Hottest and Coldest Temperatures Ever in Philadelphia on May 09

On May 9th, in Philadelphia, the temperature varied widely throughout history. The hottest ever recorded was a scorching 91.0°F back in 1963, while the coldest on record was a chilly 35.1°F in 2020. On average, this date tends to have a more moderate climate, with temperatures hovering around 60.31°F. The average high temperature reaches 66.24°F, while the low drops to 54.37°F. In more exciting news, during the year 1963 when the highest temperature occurred, Valentina Tereshkova became the first woman to travel into space, marking a significant milestone in space exploration.