1901-2000 Degrees Fahrenheit 1 79.0 80.3 -1.3 23 106 1967 2007 1976 1978 bottom-third 1927,1986,2017 2 79.4 80.6 -1.2 22 107 1967 1902 1976 1978 bottom-third 3 78.2 79.9 -1.7 10 119 1967 1902 1976 1978 bottom-tenth 1963 4 76.1 77.8 -1.7 11 118 1976 1902 1976 1978 bottom-tenth 1973 5 73.6 74.9 -1.3 12 117 1961 1902 1976 1978 bottom-tenth 1907,1940,1974,1975,2021 6 70.7 71.7 -1.0 21 108 1971 1902 1976 1978 bottom-third 1950,1958,1989,1996 7 66.9 68.3 -1.4 11 118 1971 2012 1978 1977 bottom-tenth 1920,1969 8 63.2 65.5 -2.3 5 124 1940,1978 2012 1978 1977 bottom-tenth 9 61.3 63.4 -2.1 5 123 1978 2012 1978 1977 bottom-tenth 1970 10 61.2 62.4 -1.2 19 109 1940 1932 1978 1976 bottom-third 1904,1996 11 61.3 62.6 -1.3 15 113 1978 1932 1978 1976 bottom-third 1963,1981,1988 12 62.7 63.7 -1.0 22 106 1977 1932 1978 1975 bottom-third 1915,2001,2013 18 65.4 66.4 -1.0 14 114 1977,1984 1922,2017 1978 1978 bottom-third 1940,1963,1967,1973,1978,1994 24 62.1 63.7 -1.6 6 121 1978 2017 1978 1976 bottom-tenth 1984 36 61.9 63.7 -1.8 4 122 1970 1934 1978 1977 bottom-tenth 48 62.0 63.7 -1.7 2 123 1971 2019 1971 1978 bottom-tenth 1970 60 62.2 63.7 -1.5 2 122 1971 2020 1971 1978 bottom-tenth 1970,1980,1981