1901-2000 Degrees Fahrenheit 1 68.0 71.6 -3.6 6 123 1976 1899 1976 1980 bottom-tenth 2 67.5 67.6 -0.1 54 75 1997 1896 1980 1979 normal 1966,1979 3 62.7 63.7 -1.0 28 101 1971 1908 1980 1979 bottom-third 2014 4 59.1 60.1 -1.0 31 98 1960,1971 1927 1980 1979 bottom-third 1912 5 55.4 57.4 -2.0 16 113 1940 2017 1979 1980 bottom-third 1970 6 53.8 55.8 -2.0 17 111 1978 2017 1978 1980 bottom-third 1971 7 53.8 55.7 -1.9 16 112 1940 2017 1978 1980 bottom-third 1901 8 54.7 56.8 -2.1 8 120 1977 2017 1978 1980 bottom-tenth 1899,1968 9 57.4 58.9 -1.5 15 113 1977 2017 1978 1980 bottom-third 1900,1984 10 59.9 61.0 -1.1 23 105 1977 2017 1980 1979 bottom-third 1905,1906,1971,2001 11 61.9 62.8 -0.9 28 100 1977 2017 1980 1979 bottom-third 1941,1983 12 63.3 64.0 -0.7 26 102 1977 2017 1980 1979 bottom-third 1900,1961,1963,1976,1983,1988,2013 18 60.3 61.3 -1.0 18 109 1977 2017 1980 1976 bottom-third 1900,1901,1960,1982,2014 24 62.9 64.0 -1.1 9 118 1978 2017 1978 1980 bottom-tenth 2014 36 63.3 64.0 -0.7 17 109 1970,1978 2018,2019 1980 1976 bottom-third 1901,1964,1965,1984,2015 48 63.0 64.0 -1.0 7 118 1971 2019,2020 1980 1977 bottom-tenth 1902,1905,1968 60 62.6 64.0 -1.4 1 123 1970,1971,1980,1981 2020 1980 1980 lowest 1970,1971,1980