Hottest and Coldest Temperatures Ever in Pittsburgh on December 17
On December 17th in Pittsburgh, the temperature ranged from a scorching 64.0°F in 1984 to a bone-chilling -6.0°F in 1989. The average temperature for this date is 31.53°F, with an average high of 40.05°F and an average low of 23.01°F. Looking back in history, it's interesting to note that in 1989, the year with the coldest temperature recorded, the Berlin Wall fell, symbolizing a significant turning point in the reunification of Germany and the end of the Cold War.