1901-2000 Degrees Fahrenheit 1 60.2 55.1 5.1 118 12 1960 2012 1896 1897 top-tenth 2 55.7 51.6 4.1 115 15 1958 2012 1896 1897 top-third 3 51.0 49.4 1.6 91 39 1978 2012,2023 1896 1897 top-third 1913,1991,2021 4 49.9 48.7 1.2 82 47 1978 2017 1896 1897 normal 5 51.4 49.7 1.7 100 29 1977 2017 1896 1897 top-third 1937,2002,2005,2019,2021 6 53.3 52.0 1.3 90 39 1977 2017 1896 1897 top-third 1917,1938 7 56.6 55.3 1.3 96 33 1977 2017 1896 1897 top-third 1935 8 59.8 58.3 1.5 105 24 1977 2017 1896 1897 top-third 1911,2021 9 62.1 60.7 1.4 107 22 1977 2017 1896 1897 top-third 1898,1939,2008 10 63.7 62.4 1.3 108 21 1977 2017 1896 1897 top-third 1903,1935,2000 11 64.8 63.1 1.7 116 13 1977 2017 1896 1897 top-tenth 1903,1927 12 65.1 63.1 2.0 120 9 1977 2017 1896 1897 top-tenth 1922 18 60.1 59.4 0.7 87 41 1978 2017 1897 1897 top-third 1937,1944,1975 24 63.7 63.1 0.6 91 37 1978 2017 1897 1897 top-third 1937,1953,1956,1987,2007 36 -99 63.1 -99 -99 -99 1970 2018 normal 48 -99 63.1 -99 -99 -99 1970,1971,1980 2020 normal 60 -99 63.1 -99 -99 -99 1970,1971,1980,1981 2020 normal