Hottest and Coldest Temperatures Ever in Allentown on June 26

On June 26 in Allentown, the weather has seen extremes over the years. In 1952, a scorching temperature of 99.0°F was recorded, making it the hottest day on record. Conversely, in 1965, the mercury dropped to a chilling 48.9°F, marking the coldest recorded temperature for this date. On average, the temperature hovers around 72.86°F, with a high of 77.02°F and a low of 68.70°F. In other news, during the year of the highest recorded temperature, 1952, the polio vaccine was announced by Dr. Jonas Salk, bringing hope and relief to millions worldwide.