1901-2000 Degrees Fahrenheit 1 75.2 70.7 4.5 125 4 1907 2010 2007 1943 top-tenth 2 68.1 66.5 1.6 99 30 1907 2010 2006 2007 top-third 1998 3 63.8 61.6 2.2 113 16 1907 2010 2007 2006 top-third 1994,1998,2006 4 59.3 56.9 2.4 116 13 1907 2010 2007 2004 top-tenth 1998 5 55.3 52.4 2.9 115 14 1907 2012 2007 2004 top-third 6 52.2 49.2 3.0 117 12 1940 2012 2007 2006 top-tenth 1949 7 50.3 47.4 2.9 118 10 1904 2012 2007 2002 top-tenth 2000 8 49.8 47.2 2.6 113 15 1904 2012 2007 2006 top-third 9 51.4 48.2 3.2 120 8 1904 2012 2007 2002 top-tenth 2020 10 53.3 50.1 3.2 120 8 1918 2012 2007 2002 top-tenth 11 55.4 52.3 3.1 120 8 1904 2012 2007 2006 top-tenth 2006,2021 12 57.1 54.2 2.9 118 10 1904 2012 2007 2006 top-tenth 18 54.9 52.5 2.4 113 15 1905 2012 2006 2007 top-third 24 56.7 54.2 2.5 117 10 1905 2017 2006 2007 top-tenth 36 56.9 54.2 2.7 117 9 1906 2018,2019,2021 2007 2008 top-tenth 48 56.4 54.2 2.2 114 11 1907 2019,2020 2007 2008 top-tenth 60 56.4 54.2 2.2 113 11 1908 2020,2021 2007 2008 top-tenth 2018