Hottest and Coldest Temperatures Ever in Allentown on October 31

On October 31 in Allentown, the weather has seen extremes over the years. The hottest temperature on record for this day was a scorching 81.0°F back in 1950, while the coldest temperature recorded was a chilly 21.0°F in 1988. The average temperature for October 31 is 49.44°F, with a typical high of 55.30°F and a low of 43.58°F. In 1950, coincidentally the year of the highest recorded temperature, Allentown celebrated the opening of its first shopping mall, the Lehigh Valley Mall, adding a new dimension to the city's ever-growing retail scene.