1901-2000 Degrees Fahrenheit 1 48.09 47.44 0.65 82 47 1917 2018 1954 1956 normal 2 43.69 43.03 0.66 84 45 1907 2012 1956 1955 normal 1914,1978 3 39.31 38.68 0.63 84 45 1917 2012 1956 1946 normal 1941 4 36.39 34.72 1.67 111 18 1917 2012 1956 1938 top-third 5 32.50 31.72 0.78 88 41 1917 2012 1956 1954 top-third 6 31.28 30.21 1.07 95 33 1917 2012 1956 1953 top-third 7 30.86 30.28 0.58 83 45 1917 2012 1956 1954 normal 8 32.37 31.68 0.69 90 38 1917 2016,2017 1956 1954 top-third 1900 9 34.35 33.92 0.43 83 45 1917 2016 1956 1954 normal 1972 10 36.73 36.44 0.29 73 55 1917 2017 1956 1954 normal 11 38.84 38.63 0.21 70 58 1917 2017 1956 1954 normal 12 40.33 40.04 0.29 78 50 1917 2017 1956 1954 normal 1900,1972,1985 18 36.73 36.76 -0.03 54 73 1918 2017 1956 1955 normal 1897 24 39.88 40.03 -0.15 49 78 1918 2017 1956 1955 normal 1976 36 39.98 40.02 -0.04 54 72 1918 2017 1953 1956 normal 1908 48 40.17 40.01 0.16 70 55 1918 2018 1954 1956 normal 1974 60 40.21 40.00 0.21 74 50 1920 2020 1956 1945 normal