Hottest and Coldest Temperatures Ever in Philadelphia on July 18

On July 18th in Philadelphia, the weather can vary widely based on historical data. In 2012, it reached a scorching 100.0°F, making it the hottest temperature ever recorded on this date. Conversely, in 1976, the temperature dropped to a chilly 57.0°F, marking the coldest recorded temperature. On average, Philadelphia experiences a pleasant 78.73°F on July 18th, with an average high of 82.71°F and an average low of 74.75°F. As an interesting news item, in 1976, the United States celebrated its bicentennial, marking 200 years since the signing of the Declaration of Independence.