Hottest and Coldest Temperatures Ever in Allentown on December 18

On December 18th, Allentown experienced a range of temperatures, with the hottest ever recorded at 62.1°F in 2006 and the coldest at 8.1°F in 1980. The average temperature for this date is 32.67°F, with an average high of 39.30°F and an average low of 26.04°F. Interestingly, in 1980, the same year the coldest temperature was recorded, a groundbreaking study on climate change was published, raising awareness about the long-term impacts of rising global temperatures and influencing future climate policies.