1901-2000 Degrees Fahrenheit 1 47.5 50.1 -2.6 37 93 1895 1932 1970 1969 bottom-third 1936,1977 2 47.6 48.7 -1.1 50 80 1978 1950 1970 1965 normal 3 48.7 48.6 0.1 67 62 1978 1932 1970 1965 normal 1947 4 49.1 50.1 -1.0 40 89 1977 1932 1970 1966 bottom-third 1924,1948,1955 5 52.2 53.1 -0.9 41 88 1977 1932 1970 1966 bottom-third 1910,1951,2011 6 56.5 56.9 -0.4 50 79 1977 1932 1970 1965 normal 1903,2011 7 59.8 60.2 -0.4 46 83 1977 1932 1970 1965 normal 1914,1975,1998 8 62.3 62.8 -0.5 40 89 1977 1932 1970 1965 bottom-third 1896,1975,1981,1996,2001 9 63.9 64.5 -0.6 34 95 1977 1932 1970 1965 bottom-third 1915,1994 10 64.6 65.3 -0.7 27 102 1977 1932,1999,2017 1970 1966 bottom-third 1936,1962,1975,1988,1998,2015 11 64.8 65.2 -0.4 41 88 1977 2017 1970 1966 bottom-third 1914,1915,1959,1979,1996 12 63.9 64.5 -0.6 38 91 1977 2017 1970 1966 bottom-third 18 60.5 62.0 -1.5 8 120 1977 2017 1970 1967 bottom-tenth 1984 24 63.0 64.5 -1.5 5 123 1977,1978 2017 1970 1968 bottom-tenth 36 62.9 64.5 -1.6 4 123 1970 2018 1970 1969 bottom-tenth 1977 48 62.9 64.5 -1.6 2 124 1970 2019 1970 1969 bottom-tenth 1979,1980 60 63.0 64.5 -1.5 1 124 1970,1971,1980 2020 1970 1970 lowest 1970,1980