Hottest and Coldest Temperatures Ever in Philadelphia on April 18

On April 18th in Philadelphia, the weather has varied over the years. In 1976, the city experienced its highest temperature ever recorded at 93.9°F, while in 1983, it reached its coldest temperature of 32.0°F. On average, the temperature for this date is 55.35°F, with a high of 62.03°F and a low of 48.67°F. Interestingly, during the record-breaking heatwave in 1976, the Philadelphia Phillies became the first professional sports team in history to use a Fan-O-Meter, which helped keep the spectators cool by displaying the heat index on the scoreboard.