Hottest and Coldest Temperatures Ever in Allentown on February 15

On February 15, Allentown experienced a range of temperatures, with the hottest ever recorded at 69.1°F in 1954 and the coldest at 1.0°F in 1987. The average temperature for this date is 31.71°F, with an average high of 38.73°F and an average low of 24.69°F. In 1954, when temperatures reached the highest recorded, an interesting milestone occurred: the first mass vaccination of children against polio began in the US. This marked a significant step forward in combating the disease that had previously caused widespread fear and devastation.