Delaware, Average Temperature Rankings, October 2019 1901-2000 Degrees Fahrenheit 1 61.5 56.4 5.1 120 9 1907 2007 2018 2017 top-tenth 2 66.6 61.9 4.7 125 4 1917 2007 2017 2018 top-tenth 3 69.8 65.8 4.0 123 6 1909,1917 2018 2017 2018 top-tenth 4 72.3 68.3 4.0 126 3 1909 2016 2017 2018 top-tenth 5 72.6 68.7 3.9 127 2 1907 2010 2018 2016 top-tenth 2016 6 71.7 67.7 4.0 126 3 1907 2010,2018 2017 2018 top-tenth 7 69.8 65.4 4.4 128 1 1907 2019 2018 2019 highest 8 66.5 62.6 3.9 126 3 1907 2010 2018 2012 top-tenth 9 63.4 59.4 4.0 127 2 1907 2012 2018 2012 top-tenth 10 60.6 56.8 3.8 126 3 1940 2012 2018 2017 top-tenth 11 58.8 55.0 3.8 124 4 1904 2012 2018 2017 top-tenth 2017 12 57.8 54.2 3.6 123 5 1904 2012 2018 2017 top-tenth 18 62.4 58.7 3.7 125 3 1904 2012 2018 2016 top-tenth 24 57.3 54.2 3.1 120 7 1905 2017 2016 2018 top-tenth 36 57.5 54.2 3.3 123 3 1905 2018 2017 2018 top-tenth 2012 48 57.8 54.2 3.6 124 1 1907 2019 2018 2019 highest 60 57.2 54.2 3.0 121 3 1905,1907,1908 2020 2018 2019 top-tenth 2022