1901-2000 Degrees Fahrenheit 1 32.85 29.99 2.86 108 22 1965 2012 1972 1973 top-third 2 27.78 26.41 1.37 92 38 1899 2012 1972 1973 top-third 3 25.62 24.19 1.43 93 37 1912 2012 1972 1973 top-third 4 25.13 23.80 1.33 92 37 1899 2016 1973 1953 top-third 5 26.67 25.18 1.49 102 27 1899 2016 1973 1953 top-third 6 29.44 27.89 1.55 105 24 1899 2016 1973 1938 top-third 7 32.73 31.32 1.41 106 23 1917 2016 1973 1935 top-third 1935 8 36.07 34.79 1.28 102 27 1917 2016 1973 1938 top-third 9 38.76 37.65 1.11 98 31 1917 2017 1973 1938 top-third 10 40.49 39.45 1.04 98 31 1917 2016 1973 1938 top-third 11 41.02 40.17 0.85 96 33 1917 2016 1973 1938 top-third 1921 12 40.72 40.04 0.68 93 36 1917 2016 1973 1942 top-third 18 36.55 35.98 0.57 87 41 1918 2017 1973 1954 top-third 24 40.39 40.03 0.36 81 47 1918 2017 1973 1954 normal 36 40.28 40.02 0.26 74 53 1918 2018 1973 1955 normal 1932 48 40.14 40.01 0.13 70 56 1918 2019 1973 1956 normal 1922,1924 60 40.09 40.00 0.09 66 59 1920 2020 1973 1961 normal 1982