1901-2000 Degrees Fahrenheit 1 57.9 54.0 3.9 117 13 1967 1989 2015 2013 top-tenth 2 55.2 51.4 3.8 120 10 1967 1934 2012 2015 top-tenth 3 54.1 49.4 4.7 127 3 1922 2015 2014 2015 top-tenth 4 51.7 47.6 4.1 126 4 1922 2015 2013 2015 top-tenth 5 49.8 46.7 3.1 125 4 1917,1949 2015 2013 2015 top-tenth 1986,1996,2018 6 49.4 47.2 2.2 116 13 1917 2015 2013 2015 top-tenth 2020 7 51.7 48.9 2.8 121 8 1917 2015 2013 2015 top-tenth 1992,2021 8 54.2 51.4 2.8 121 8 1917 2015 2013 2015 top-tenth 2000 9 56.7 53.9 2.8 123 6 1917 2015 2014 2015 top-tenth 1959 10 58.5 56.0 2.5 121 8 1917 2015 2013 2015 top-tenth 1959,2004 11 60.0 57.1 2.9 124 5 1917 2015 2014 2015 top-tenth 2014 12 60.0 57.4 2.6 123 6 1917 2015 2013 2015 top-tenth 18 57.5 54.0 3.5 126 2 1949 2015 2014 2015 top-tenth 24 60.9 57.4 3.5 126 2 1913 2015 2014 2015 top-tenth 36 60.7 57.4 3.3 126 1 1913,1917 2016 2015 2016 highest 48 60.4 57.4 3.0 124 2 1913 2018 2015 2016 top-tenth 2017 60 60.0 57.3 2.7 121 4 1913 2018 2015 2016 top-tenth 2022