Hottest and Coldest Temperatures Ever in Philadelphia on March 20

On March 20th in Philadelphia, temperatures have historically ranged from a frigid 16.0°F in 1965 to a scorching 79.0°F in 2020. The average temperature for this date hovers around 42.98°F, with highs averaging at 48.44°F, and lows at 37.52°F. In the years 1965 and 2020, Philadelphia experienced extreme weather conditions, from bone-chilling cold to unexpected heatwaves. Notably, in 1965, NASA successfully conducted its first spacewalk as astronaut Alexey Leonov took a historic stroll outside his space capsule on March 18th, an achievement that forever changed the course of space exploration.