1901-2000 Degrees Fahrenheit 1 11.0 9.8 1.2 81 49 1936 1998 1897 1896 normal 2 11.3 7.0 4.3 96 34 1936 1987 1897 1898 top-third 3 9.9 8.3 1.6 78 51 1936 1998 1897 1898 normal 4 12.3 12.7 -0.4 58 71 1936 2002 1897 1898 normal 5 18.8 18.8 0.0 67 62 1936 2012 1897 1898 normal 1905,1968 6 26.1 24.9 1.2 77 52 1936 2016 1897 1898 normal 1926 7 31.2 30.7 0.5 68 61 1936 2012,2016 1897 1898 normal 1902 8 35.9 35.4 0.5 70 59 1936 2012 1897 1898 normal 1914 9 38.6 38.4 0.2 63 66 1936 2012,2016 1897 1898 normal 1901,1906 10 40.2 39.9 0.3 72 57 1936 2002 1897 1898 normal 1914,1926,1939,1963,2010 11 40.2 39.9 0.3 71 58 1936 2002,2016 1897 1898 normal 2003 12 37.8 38.5 -0.7 37 92 1936 2016 1897 1896 bottom-third 1896,1937,1956,1959,1967,2009 18 31.9 34.0 -2.1 16 112 1918 2017 1897 1898 bottom-third 24 36.6 38.5 -1.9 9 119 1918 2017 1897 1897 bottom-tenth 1897,1951 36 37.0 38.5 -1.5 11 116 1918 2018 1898 1898 bottom-tenth 1920,1929,1951 48 -99 38.4 -99 -99 -99 1900,1918,1920 2002 normal 60 -99 38.4 -99 -99 -99 1920 2002 normal