Hottest and Coldest Temperatures Ever in Philadelphia on June 18

On June 18th, Philadelphia experienced varying temperatures. The highest temperature ever recorded on this day was 96.1°F in 1957, while the coldest temperature dated back to 1950, reaching 48.0°F. The average temperature typically settled at 71.87°F, with an average high of 76.71°F and an average low of 67.02°F. Amidst these temperature fluctuations, an intriguing fact from the shared years is that in 1957, the first portable computer was introduced by the IBM company, marking a significant milestone in the advancement of technology.