1901-2000 Degrees Fahrenheit 1 42.39 41.41 0.98 92 37 1917 1947 1899 1900 top-third 2 46.59 46.66 -0.07 53 76 1917 2015 1899 1900 normal 1945 3 51.14 50.79 0.35 73 56 1917 2016 1899 1900 normal 4 53.99 53.23 0.76 96 33 1976 2021 1899 1900 top-third 5 54.28 53.71 0.57 86 43 1917 2021 1899 1900 top-third 1940,1954 6 53.27 52.66 0.61 89 40 1917 2018 1899 1900 top-third 7 50.96 50.65 0.31 74 55 1917 2015 1899 1900 normal 1949 8 48.21 48.07 0.14 61 68 1917 2016 1899 1900 normal 9 45.02 45.27 -0.25 43 86 1917 2016 1899 1900 bottom-third 10 42.63 42.71 -0.08 57 72 1917 2016 1899 1900 normal 11 40.96 40.89 0.07 63 65 1917 2016 1899 1900 normal 12 40.12 40.04 0.08 65 63 1917 2016 1899 1900 normal 18 44.73 44.25 0.48 86 42 1917 2016 1899 1900 top-third 24 40.56 40.04 0.52 84 43 1917,1918 2017 1900 1901 normal 1941 36 39.79 40.02 -0.23 38 88 1918 2017 1900 1898 bottom-third 1949 48 39.83 40.01 -0.18 40 85 1918 2018 1900 1901 bottom-third 1931 60 39.85 40.00 -0.15 41 83 1920 2020 1900 1901 bottom-third 1927,1929