1901-2000 Degrees Fahrenheit 1 60.5 61.2 -0.7 45 84 1945 2012 1998 1997 normal 1973,1976 2 55.5 56.6 -1.1 27 102 1907 2018 1995 1998 bottom-third 1898,1930,1943,1947,1955,1973 3 50.3 51.8 -1.5 19 110 1917 2012 1995 1998 bottom-third 4 47.6 47.3 0.3 67 62 1917 2012 1998 1997 normal 1916,1930,1949 5 44.7 43.3 1.4 97 32 1903 2012 1998 1996 top-third 1930,1943 6 42.2 40.1 2.1 109 20 1917 2012 1998 1994 top-third 7 40.0 38.0 2.0 109 19 1917 1934 1998 1996 top-third 1911,2022 8 39.7 37.4 2.3 114 14 1917 1934 1998 1996 top-third 1986,2009,2016 9 40.5 38.4 2.1 113 15 1917 1934 1998 1996 top-third 1996,2002 10 42.7 40.3 2.4 116 12 1917 1934 1998 1981 top-tenth 11 44.8 42.6 2.2 117 11 1917 1934 1998 1981 top-tenth 1954,2004 12 46.9 44.6 2.3 116 12 1917 1934 1998 1981 top-tenth 18 44.9 43.1 1.8 112 16 1913 2018 1998 1954 top-third 1954 24 46.0 44.6 1.4 107 20 1913 2018 1998 1982 top-third 1934 36 45.7 44.6 1.1 103 23 1914 2018 1998 1996 top-third 1956,1996,2009 48 45.8 44.6 1.2 102 23 1915 2018 1998 1937 top-third 1936 60 45.8 44.5 1.3 101 23 1917 2018 1998 1938 top-third