1901-2000 Degrees Fahrenheit 1 31.3 34.6 -3.3 24 105 1951 2001 1895 1896 bottom-third 2 40.5 41.0 -0.5 52 77 1925 1963 1896 1897 normal 3 47.4 46.8 0.6 72 57 1917 2016 1896 1897 normal 1902,1921,1985,2012 4 51.2 51.6 -0.4 45 84 1917 2016 1896 1897 normal 1905,1912,1916,1942,1945,1964 5 55.0 54.9 0.1 59 70 1917 2016 1896 1897 normal 1901,1919,1935,1982 6 55.8 56.3 -0.5 39 90 1917 2016 1896 1897 bottom-third 1935,1936,1957,1981,1997 7 55.0 55.9 -0.9 24 105 1917 2016 1896 1896 bottom-third 1895,1896,1993 8 53.1 54.2 -1.1 20 109 1917 1998,2010,2016 1897 1896 bottom-third 1905,1915,1927,1940 9 50.1 51.4 -1.3 17 112 1917 2010 1897 1896 bottom-third 1915,1951,1965 10 47.2 48.1 -0.9 26 103 1917 2012 1895 1896 bottom-third 1974,1978 11 44.5 45.4 -0.9 28 101 1917 2012 1895 1896 bottom-third 1951 12 42.8 43.6 -0.8 31 97 1917 2012 1897 1896 bottom-third 1903,1935 18 46.6 47.8 -1.2 12 116 1904 2012 1897 1896 bottom-tenth 1927,1936,1951 24 42.9 43.6 -0.7 25 102 1918 1999,2017 1897 1897 bottom-third 1900,1972,1978 36 -99 43.5 -99 -99 -99 1918 2000,2012 normal 48 -99 43.5 -99 -99 -99 1907,1918 2001 normal 60 -99 43.5 -99 -99 -99 1907 2002 normal