1901-2000 Degrees Fahrenheit 1 65.6 68.6 -3.0 13 116 1918 1925 1976 1980 bottom-tenth 2 69.5 71.7 -2.2 11 118 1967 1936 1976 1980 bottom-tenth 3 71.8 73.2 -1.4 19 110 1967 1936 1979 1980 bottom-third 4 72.3 73.1 -0.8 35 94 1967 1936 1979 1980 bottom-third 1910 5 69.9 71.3 -1.4 16 113 1967 1936 1979 1980 bottom-third 1984 6 68.3 68.6 -0.3 43 86 1976 2010 1979 1980 bottom-third 1897,1903,1909,2013 7 64.6 65.3 -0.7 33 96 1950 1921 1979 1980 bottom-third 1904,1956 8 61.1 61.7 -0.6 40 89 1958 1921 1980 1977 bottom-third 1899,1901,1926,1994 9 57.5 58.6 -1.1 27 102 1978 1921 1979 1980 bottom-third 1918 10 55.4 56.4 -1.0 30 98 1978 2012 1979 1980 bottom-third 1899,1977 11 54.4 55.4 -1.0 28 100 1978 2012 1979 1980 bottom-third 1905,1926,1966,1967,2003 12 54.3 55.5 -1.2 21 107 1978 2012 1979 1980 bottom-third 1899,1924,1967 18 59.3 59.9 -0.6 31 97 1918 2012,2017 1980 1976 bottom-third 1908,1929,1960 24 54.7 55.5 -0.8 20 107 1978,1979 2017 1980 1976 bottom-third 1960,1994 36 54.3 55.5 -1.2 7 119 1979 2018 1980 1977 bottom-tenth 1918,1960,1963,1971 48 53.9 55.5 -1.6 3 122 1979,1980 2019 1980 1978 bottom-tenth 60 53.9 55.5 -1.6 1 123 1981 2020 1981 1980 lowest