1901-2000 Degrees Fahrenheit 1 37.42 38.61 -1.19 27 103 1920 1981 1971 1972 bottom-third 2 35.87 34.30 1.57 103 27 1950 2012 1972 1946 top-third 3 31.62 30.47 1.15 94 36 1899 2012 1972 1961 top-third 4 28.68 27.79 0.89 86 44 1912 2012 1972 1954 normal 5 27.01 26.76 0.25 69 60 1899 2012 1972 1972 normal 1972 6 27.58 27.42 0.16 66 63 1899 2017 1971 1972 normal 7 29.52 29.42 0.10 65 64 1899 2017 1971 1972 normal 8 32.36 32.23 0.13 66 63 1917 2016 1971 1972 normal 9 35.31 35.21 0.10 62 67 1917 2017 1971 1972 normal 10 37.72 37.74 -0.02 60 69 1917 2017 1971 1972 normal 11 39.32 39.37 -0.05 54 75 1917 2017 1971 1972 normal 12 40.01 40.04 -0.03 56 73 1917 2016 1971 1972 normal 1946 18 35.90 35.83 0.07 64 64 1918 2017 1972 1959 normal 24 40.07 40.03 0.04 58 70 1918 2017 1972 1959 normal 1936 36 39.95 40.02 -0.07 48 79 1918 2017 1972 1961 normal 1909,1938 48 39.88 40.01 -0.13 47 79 1918 2019 1972 1961 normal 60 39.75 40.00 -0.25 29 96 1920 2020 1972 1967 bottom-third 1904