1901-2000 Degrees Fahrenheit 1 43.1 46.0 -2.9 14 116 1943 2010 1898 1897 bottom-third 1936,1966 2 41.8 40.7 1.1 77 53 1916 1945,2012 1897 1898 normal 3 37.1 35.9 1.2 81 49 1916 2012 1897 1898 normal 1984,2005 4 34.2 33.3 0.9 78 52 1904 2012 1897 1898 normal 5 33.4 32.5 0.9 76 53 1904 2012 1897 1898 normal 1903 6 34.2 33.8 0.4 67 62 1904 2012 1897 1898 normal 7 36.6 36.2 0.4 63 66 1904,1918 2012 1897 1898 normal 1909,1989 8 39.6 39.4 0.2 60 69 1918 2012 1897 1898 normal 1910,1931,1975,1989 9 42.6 42.6 0.0 53 76 1904 2012 1897 1898 normal 1910,1928,1966,1981,1988 10 45.4 45.4 0.0 53 76 1904 2012 1897 1898 normal 1901,1915,1925,1931 11 46.8 47.3 -0.5 35 94 1904 2012 1897 1898 bottom-third 1902,1928,1944,1979 12 47.6 48.1 -0.5 38 91 1904 2012 1897 1897 bottom-third 1897,1924,1979 18 42.9 43.3 -0.4 42 86 1905 2017 1897 1898 bottom-third 1901,1913,1925,1948,2015 24 47.6 48.0 -0.4 31 97 1905 2017 1897 1898 bottom-third 1909,1915,1921,1925,1936,1969,1970,1971 36 47.4 48.0 -0.6 21 106 1906 2023 1898 1898 bottom-third 1899,1900,1913,1924,1963,1970 48 -99 48.0 -99 -99 -99 1907 2023 normal 60 -99 48.0 -99 -99 -99 1908 2023 normal