1901-2000 Degrees Fahrenheit 1 37.7 45.5 -7.8 7 123 1895 2018 1958 1967 bottom-tenth 2 39.0 44.1 -5.1 13 117 1978 1950 1963 1967 bottom-tenth 1899 3 42.2 44.1 -1.9 27 102 1978 1932 1964 1967 bottom-third 1915,1969 4 43.7 45.9 -2.2 19 110 1977 1932 1964 1967 bottom-third 1996 5 46.9 49.2 -2.3 15 114 1977 1932 1963 1967 bottom-third 6 50.5 53.3 -2.8 8 121 1977 1932 1958 1967 bottom-tenth 1958 7 53.8 57.0 -3.2 3 126 1977 2017 1918 1967 bottom-tenth 1918 8 56.5 59.9 -3.4 2 127 1977 2017 1902 1967 bottom-tenth 1902 9 58.6 61.7 -3.1 2 127 1977 2017 1968 1967 bottom-tenth 10 59.4 62.5 -3.1 2 127 1977 2017 1968 1967 bottom-tenth 11 60.0 62.4 -2.4 4 125 1977 2017 1918 1967 bottom-tenth 12 59.8 61.6 -1.8 5 124 1977 2017 1918 1967 bottom-tenth 1984 18 57.3 58.9 -1.6 8 120 1977 2017 1959 1967 bottom-tenth 1959 24 60.2 61.6 -1.4 6 122 1978 2017 1905 1967 bottom-tenth 1985 36 60.7 61.6 -0.9 14 113 1978,1979 2018 1963 1967 bottom-third 1961 48 61.1 61.6 -0.5 23 103 1980 2019,2020 1964 1967 bottom-third 1996 60 61.1 61.6 -0.5 23 102 1980,1981 2020 1967 1967 bottom-third 1967,1997