Hottest and Coldest Temperatures Ever in Philadelphia on April 03

On April 3rd, the historical weather data for Philadelphia reveals that the city experienced a range of temperatures. The highest recorded temperature on this date was 87.1°F in 1963, while the coldest temperature occurred in 1954, plummeting down to 28.0°F. The average temperature is typically around 49.38°F, with an average high of 55.23°F and an average low of 43.52°F. In the midst of these weather fluctuations, an interesting news item from 1963 is that the U.S. Postal Service introduced the ZIP code system, simplifying and improving mail delivery nationwide.