Delaware, Average Temperature Rankings, April 2008 1901-2000 Degrees Fahrenheit 1 55.4 52.0 3.4 113 17 1907 2017 2007 2006 top-third 1941 2 50.6 47.4 3.2 113 17 1940 1921 2007 2002 top-third 2000,2011 3 46.7 43.0 3.7 114 16 1934 2012 2007 2002 top-third 4 44.2 40.6 3.6 117 13 1940 2023 2007 2006 top-tenth 5 43.2 39.7 3.5 118 11 1904 2012 2007 2002 top-tenth 1913,1949 6 43.8 40.7 3.1 113 16 1904 2012 2007 2006 top-third 2019 7 46.7 43.0 3.7 121 8 1904 2012 2007 2002 top-tenth 1921 8 49.6 46.0 3.6 121 8 1918 2012 2007 2006 top-tenth 2006,2019 9 52.6 49.1 3.5 120 9 1918 2017 2007 2006 top-tenth 10 54.9 51.8 3.1 119 10 1918 2012,2017 2007 2006 top-tenth 1932 11 56.6 53.5 3.1 119 10 1904 2012 2007 2006 top-tenth 12 57.2 54.2 3.0 120 9 1918 2012 2007 2002 top-tenth 18 52.6 49.7 2.9 119 9 1905 2017 2007 2008 top-tenth 24 56.7 54.2 2.5 118 10 1905 2017 2007 2008 top-tenth 36 56.8 54.2 2.6 116 11 1906 2021 2007 2008 top-tenth 48 56.5 54.2 2.3 116 10 1905 2019,2020,2022,2023 2007 2008 top-tenth 2009,2017 60 56.3 54.2 2.1 113 12 1908 2020 2007 2008 top-tenth 2009,2010,2015