1901-2000 Degrees Fahrenheit 1 29.8 30.8 -1.0 54 76 1899 2012 1998 2000 normal 2 21.1 25.4 -4.3 29 101 1899 2012 1989 2000 bottom-third 1900 3 21.6 21.9 -0.3 57 73 1936 2012 1996 2000 normal 4 18.9 21.4 -2.5 29 100 1936 2012 1982 2000 bottom-third 5 20.0 23.5 -3.5 16 113 1899,1936 2000 1997 2000 bottom-third 1904 6 25.0 27.5 -2.5 21 108 1899 2012 1997 2000 bottom-third 1904 7 30.3 32.2 -1.9 26 103 1899 2012 1997 2000 bottom-third 8 35.7 37.0 -1.3 34 95 1899 2012 1997 2000 bottom-third 9 39.8 40.9 -1.1 36 93 1899 2012 1997 2000 bottom-third 10 42.3 43.4 -1.1 33 96 1899 2012 1997 2000 bottom-third 11 43.7 44.6 -0.9 36 93 1899 2012 1997 2000 bottom-third 1907,1930,1947,1950,1966 12 43.8 44.6 -0.8 38 91 1899 2016 1997 2000 bottom-third 1908,1930,1948,1966 18 40.9 38.9 2.0 110 18 1979 2013 1998 2000 top-third 1942,2012 24 46.0 44.6 1.4 99 29 1952 2000 1998 2000 top-third 1902,1941,2023 36 46.7 44.5 2.2 118 9 1918 2000 1999 2000 top-tenth 48 46.5 44.5 2.0 117 9 1899,1918 2007 2000 1992 top-tenth 1934,1990 60 45.6 44.5 1.1 101 24 1920 2006,2008 2000 1993 top-third 2015