1901-2000 Degrees Fahrenheit 1 72.0 70.4 1.6 100 29 1895,2009 1955,2020 1990 1988 top-third 1900,1966 2 70.2 68.2 2.0 112 17 1903,1907,1927 1934 1990 1987 top-third 2002,2016 3 68.3 64.7 3.6 128 1 1907 1991 1990 1991 highest 4 63.7 60.2 3.5 127 2 1907 2010 1990 1991 top-tenth 5 58.8 55.3 3.5 125 4 1926 2012 1990 1921 top-tenth 6 54.4 50.5 3.9 126 3 1907,1978 2012 1990 1921 top-tenth 7 50.5 46.9 3.6 125 4 1978 2012 1990 1921 top-tenth 8 48.5 44.7 3.8 125 3 1904 2012 1990 1991 top-tenth 9 47.9 44.1 3.8 124 4 1904 2012 1990 1991 top-tenth 10 48.4 44.8 3.6 126 2 1904 2012 1990 1991 top-tenth 2002 11 49.5 46.3 3.2 124 4 1918 2012 1990 1991 top-tenth 2002 12 51.1 48.1 3.0 123 5 1904 2012 1990 1991 top-tenth 18 51.5 48.9 2.6 123 5 1918 2012 1990 1991 top-tenth 24 49.9 48.1 1.8 115 12 1905 2017 1990 1933 top-tenth 1922,1992,2006 36 49.4 48.1 1.3 108 18 1906,1979 2018 1990 1934 top-third 1934,2001,2004,2010 48 49.1 48.1 1.0 99 26 1907 2019 1990 1955 top-third 1932,1935,1993,1999 60 49.1 48.1 1.0 100 24 1908 2020 1990 1934 top-third 1934,1999