1901-2000 Degrees Fahrenheit 1 39.1 45.2 -6.1 9 121 1895 2018 1958 1963 bottom-tenth 2 39.0 43.8 -4.8 14 116 1978 1950 1963 1962 bottom-third 3 37.6 43.7 -6.1 3 126 1977,1978 1932 1964 1963 bottom-tenth 4 40.6 45.5 -4.9 2 127 1977 1932 1964 1963 bottom-tenth 5 45.0 48.6 -3.6 5 124 1977 1932 1905 1963 bottom-tenth 1905 6 49.2 52.5 -3.3 4 125 1977 1932 1902 1963 bottom-tenth 1978 7 53.1 56.0 -2.9 5 124 1977 2017 1918 1963 bottom-tenth 1918 8 55.9 58.7 -2.8 3 126 1977 2017 1964 1963 bottom-tenth 9 58.0 60.6 -2.6 3 126 1977 2017 1964 1963 bottom-tenth 10 59.0 61.3 -2.3 4 125 1977 2017 1918 1963 bottom-tenth 11 59.4 61.2 -1.8 7 122 1977 2017 1918 1963 bottom-tenth 12 59.0 60.5 -1.5 12 117 1977 2017 1963 1962 bottom-tenth 18 55.9 57.8 -1.9 6 122 1978 2017 1905 1963 bottom-tenth 24 58.9 60.5 -1.6 7 121 1978 2017 1905 1963 bottom-tenth 36 59.3 60.5 -1.2 8 119 1970 2018 1963 1963 bottom-tenth 1963 48 59.2 60.5 -1.3 6 120 1970 2019 1964 1963 bottom-tenth 1978 60 59.5 60.5 -1.0 12 113 1970 2020 1964 1963 bottom-tenth 1966