Allentown, Pennsylvania, Average Temperature Rankings, October 2017 1991-2020 Degrees Fahrenheit 1 58.6 52.8 5.8 97 3 1925 2007 2016 2007 top-tenth 2 62.5 58.6 3.9 97 3 1940 2007 2016 2007 top-tenth 3 64.9 63.0 1.9 93 7 1940 2021 2015 2016 top-tenth 4 67.2 65.7 1.5 92 8 1940 2021 2015 2016 top-tenth 2022 5 67.6 66.3 1.3 92 8 1940 2021 2015 2016 top-tenth 2011 6 66.1 65.3 0.8 87 13 1927 2018 2014 2016 top-third 1959 7 64.6 63.1 1.5 95 5 1940 2019 2016 2015 top-tenth 2010,2015 8 61.0 60.0 1.0 90 10 1940 2012,2021 2015 2016 top-tenth 9 58.5 56.8 1.7 94 6 1940 2012 2015 2016 top-tenth 2018 10 56.0 53.9 2.1 93 5 1940 2012 2016 2012 top-tenth 1998 11 53.8 52.0 1.8 91 7 1940 2012 2015 2016 top-tenth 12 53.1 51.2 1.9 91 5 1940 2012 2015 2016 top-tenth 2002 18 57.7 55.8 1.9 89 6 1940 2012 2015 2016 top-tenth 24 53.5 51.1 2.4 90 1 1935 2017 2016 2017 highest 36 52.4 51.1 1.3 81 7 1979 2021 2016 2012 top-tenth 48 51.6 51.0 0.6 77 8 1943,1964,1979 2019,2021,2022 2016 2013 top-tenth 60 51.6 50.9 0.7 73 9 1965,1967,1982 2020 2015 2016 top-third 2012