Hottest and Coldest Temperatures Ever in Pittsburgh on December 18

On December 18th, Pittsburgh experienced differing weather extremes over the years. The hottest temperature ever recorded on this date was 63.0°F in 1967, while the coldest temperature plummeted to -7.1°F in 1989. On average, the temperature on this day is around 29.91°F, with an average high temperature of 37.73°F and an average low temperature of 22.09°F. In 1989, a fascinating news item emerged as the coldest temperature ever was recorded. The local community rallied together to support each other during this extreme cold spell, providing assistance to those in need, and fostering a strong sense of camaraderie amidst the chilly conditions.