Hottest and Coldest Temperatures Ever in Philadelphia on March 21

On March 21, Philadelphia experienced weather that varied from its historical extremes. The hottest recorded temperature on this date was 75.9°F in 1976, while the coldest temperature dipped to 12.0°F in 1965. The average temperature for this day is typically 43.00°F, with an average high of 48.77°F and an average low of 37.23°F. In 1976, aside from the scorching temperatures, an interesting news item occurred internationally. The United States celebrated its bicentennial, marking 200 years since the signing of the Declaration of Independence—a notable milestone in the nation's history.