1901-2000 Degrees Fahrenheit 1 40.1 45.5 -5.4 14 116 1895 2018 1958 1962 bottom-third 2 38.4 44.1 -5.7 11 119 1978 1950 1958 1962 bottom-tenth 3 39.0 44.1 -5.1 6 123 1978 1932 1940 1962 bottom-tenth 1936 4 41.7 45.9 -4.2 6 123 1977 1932 1940 1962 bottom-tenth 5 46.3 49.2 -2.9 10 119 1977 1932 1958 1962 bottom-tenth 6 50.8 53.3 -2.5 11 118 1977 1932 1958 1962 bottom-tenth 7 54.9 57.0 -2.1 12 117 1977 2017 1958 1962 bottom-tenth 2010 8 58.1 59.9 -1.8 15 114 1977 2017 1958 1962 bottom-third 9 60.2 61.7 -1.5 16 113 1977 2017 1958 1962 bottom-third 1969 10 61.6 62.5 -0.9 25 104 1977 2017 1958 1962 bottom-third 1908,1975,1985,2015 11 61.3 62.4 -1.1 20 109 1977 2017 1958 1962 bottom-third 1958,1985,1993 12 60.3 61.6 -1.3 12 117 1977 2017 1961 1962 bottom-tenth 1969,1980 18 58.3 58.9 -0.6 31 97 1977 2017 1962 1960 bottom-third 1906,1919,1960,1976 24 60.7 61.6 -0.9 20 108 1978 2017 1962 1961 bottom-third 1961,1982 36 60.5 61.6 -1.1 6 121 1978,1979 2018 1963 1962 bottom-tenth 1971 48 60.7 61.6 -0.9 13 113 1980 2019,2020 1961 1962 bottom-tenth 1977,1984 60 60.7 61.6 -0.9 9 116 1980,1981 2020 1962 1962 bottom-tenth 1905,1962,1964,1977,1978,1982