Hottest and Coldest Temperatures Ever in Philadelphia on June 20

On June 20th, Philadelphia experienced varying temperatures throughout history. The hottest temperature ever recorded reached 97.0°F in 2012, while the coldest temperature dipped to 51.1°F in 1956. The average temperature for this date stands at 73.35°F, with an average high of 77.82°F and an average low of 68.89°F. In 1956, during the record-setting cold, an interesting news item emerged: the world's first hard disk drive, the IBM 350, was introduced, revolutionizing data storage and paving the way for future technological advancements.