Hottest and Coldest Temperatures Ever in Philadelphia on August 09

On August 9th in Philadelphia, the temperature ranged from a scorching 100.9°F in 2001 to a chilly 54.0°F in 1964. The average temperature for this date stands at 76.65°F, with an average high of 79.97°F and an average low of 73.34°F. Notably, in 2001, Philadelphia experienced a record-breaking heatwave, with the temperature reaching a blistering 100.9°F. Amidst the intense heat, an interesting news item from that year was the construction of the iconic Comcast Center, which would become the tallest building in Philadelphia upon its completion in 2008.