1901-2000 Degrees Fahrenheit 1 71.4 68.1 3.3 116 13 1992 1921 1986 1983 top-tenth 1901,2006,2010 2 69.3 65.7 3.6 123 6 1915 1921 1986 1933 top-tenth 2020 3 65.5 61.6 3.9 126 3 1924 1921 1986 1921 top-tenth 4 60.8 56.7 4.1 125 4 1907 1921 1986 1955 top-tenth 5 55.6 51.2 4.4 125 4 1926 2012 1986 1921 top-tenth 6 50.6 45.8 4.8 125 4 1917 2012 1986 1921 top-tenth 1998 7 46.6 41.9 4.7 125 4 1912 2012 1986 1921 top-tenth 8 44.1 39.6 4.5 124 4 1904 2012 1986 1921 top-tenth 9 42.8 39.0 3.8 119 9 1904 2012 1986 1921 top-tenth 10 43.2 39.8 3.4 118 10 1904 2012 1986 1921 top-tenth 11 44.6 41.5 3.1 118 10 1904 2012 1986 1932 top-tenth 1932 12 46.2 43.6 2.6 116 12 1904 2012 1986 1932 top-tenth 1991 18 46.7 44.3 2.4 114 14 1918 1999,2012 1986 1932 top-third 24 45.2 43.6 1.6 107 20 1905 2017 1986 1955 top-third 1955,1991,2003,2005 36 45.0 43.5 1.5 103 23 1918 2012 1986 1955 top-third 1989,2011 48 44.6 43.5 1.1 95 30 1907,1918 2013 1986 1956 top-third 1956,2015 60 44.8 43.5 1.3 99 25 1908 2002 1986 1987 top-third