Hottest and Coldest Temperatures Ever in Allentown on July 18

On July 18, Allentown experienced varying weather conditions over the years. The city's hottest temperature on this date, recorded in 1953, reached a scorching 98.1°F, while the coldest temperature, documented in 1956, dipped to a chilly 53.1°F. On average, Allentown observes a temperature of 76.55°F on this day, with the average high temperature being 81.42°F and the average low temperature resting at 71.68°F. In light of the historical data, it's interesting to note that during the same year as the record-breaking high temperature, in 1953, the Polio vaccine was announced as a major breakthrough in medical science, significantly reducing the threat of the disease.