1901-2000 Degrees Fahrenheit 1 72.1 71.9 0.2 67 62 1976 1933 2014 2016 normal 1958,2002,2008 2 70.6 68.0 2.6 123 6 1961 1896 2016 2015 top-tenth 1908,1933,2019 3 67.3 64.2 3.1 123 6 1971 1908,2012 2016 2015 top-tenth 4 65.1 60.7 4.4 127 2 1960,1971 1927 2016 1927 top-tenth 5 63.0 57.9 5.1 128 1 1940,1978 2017 2016 2017 highest 6 61.4 56.3 5.1 127 1 1978 2017 2016 2017 highest 7 61.1 56.1 5.0 127 1 1977 2017 2016 2017 highest 8 62.2 57.3 4.9 127 1 1977 2017 2016 2017 highest 9 64.2 59.3 4.9 127 1 1977 2017 2016 2017 highest 10 66.2 61.4 4.8 127 1 1977 2017 2016 2017 highest 11 67.8 63.2 4.6 127 1 1977 2017 2016 2017 highest 12 68.8 64.5 4.3 127 1 1977 2017 2016 2017 highest 18 65.8 61.7 4.1 126 1 1977 2017 2016 2017 highest 24 68.0 64.5 3.5 126 1 1969 2017 2016 2017 highest 36 67.0 64.4 2.6 124 2 1970 2018 2016 2017 top-tenth 2019 48 66.1 64.4 1.7 118 7 1971 2019,2020 2016 1935 top-tenth 1923 60 65.7 64.4 1.3 116 8 1970,1971 2020 2016 1936 top-tenth 1929,1935