1901-2000 Degrees Fahrenheit 1 73.8 78.8 -5.0 1 128 1967 1930 1967 1966 lowest 2 74.1 77.2 -3.1 4 125 1961 1914 1961 1966 bottom-tenth 1976 3 71.3 74.2 -2.9 3 126 1976 1899 1961 1966 bottom-tenth 4 69.6 70.6 -1.0 27 102 1961 1896 1961 1966 bottom-third 1975 5 66.8 66.6 0.2 63 66 1960 2012 1966 1964 normal 1963,2008 6 62.2 62.7 -0.5 45 84 1947 2012 1966 1964 normal 1915,1973 7 59.2 59.4 -0.2 53 76 1940 2012 1966 1962 normal 8 57.0 57.2 -0.2 49 79 1940 2012 1966 1965 normal 1906,1965 9 56.3 56.4 -0.1 53 75 1940 2012 1966 1965 normal 1901,1942 10 56.4 56.8 -0.4 45 83 1940,1978 2017 1966 1965 normal 11 57.7 58.2 -0.5 37 91 1978 2017 1966 1965 bottom-third 1905,1936,1951,1959,1981,1989 12 59.1 59.9 -0.8 30 98 1977 2017 1964 1966 bottom-third 1951,1975,2013 18 60.1 60.8 -0.7 30 98 1961 2017 1966 1965 bottom-third 1904 24 59.2 59.9 -0.7 28 99 1978 2017 1965 1966 bottom-third 1940,1985 36 59.2 59.9 -0.7 23 103 1979 2018 1966 1959 bottom-third 1994 48 59.1 59.8 -0.7 20 105 1980 2019 1966 1965 bottom-third 1965,1977 60 59.0 59.8 -0.8 18 106 1980 2020 1965 1966 bottom-third