1901-2000 Degrees Fahrenheit 1 56.5 50.3 6.2 118 12 1895 2019 1949 1944 top-tenth 1944 2 59.3 49.0 10.3 129 1 1978 1950 1949 1950 highest 3 56.7 48.9 7.8 128 1 1978 1950 1949 1950 highest 4 56.1 50.5 5.6 127 2 1977 1932 1949 1932 top-tenth 5 59.0 53.4 5.6 127 2 1977 1932 1949 1932 top-tenth 6 61.5 57.2 4.3 126 3 1977 1932 1949 1932 top-tenth 7 64.1 60.5 3.6 126 3 1977 1932 1949 1932 top-tenth 8 66.2 63.0 3.2 125 4 1977 1932 1949 1932 top-tenth 9 67.5 64.8 2.7 124 5 1977 1932 1949 1932 top-tenth 10 68.1 65.5 2.6 123 6 1977 2017 1949 1932 top-tenth 11 67.6 65.4 2.2 124 5 1977 2017 1949 1932 top-tenth 2019 12 66.7 64.7 2.0 120 9 1977 2017 1949 1937 top-tenth 2023 18 64.2 62.2 2.0 120 8 1978 2017 1949 1933 top-tenth 24 66.6 64.7 1.9 123 5 1978 2017 1949 1923 top-tenth 2021 36 65.8 64.7 1.1 116 11 1970 2018,2019 1949 1934 top-tenth 1922,1924 48 65.6 64.7 0.9 115 11 1970 2020 1949 1937 top-tenth 1934,1937,1957 60 65.6 64.7 0.9 117 8 1970,1971 2020 1949 1934 top-tenth 1926,1953,2017