1901-2000 Degrees Fahrenheit 1 46.74 47.44 -0.70 30 99 1917 2018 1917 1922 bottom-third 2 42.26 43.03 -0.77 24 105 1907 2012 1920 1922 bottom-third 1995 3 36.87 38.68 -1.81 5 124 1917 2012 1917 1922 bottom-tenth 4 32.25 34.72 -2.47 3 126 1917 2012 1917 1922 bottom-tenth 5 30.62 31.72 -1.10 19 110 1917 2012 1918 1922 bottom-third 6 29.43 30.21 -0.78 26 102 1917 2012 1920 1922 bottom-third 7 29.75 30.28 -0.53 31 97 1917 2012 1920 1922 bottom-third 8 31.20 31.68 -0.48 30 98 1917 2016,2017 1920 1922 bottom-third 1906 9 33.62 33.92 -0.30 37 91 1917 2016 1920 1922 bottom-third 1906,1916 10 36.22 36.44 -0.22 43 85 1917 2017 1920 1922 normal 11 38.37 38.63 -0.26 43 85 1917 2017 1920 1922 normal 12 39.92 40.04 -0.12 49 79 1917 2017 1920 1922 normal 1959,1967 18 36.55 36.76 -0.21 43 84 1918 2017 1920 1922 normal 1948 24 40.10 40.03 0.07 61 66 1918 2017 1921 1922 normal 1946 36 40.35 40.02 0.33 74 52 1918 2017 1922 1923 normal 48 40.09 40.01 0.08 65 60 1918 2018 1921 1922 normal 1903 60 40.14 40.00 0.14 70 54 1920 2020 1922 1923 normal