Hottest and Coldest Temperatures Ever in Allentown on June 25

On June 25th in Allentown, the historical weather records reveal a wide range of temperatures. The highest temperature on this date was 97.0°F in 1952, while the coldest temperature was 46.0°F in 1979. On average, the temperature reaches 73.16°F, with a high of 77.12°F and a low of 69.20°F. As for an interesting news item, in 1952, the same year the record high was set, the first successful surgical separation of Siamese twins took place in Mount Sinai Hospital, New York City, a significant medical milestone in history.