1901-2000 Degrees Fahrenheit 1 61.5 54.6 6.9 125 4 1907 1977 1895 1896 top-tenth 2 54.0 48.7 5.3 127 2 1907 1977 1895 1896 top-tenth 1941,1998 3 43.7 41.9 1.8 97 32 1950 2012 1895 1896 top-third 1918 4 37.3 35.5 1.8 98 31 1917 2012 1895 1896 top-third 1925,1927 5 32.9 30.9 2.0 95 34 1912 2012 1895 1896 top-third 6 30.8 28.8 2.0 102 26 1904,1917 2012 1896 1896 top-third 1908 7 30.5 29.2 1.3 92 36 1904 2012 1896 1896 top-third 8 31.7 31.4 0.3 63 65 1904 2012 1896 1896 normal 1938 9 35.1 34.3 0.8 87 41 1904 2012 1896 1896 top-third 1903,1908,1939,1945 10 38.3 37.6 0.7 86 42 1904 2012 1896 1896 top-third 1900,1910,1955,2001,2011 11 40.9 40.4 0.5 73 55 1904 2012 1896 1896 normal 1948,1984,2008,2018 12 43.0 42.4 0.6 75 53 1904 2012 1896 1896 normal 1910,1915,1989,2018 18 -99 37.8 -99 -99 -99 1918 1999 normal 24 -99 42.4 -99 -99 -99 1905,1918 2017 normal 36 -99 42.3 -99 -99 -99 1918 2000 normal 48 -99 42.3 -99 -99 -99 1918 2001 normal 60 -99 42.3 -99 -99 -99 1920 2002 normal