1901-2000 Degrees Fahrenheit 1 84.76 85.14 -0.38 45 84 1927 2011 1897 1898 normal 2 85.51 85.91 -0.40 39 90 1992 1936 1897 1898 bottom-third 3 84.18 84.39 -0.21 41 88 1915 1936 1897 1898 bottom-third 4 81.20 81.53 -0.33 40 89 1915 1934 1895 1898 bottom-third 1990 5 77.55 77.92 -0.37 39 90 1907 1934 1899 1898 bottom-third 6 72.77 73.77 -1.00 19 110 1912 2012 1899 1898 bottom-third 7 67.57 69.63 -2.06 4 125 1912 2012 1899 1898 bottom-tenth 8 64.11 65.99 -1.88 4 125 1912 2012 1899 1898 bottom-tenth 9 61.31 63.42 -2.11 4 124 1979 2012 1899 1898 bottom-tenth 1917 10 60.13 62.35 -2.22 3 125 1912 2012 1899 1898 bottom-tenth 11 60.43 62.76 -2.33 2 126 1912 2012 1899 1898 bottom-tenth 12 61.95 64.01 -2.06 2 126 1912 2012 1899 1898 bottom-tenth 18 65.84 67.26 -1.42 1 127 1899 2012 1899 1898 lowest 24 63.05 64.00 -0.95 7 120 1913 2017 1899 1898 bottom-tenth 1903 36 62.97 63.98 -1.01 3 123 1905 2018 1899 1898 bottom-tenth 1914 48 63.20 63.97 -0.77 8 117 1915 2018 1899 1899 bottom-tenth 60 -99 63.96 -99 -99 -99 1907 2020 normal