Hottest and Coldest Temperatures Ever in Allentown on September 15

On September 15th in Allentown, the hottest temperature on record was 88.0°F in 1993, while the coldest temperature recorded was 37.9°F in 1975. On average, this date sees a temperature of 65.93°F, with a high of 71.56°F and a low of 60.30°F. In an interesting news item from 1993, it was reported that the Allentown community came together to set up cooling centers and distribute free water during a heatwave, ensuring the well-being of its residents during extreme temperatures.