1901-2000 Degrees Fahrenheit 1 65.1 64.4 0.7 81 49 1901 1967 1976 1977 normal 1914 2 59.1 60.7 -1.6 28 102 1915 1908 1971 1977 bottom-third 1920 3 52.9 57.2 -4.3 1 129 1958,1978 1927 1958 1977 lowest 1958 4 49.2 54.7 -5.5 1 129 1978 2017 1978 1977 lowest 5 48.8 53.4 -4.6 1 128 1978 2017 1978 1977 lowest 6 50.2 53.7 -3.5 2 127 1977 2017 1977 1976 bottom-tenth 1899,2010 7 51.8 55.3 -3.5 2 127 1977 2017 1977 1976 bottom-tenth 8 55.0 57.8 -2.8 3 126 1977 2017 1977 1976 bottom-tenth 1968 9 57.8 60.3 -2.5 5 124 1977 2017 1977 1976 bottom-tenth 1970 10 60.3 62.4 -2.1 7 122 1977 2017 1977 1976 bottom-tenth 1915 11 62.1 63.8 -1.7 6 123 1977 2017 1977 1976 bottom-tenth 1899,1940,1958 12 63.0 64.5 -1.5 10 119 1977 2017 1977 1976 bottom-tenth 1918,1958,1993 18 58.6 60.9 -2.3 1 127 1977,1978 2017 1977 1977 lowest 1977 24 62.0 64.5 -2.5 1 127 1978 2017 1978 1977 lowest 36 62.7 64.5 -1.8 2 125 1970 2019 1970 1977 bottom-tenth 1979 48 62.9 64.5 -1.6 4 122 1971 2020 1971 1977 bottom-tenth 60 63.5 64.5 -1.0 8 117 1971 2020 1973 1977 bottom-tenth 1962,1968,1973