1901-2000 Degrees Fahrenheit 1 62.6 59.8 2.8 104 25 1907 2006 1969 1967 top-third 2015 2 55.7 55.3 0.4 71 58 1960 2012 1969 1967 normal 1939 3 50.7 51.2 -0.5 49 80 1958 2012 1969 1967 normal 1951,1989 4 46.6 48.4 -1.8 28 101 1978 2017 1969 1967 bottom-third 1928 5 45.1 47.1 -2.0 23 105 1978 2017 1969 1968 bottom-third 6 45.5 47.5 -2.0 19 109 1940,1978 2017 1969 1967 bottom-third 1963,1984,2010 7 47.5 49.4 -1.9 18 110 1978 2017 1969 1967 bottom-third 8 50.2 52.3 -2.1 10 118 1977 2017 1969 1969 bottom-tenth 1915,1940,1969 9 53.1 55.1 -2.0 7 121 1977 2017 1968 1969 bottom-tenth 10 55.9 57.5 -1.6 12 116 1977 2017 1969 1967 bottom-tenth 1951 11 57.7 59.2 -1.5 13 115 1977 2017 1969 1967 bottom-tenth 1940 12 58.5 59.9 -1.4 11 117 1977 2017 1969 1967 bottom-tenth 1904,1993,1996 18 54.1 55.8 -1.7 5 122 1978 2017 1969 1968 bottom-tenth 24 58.4 59.9 -1.5 4 123 1978 2017 1969 1968 bottom-tenth 36 58.0 59.9 -1.9 1 125 1970 2018 1970 1969 lowest 48 58.5 59.9 -1.4 4 121 1980 2020 1970 1969 bottom-tenth 1979 60 58.7 59.9 -1.2 5 119 1980 2020 1962 1969 bottom-tenth 1962