Hottest and Coldest Temperatures Ever in Allentown on September 20

On September 20th in Allentown, the temperature has seen significant variations over the years. The highest temperature ever recorded on this date was a scorching 91.9°F in 1983, while the coldest temperature occurred in 2020, dropping to a chilly 36.0°F. The average temperature for September 20th is 64.52°F, with an average high of 69.47°F and an average low of 59.56°F. Looking back to the year 1983, an intriguing news item is that the popular video game "Mario Bros." was released by Nintendo, marking the beginning of a beloved gaming franchise.