1901-2000 Degrees Fahrenheit 1 55.3 52.9 2.4 92 38 1895 2018 1896 1897 top-third 2 50.9 51.6 -0.7 59 71 1978 1950 1896 1897 normal 1996 3 50.4 51.4 -1.0 46 83 1978 1932 1896 1897 normal 1988 4 53.2 53.0 0.2 67 62 1977 1932 1896 1897 normal 1928,1959 5 55.9 55.9 0.0 64 65 1977 1932 1896 1897 normal 6 59.8 59.4 0.4 76 53 1977 1932 1896 1897 normal 1942,1990 7 63.1 62.5 0.6 85 44 1977 1932 1896 1897 normal 1928,1933,2002,2013 8 65.5 64.8 0.7 89 40 1977 1932 1896 1897 top-third 1909,1913,1935,1986,2002 9 67.1 66.5 0.6 88 41 1977 1932 1896 1897 top-third 1909,1928,1986,2000 10 68.3 67.2 1.1 106 23 1977 1932 1896 1897 top-third 1903,1907,2005 11 68.5 67.1 1.4 114 15 1977 1932,2017 1896 1897 top-third 1920 12 67.5 66.5 1.0 101 28 1977 2017 1896 1897 top-third 18 64.3 64.1 0.2 69 59 1978 2017 1897 1897 normal 1907,1909,1912,1936,1945,1988,1996 24 66.5 66.5 0.0 52 76 1978 2017 1897 1897 normal 1912,1916,1930,1952,1983,1993,1996 36 -99 66.5 -99 -99 -99 1978 2018 normal 48 -99 66.5 -99 -99 -99 1970,1979,1980 2019,2020 normal 60 -99 66.5 -99 -99 -99 1970,1980,1981 2020 normal