1901-2000 Degrees Fahrenheit 1 74.3 71.7 2.6 105 24 1967 1925 1895 1895 top-third 2 75.6 74.3 1.3 100 29 1967 1925 1895 1895 top-third 1910,1977 3 75.6 75.5 0.1 64 65 1967 1925 1895 1895 normal 1922,1947 4 75.4 75.3 0.1 66 63 1967 1925 1895 1895 normal 1905,1990,1991 5 73.6 73.8 -0.2 54 75 1967 1925 1895 1895 normal 1948,1949,1958,2008 6 71.4 71.4 0.0 57 72 1997 1925 1895 1895 normal 1960,1962,2000 7 68.3 68.4 -0.1 50 79 1992 1921 1895 1895 normal 1926,1932,1946,1970,1990,2004,2005,2008 8 63.8 65.2 -1.4 11 118 1947,1958 1925 1895 1895 bottom-tenth 1979,2013 9 60.9 62.4 -1.5 16 113 1940 1921 1895 1895 bottom-third 1947 10 -99 60.3 -99 -99 -99 1940 2016 normal 11 -99 59.3 -99 -99 -99 1940 2016 normal 12 -99 59.4 -99 -99 -99 1940 2016 normal 18 -99 63.4 -99 -99 -99 1977 2016,2017 normal 24 -99 59.4 -99 -99 -99 1969,1970,1978 2017 normal 36 -99 59.4 -99 -99 -99 1970 2018 normal 48 -99 59.4 -99 -99 -99 1970 2019 normal 60 -99 59.4 -99 -99 -99 1970,1971 2020 normal