Hottest and Coldest Temperatures Ever in Philadelphia on December 16

On December 16 in Philadelphia, the weather varies between a scorching 68.0°F in 1971 to a bone-chilling 12.0°F in 1951. The average temperature for this date stands at 36.87°F, with an average high of 43.83°F and an average low of 29.91°F. In the year 1951, apart from experiencing the coldest temperature ever recorded, it was also a notable year for science fiction fans as Isaac Asimov's iconic novel "Foundation" was published, paving the way for a highly influential series in the genre.