1901-2000 Degrees Fahrenheit 1 44.69 42.76 1.93 95 34 1983 2021 1928 1923 top-third 2 46.99 47.74 -0.75 38 91 2000 1999 1927 1928 bottom-third 3 53.47 54.09 -0.62 39 90 1972 1999 1926 1928 bottom-third 4 59.06 60.02 -0.96 26 103 1972 2021 1926 1928 bottom-third 5 64.54 65.04 -0.50 40 89 1972 2021 1927 1928 bottom-third 6 68.27 68.65 -0.38 45 84 1972 2021 1927 1928 normal 1957 7 70.05 70.46 -0.41 44 85 1972 2021 1928 1922 normal 8 70.25 70.77 -0.52 36 93 1972 2021 1927 1928 bottom-third 1902 9 69.45 69.96 -0.51 36 93 1972 2021 1928 1926 bottom-third 1915 10 68.01 68.27 -0.26 52 77 1912 2012 1928 1925 normal 1911 11 65.27 66.14 -0.87 19 110 1912 2012 1924 1928 bottom-third 1915 12 62.92 64.00 -1.08 11 118 1912 2012 1924 1928 bottom-tenth 1924 18 64.76 65.55 -0.79 16 112 1912 2012 1924 1928 bottom-third 24 63.42 64.00 -0.58 26 102 1913 2017 1924 1928 bottom-third 36 63.59 63.98 -0.39 28 99 1905 2017 1924 1928 bottom-third 1908 48 63.66 63.97 -0.31 32 94 1906 2018 1920 1928 bottom-third 1978 60 63.85 63.96 -0.11 47 78 1907 2016 1928 1928 normal 1928,1997