1901-2000 Degrees Fahrenheit 1 76.53 77.81 -1.28 24 105 1965 1998 1913 1914 bottom-third 2 79.72 81.48 -1.76 8 121 1965 1998 1912 1914 bottom-tenth 3 80.90 83.21 -2.31 4 125 1912 1936 1912 1914 bottom-tenth 4 80.35 82.74 -2.39 1 128 1915 1936 1915 1914 lowest 5 78.23 80.78 -2.55 1 128 1915 1936 1915 1914 lowest 6 76.37 77.90 -1.53 8 121 1907 2012 1912 1914 bottom-tenth 7 72.23 74.35 -2.12 3 126 1912 2012 1912 1914 bottom-tenth 8 68.90 70.66 -1.76 6 123 1912 2012 1912 1914 bottom-tenth 9 65.52 67.30 -1.78 5 124 1912 2012 1912 1914 bottom-tenth 10 62.53 64.86 -2.33 2 126 1912 2012 1912 1914 bottom-tenth 11 61.93 63.75 -1.82 4 124 1912 2012 1912 1914 bottom-tenth 12 62.35 64.01 -1.66 6 122 1912 2012 1912 1914 bottom-tenth 18 67.60 68.64 -1.04 10 118 1912 2012 1912 1914 bottom-tenth 24 63.17 64.00 -0.83 14 113 1913 2017 1913 1914 bottom-third 36 63.32 63.98 -0.66 13 113 1917 2018 1914 1912 bottom-tenth 1973 48 62.80 63.97 -1.17 1 124 1915 2018 1915 1914 lowest 60 63.18 63.96 -0.78 4 120 1907 2016 1907 1914 bottom-tenth