1901-2000 Degrees Fahrenheit 1 60.9 58.9 2.0 99 30 1918 1961 1895 1895 top-third 1983,2010 2 63.4 62.5 0.9 82 47 1963 2018 1895 1895 normal 1930,1933,1968 3 63.8 64.4 -0.6 35 94 1963 2018 1895 1895 bottom-third 1978,1981,2009 4 64.7 64.2 0.5 77 52 1903 2005 1895 1895 normal 1899,1953,1970,1971,1987,1994 5 63.2 62.2 1.0 94 35 1924 2018 1895 1895 top-third 1930,1941,1973,1975,1995,2006 6 59.8 59.0 0.8 85 44 1924 2010 1895 1895 normal 1937,1988 7 54.8 54.9 -0.1 44 85 1926 2012 1895 1895 normal 1902,1937 8 49.7 50.7 -1.0 23 106 1926 2012 1895 1895 bottom-third 1965 9 46.1 47.2 -1.1 20 109 1912 2012 1895 1895 bottom-third 1971 10 -99 45.0 -99 -99 -99 1904 2012 normal 11 -99 44.2 -99 -99 -99 1904 2012 normal 12 -99 44.5 -99 -99 -99 1918 2012 normal 18 -99 49.3 -99 -99 -99 1918 2012 normal 24 -99 44.5 -99 -99 -99 1905 2013,2017 normal 36 -99 44.5 -99 -99 -99 1918 2012 normal 48 -99 44.5 -99 -99 -99 1907 2013 normal 60 -99 44.5 -99 -99 -99 1908,1927 2020 normal