Hottest and Coldest Temperatures Ever in Allentown on September 24

On September 24th in Allentown, the weather has historically varied between extremes. The hottest temperature ever recorded in the city was a scorching 91.9°F in 1970, while the coldest temperature dipped down to 30.9°F in 1963. The average temperature on this date is a comfortable 61.72°F, with an average high of 67.81°F and an average low of 55.64°F. In the 1960s, during the cold spell when Allentown experienced its coldest temperature, NASA successfully launched and piloted the first manned mission to orbit the Earth, part of the historic Mercury-Atlas program.