1991-2020 Degrees Fahrenheit 1 48.2 46.2 2.0 105 24 1969 1963 2004 2003 top-third 2 55.1 52.8 2.3 121 8 1912 2015 2004 1963 top-tenth 3 58.9 57.8 1.1 117 12 1912 2015,2022 2004 2003 top-tenth 1947,2020 4 62.1 60.8 1.3 118 11 1912 2022 2004 2003 top-tenth 5 62.0 61.2 0.8 115 14 1912 2022 2004 2003 top-third 6 60.4 59.7 0.7 113 16 1915 2022 2004 2003 top-third 7 57.9 57.2 0.7 112 17 1917 2022 2004 2003 top-third 8 55.2 54.7 0.5 114 15 1912 2012 2004 2004 top-third 2004 9 52.7 51.9 0.8 121 8 1912 2012 2004 2000 top-tenth 1963 10 50.6 49.6 1.0 121 8 1917 2012 2004 2003 top-tenth 11 48.9 47.6 1.3 121 7 1917 2012 2004 2003 top-tenth 1934 12 47.7 46.6 1.1 117 10 1899,1917 2000 2004 2003 top-tenth 18 51.5 50.9 0.6 113 14 1899,1917 2022 2002 2004 top-third 24 47.4 46.6 0.8 114 11 1913 2022 2003 2004 top-tenth 36 47.6 46.6 1.0 119 4 1917 2017 2004 2005 top-tenth 48 47.3 46.5 0.8 114 7 1915 2018 2004 2003 top-tenth 2003,2015,2020 60 47.0 46.5 0.5 107 12 1916,1917 2018 2002 2004 top-tenth 2008,2015