1901-2000 Degrees Fahrenheit 1 83.53 85.14 -1.61 12 117 1927 2011 1927 1949 bottom-tenth 2 83.58 85.91 -2.33 4 125 1992 1936 1915 1949 bottom-tenth 3 82.77 84.39 -1.62 11 118 1915 1936 1927 1949 bottom-tenth 4 80.15 81.53 -1.38 11 118 1915 1934 1927 1949 bottom-tenth 5 76.35 77.92 -1.57 7 122 1907 1934 1920 1949 bottom-tenth 6 72.05 73.77 -1.72 8 121 1912 2012 1920 1949 bottom-tenth 7 68.48 69.63 -1.15 19 110 1912 2012 1923 1949 bottom-third 8 65.09 65.99 -0.90 21 108 1912 2012 1929 1949 bottom-third 9 62.76 63.42 -0.66 24 104 1979 2012 1929 1949 bottom-third 10 62.33 62.35 -0.02 53 75 1912 2012 1949 1947 normal 1947 11 62.66 62.76 -0.10 47 81 1912 2012 1949 1946 normal 12 63.86 64.01 -0.15 41 87 1912 2012 1948 1949 bottom-third 18 67.36 67.26 0.10 66 62 1899 2012 1949 1947 normal 1944 24 63.88 64.00 -0.12 53 74 1913 2017 1949 1947 normal 1902,1959 36 63.87 63.98 -0.11 47 79 1905 2018 1949 1948 normal 48 63.86 63.97 -0.11 49 76 1915 2018 1930 1949 normal 60 64.04 63.96 0.08 65 59 1907 2020 1949 1949 normal 1949