1901-2000 Degrees Fahrenheit 1 81.5 71.7 9.8 128 1 1967 1925 1924 1925 highest 2 79.8 74.3 5.5 128 1 1967 1925 1924 1925 highest 3 79.8 75.5 4.3 128 1 1967 1925 1924 1925 highest 4 79.7 75.3 4.4 128 1 1967 1925 1924 1925 highest 5 76.9 73.8 3.1 128 1 1967 1925 1924 1925 highest 6 74.8 71.4 3.4 128 1 1997 1925 1924 1925 highest 7 71.6 68.4 3.2 127 2 1992 1921 1924 1921 top-tenth 8 68.7 65.2 3.5 128 1 1947,1958 1925 1924 1925 highest 9 65.6 62.4 3.2 127 2 1940 1921 1924 1921 top-tenth 10 63.2 60.3 2.9 126 2 1940 2016 1924 1921 top-tenth 1921,2012 11 62.0 59.3 2.7 125 3 1940 2016 1924 1925 top-tenth 1932 12 62.0 59.4 2.6 125 3 1940 2016 1924 1925 top-tenth 2017 18 64.9 63.4 1.5 121 7 1977 2016,2017 1924 1922 top-tenth 24 60.2 59.4 0.8 96 31 1969,1970,1978 2017 1924 1923 top-third 1936,1950,1953,1954,1955,1957,1987,1991 36 60.2 59.4 0.8 103 23 1970 2018 1924 1923 top-third 1898,1913,1932,1936,2006 48 60.4 59.4 1.0 114 11 1970 2019 1924 1924 top-tenth 1909,1924,1934 60 60.7 59.4 1.3 119 5 1970,1971 2020 1924 1923 top-tenth