1901-2000 Degrees Fahrenheit 1 67.10 68.49 -1.39 16 113 1907 2021 1982 1981 bottom-third 2 62.52 64.35 -1.83 6 123 1907 2018 1945 1982 bottom-tenth 3 57.35 59.91 -2.56 3 126 1907 1934 1917 1982 bottom-tenth 4 53.61 55.31 -1.70 6 123 1917 2012 1975 1982 bottom-tenth 5 50.26 51.01 -0.75 30 99 1917 2012 1982 1981 bottom-third 1964 6 47.41 47.53 -0.12 51 78 1917 2012 1982 1981 normal 1973 7 45.75 45.42 0.33 76 52 1917 2012 1982 1981 normal 8 45.17 44.96 0.21 72 56 1917 2012 1982 1981 normal 1996 9 46.07 45.98 0.09 64 64 1917 2012 1982 1981 normal 1940 10 47.87 47.86 0.01 56 72 1917 2016 1982 1981 normal 1901,1919 11 50.07 50.07 0.00 55 73 1917 2012 1982 1981 normal 12 52.00 52.03 -0.03 55 73 1917 2012 1982 1981 normal 18 50.03 50.52 -0.49 24 104 1917 2017 1980 1982 bottom-third 24 51.76 52.02 -0.26 34 93 1913 2017 1980 1982 bottom-third 1915 36 52.30 52.00 0.30 77 49 1917 2018 1981 1982 normal 48 52.25 51.99 0.26 74 51 1918 2018 1982 1957 normal 60 51.91 51.98 -0.07 51 73 1920 2020 1982 1976 normal 1926,1953