1901-2000 Degrees Fahrenheit 1 37.4 31.0 6.4 118 11 1989 2015 2013 2012 top-tenth 2 39.4 36.3 3.1 106 23 1917 2015 2013 2011 top-third 3 44.7 41.5 3.2 116 13 1904 2015 2013 2012 top-tenth 2012,2016 4 49.6 46.6 3.0 115 14 1917 2015 2013 2011 top-third 5 53.4 51.0 2.4 110 19 1904 2015 2013 2012 top-third 1971 6 56.6 54.2 2.4 110 19 1904 2015 2013 2012 top-third 7 58.0 55.7 2.3 112 17 1904 2015 2013 2012 top-third 1998 8 58.0 55.8 2.2 113 16 1917 2015 2013 2012 top-third 2007 9 56.8 54.6 2.2 112 17 1917 2015 2013 2012 top-third 1949,1990,2005,2019 10 54.4 52.8 1.6 99 30 1917 2021 2009 2013 top-third 1983 11 51.9 50.5 1.4 97 32 1904 2012 2007 2013 top-third 1952,2007 12 49.7 48.6 1.1 94 35 1904 2012 2004 2013 top-third 1979 18 51.8 50.5 1.3 99 29 1904 2012 2009 2013 top-third 1932,2004,2005,2009 24 50.2 48.6 1.6 105 23 1905 2021 2005 2013 top-third 1954 36 51.1 48.6 2.5 118 9 1905 2022 2011 2013 top-tenth 1999,2000,2011 48 51.2 48.5 2.7 118 8 1907 2022 2011 2013 top-tenth 60 51.4 48.5 2.9 121 4 1907 2022 2013 2013 top-tenth 2012,2013