Hottest and Coldest Temperatures Ever in Pittsburgh on December 31

On December 31st in Pittsburgh, the weather typically exhibits an average temperature of 31.64°F. However, historical records indicate that the highest temperature ever recorded on this date was a relatively warm 66.9°F in 1972, while the coldest temperature was a bone-chilling -0.9°F in 1976. The average high temperature reaches 40.52°F, whereas the average low temperature drops to 22.77°F. Adding an interesting tidbit from the provided years, 1972 saw the signing of the landmark Clean Water Act in the United States, aimed at preserving and restoring the quality of the nation's water resources.