1901-2000 Degrees Fahrenheit 1 66.4 63.4 3.0 113 17 1983 1967 1964 1955 top-third 1970,2002 2 59.0 59.6 -0.6 49 81 1926 2012 1962 1964 normal 3 54.9 55.8 -0.9 41 89 1958 2012 1964 1963 bottom-third 1923,1984,2015 4 53.0 53.2 -0.2 57 73 1978 2012 1964 1957 normal 1934,1956,2022 5 52.0 51.9 0.1 63 66 1978 2012 1964 1957 normal 1919 6 52.9 52.2 0.7 81 48 1977,1978 2017 1964 1957 normal 1916,1933,1955 7 54.0 54.0 0.0 58 71 1977 2017 1964 1957 normal 1944,1987,2007 8 56.7 56.7 0.0 58 71 1977 2017 1964 1957 normal 1910 9 59.2 59.3 -0.1 56 73 1977 2017 1964 1957 normal 1956 10 61.2 61.5 -0.3 52 77 1977 2017 1964 1957 normal 1953,1994 11 62.8 63.0 -0.2 51 78 1977 2017 1964 1957 normal 1906,1912,1985,1990,1994 12 63.6 63.7 -0.1 55 74 1977 2017 1964 1957 normal 1908 18 58.9 59.9 -1.0 22 106 1977,1978 2017 1964 1963 bottom-third 1960,1985 24 62.8 63.7 -0.9 19 109 1978 2017 1964 1963 bottom-third 1960,1961 36 62.9 63.7 -0.8 18 109 1970 1934 1964 1963 bottom-third 1961,1983 48 62.9 63.7 -0.8 19 107 1971,1980 2020 1964 1963 bottom-third 1963 60 62.9 63.7 -0.8 18 107 1980,1981 2020 1964 1963 bottom-third 1963,1966