that the hottest day on this date occurred in 1983, reaching a scorching 98.1°F, while the coldest day was in 1976, with temperatures dropping to 46.9°F. Despite these extremes, the average temperature for September 11th is a pleasant 70.46°F. In the news of 1983, Time magazine named Bill Gates as "Man of the Year" for his significant contributions to the personal computer revolution, foreshadowing the technological advancements that would shape the future.