1901-2000 Degrees Fahrenheit 1 38.8 44.1 -5.3 13 116 1963,1989 2021 1963 1982 bottom-tenth 1960 2 45.1 47.8 -2.7 14 115 1976 2015 1976 1982 bottom-third 1962 3 50.8 52.6 -1.8 18 111 1976 2015 1980 1982 bottom-third 1963 4 56.0 57.9 -1.9 13 116 1976 1931 1981 1982 bottom-tenth 1995 5 61.0 62.2 -1.2 20 109 1976 1931,2016 1981 1982 bottom-third 1932,1966 6 64.2 65.1 -0.9 20 109 1976 2016 1981 1982 bottom-third 1958 7 65.6 66.8 -1.2 14 115 1976 2016 1979 1982 bottom-third 1966,1969 8 65.8 67.1 -1.3 13 116 1976 1921,1998 1979 1982 bottom-tenth 1963 9 64.6 66.5 -1.9 8 121 1976 2015 1976 1982 bottom-tenth 10 63.3 65.1 -1.8 5 124 1976 1921 1976 1982 bottom-tenth 1989 11 61.6 63.4 -1.8 7 122 1901,1976 1921 1976 1982 bottom-tenth 1989 12 59.8 61.6 -1.8 7 122 1976 1921 1979 1982 bottom-tenth 18 61.7 62.8 -1.1 7 121 1968 2016 1977 1982 bottom-tenth 1917,1960,1967 24 60.6 61.6 -1.0 12 116 1969,1979 1922 1981 1982 bottom-tenth 1970,1981 36 60.5 61.6 -1.1 9 118 1969,1978 1923 1981 1982 bottom-tenth 48 60.6 61.6 -1.0 9 117 1979 2019 1982 1982 bottom-tenth 1963,1982 60 60.4 61.6 -1.2 3 122 1980 2019,2020 1980 1982 bottom-tenth 1970