Contiguous U.S., Maximum Temperature Rankings, August 1978 1901-2000 Degrees Fahrenheit 1 84.83 85.14 -0.31 47 82 1927 2011 1977 1973 normal 1928 2 85.88 85.91 -0.03 56 73 1992 1936 1977 1973 normal 1898 3 84.61 84.39 0.22 65 64 1915 1936 1976 1977 normal 1986 4 81.43 81.53 -0.10 48 81 1915 1934 1976 1977 normal 5 77.82 77.92 -0.10 48 81 1907 1934 1976 1977 normal 6 73.64 73.77 -0.13 52 77 1912 2012 1975 1977 normal 7 68.52 69.63 -1.11 20 109 1912 2012 1975 1977 bottom-third 8 64.31 65.99 -1.68 8 121 1912 2012 1917 1977 bottom-tenth 9 61.97 63.42 -1.45 10 118 1979 2012 1920 1977 bottom-tenth 10 61.11 62.35 -1.24 10 118 1912 2012 1973 1977 bottom-tenth 11 61.62 62.76 -1.14 10 118 1912 2012 1973 1977 bottom-tenth 12 62.97 64.01 -1.04 13 115 1912 2012 1975 1977 bottom-tenth 18 67.07 67.26 -0.19 43 85 1899 2012 1975 1977 normal 24 63.47 64.00 -0.53 25 102 1913 2017 1973 1977 bottom-third 36 63.90 63.98 -0.08 50 76 1905 2018 1977 1976 normal 1952 48 63.66 63.97 -0.31 30 95 1915 2018 1975 1977 bottom-third 1974 60 63.85 63.96 -0.11 45 79 1907 2020 1977 1967 normal 1923,1928