1901-2000 Degrees Fahrenheit 1 53.9 42.6 11.3 128 2 1940 1950 1936 1937 top-tenth 2 50.5 43.4 7.1 127 2 1977 1950 1936 1937 top-tenth 3 49.9 46.1 3.8 118 11 1977 1932 1936 1934 top-tenth 2002 4 53.5 50.2 3.3 118 11 1977 1932 1936 1932 top-tenth 2005 5 58.3 54.9 3.4 123 6 1977 1932 1936 1934 top-tenth 1934 6 61.9 58.9 3.0 124 5 1977 2017 1936 1932 top-tenth 7 64.6 61.9 2.7 124 5 1977 2017 1936 1932 top-tenth 1923 8 66.6 63.8 2.8 124 5 1977 2017 1936 1932 top-tenth 9 67.2 64.4 2.8 125 4 1977 2017 1936 1932 top-tenth 10 66.3 64.1 2.2 123 6 1977 2017 1936 1932 top-tenth 2016 11 65.4 63.1 2.3 126 3 1977 2017 1936 1923 top-tenth 1923,1999 12 63.4 61.6 1.8 118 11 1977 2017 1936 1928 top-tenth 1898 18 61.6 60.7 0.9 103 25 1977 2017 1936 1934 top-third 1917,1920,1934,1949,2006,2009,2012 24 62.5 61.6 0.9 105 23 1977 1923 1936 1934 top-third 1926,1933,1934,1999 36 62.2 61.6 0.6 95 32 1970 2019,2021 1936 1934 top-third 1914,1921,1933,1954,2002,2006 48 62.4 61.6 0.8 108 18 1970,1979,1980 2020 1936 1935 top-third 1910,1934,1935,2013 60 62.3 61.6 0.7 106 19 1981 2020,2021 1936 1934 top-third 1912,1913,1934,1939,1950,2002,2013,2018