1901-2000 Degrees Fahrenheit 1 45.01 41.50 3.51 112 18 1965 2012 1937 1921 top-third 2 40.51 37.66 2.85 114 16 1899 2012 1937 1925 top-third 3 37.72 35.15 2.57 114 16 1912 2012 1937 1921 top-third 4 36.46 34.55 1.91 104 25 1899 2012 1937 1934 top-third 1987 5 37.33 35.98 1.35 96 33 1899 2000 1937 1935 top-third 6 40.09 39.01 1.08 94 35 1899 2016 1937 1935 top-third 7 43.75 42.70 1.05 96 33 1899 2016 1937 1935 top-third 8 47.62 46.37 1.25 101 28 1899 2016 1937 1935 top-third 1981 9 50.61 49.40 1.21 103 26 1899 2012 1937 1935 top-third 10 52.43 51.31 1.12 101 28 1899 2017 1937 1935 top-third 11 53.29 52.12 1.17 102 27 1899 2017 1937 1935 top-third 12 53.03 52.03 1.00 100 29 1899 2017 1937 1935 top-third 18 47.75 47.67 0.08 59 69 1913 2017 1937 1935 normal 1957 24 52.57 52.02 0.55 89 39 1918 2017 1937 1935 top-third 36 51.92 52.00 -0.08 51 76 1918 2018 1931 1937 normal 1963 48 52.45 51.99 0.46 83 43 1918 2018 1933 1937 normal 60 52.66 51.98 0.68 94 31 1920 2020 1937 1935 top-third