1901-2000 Degrees Fahrenheit 1 64.0 63.4 0.6 80 50 1983 1967 1904 1900 normal 1917,2016 2 62.2 59.6 2.6 111 19 1926 2012 1904 1905 top-third 1918 3 54.3 55.8 -1.5 32 98 1958 2012 1902 1904 bottom-third 4 50.4 53.2 -2.8 13 117 1978 2012 1902 1904 bottom-tenth 1902 5 49.4 51.9 -2.5 13 116 1978 2012 1902 1904 bottom-tenth 1960,2014 6 49.9 52.2 -2.3 14 115 1977,1978 2017 1902 1904 bottom-third 1912 7 52.2 54.0 -1.8 22 107 1977 2017 1902 1904 bottom-third 8 55.4 56.7 -1.3 24 105 1977 2017 1904 1903 bottom-third 1981,1993 9 58.1 59.3 -1.2 22 107 1977 2017 1904 1903 bottom-third 1996 10 60.2 61.5 -1.3 19 110 1977 2017 1902 1904 bottom-third 1971 11 62.0 63.0 -1.0 24 105 1977 2017 1904 1903 bottom-third 1963,1988 12 62.8 63.7 -0.9 22 107 1977 2017 1904 1903 bottom-third 1941,1975,1983 18 58.6 59.9 -1.3 14 114 1977,1978 2017 1902 1904 bottom-third 1961,2014 24 62.5 63.7 -1.2 8 120 1978 2017 1905 1904 bottom-tenth 1959,1980,1981,2015 36 63.5 63.7 -0.2 39 88 1970 1934 1904 1903 bottom-third 1920,1975,2016 48 63.1 63.7 -0.6 24 102 1971,1980 2020 1902 1904 bottom-third 1902,1996 60 63.2 63.7 -0.5 23 102 1980,1981 2020 1905 1904 bottom-third 1961,1974,1987