1901-2000 Degrees Fahrenheit 1 70.7 65.7 5.0 123 6 1993 1936 2011 2007 top-tenth 2 65.5 62.0 3.5 119 10 1915 2021 2011 2007 top-tenth 3 60.1 58.1 2.0 110 19 1915 1936 2011 2007 top-third 4 56.3 53.7 2.6 116 13 1907 1988 2011 2007 top-tenth 5 52.9 48.9 4.0 125 4 1899 1910 2011 2007 top-tenth 6 48.3 44.3 4.0 124 5 1899 2016 2011 1988 top-tenth 7 44.9 40.3 4.6 123 6 1899 1934 2011 2006 top-tenth 8 42.6 37.9 4.7 125 3 1899 1992 2011 1992 top-tenth 1934,1987 9 41.2 37.0 4.2 123 5 1899 1934 2011 2000 top-tenth 10 41.7 37.6 4.1 124 4 1899 2016 2011 2000 top-tenth 11 43.2 39.1 4.1 126 2 1899 2016 2011 2012 top-tenth 12 45.2 41.1 4.1 126 2 1899,1917 2016 2011 2012 top-tenth 18 44.1 42.2 1.9 110 18 1899 2016 2011 2007 top-third 1964 24 42.7 41.1 1.6 104 23 1917 2016 2011 2008 top-third 1989,1991,2003 36 42.2 41.1 1.1 97 29 1899,1952 2017 2011 2009 top-third 1991 48 42.1 41.1 1.0 95 30 1952 2007,2017,2018 2011 2010 top-third 1935,1994,2010 60 42.0 41.1 0.9 89 35 1952 2016 2011 2010 top-third 1943,1999