1901-2000 Degrees Fahrenheit 1 29.9 26.5 3.4 90 40 1977 2006 2011 2012 top-third 2005 2 34.1 28.5 5.6 119 10 1918 1932 2011 2012 top-tenth 2023 3 36.0 32.7 3.3 111 18 1977 1932 2011 2012 top-third 1953,1989 4 40.1 38.0 2.1 98 31 1977 1932 2011 2012 top-third 1900 5 44.9 43.5 1.4 86 43 1977 1932 2011 2012 top-third 6 49.4 48.4 1.0 87 42 1977 1932 2011 2012 top-third 1906,1913,1922,1991 7 53.8 52.1 1.7 108 21 1977 1932 2011 2012 top-third 1934,1974 8 56.0 54.4 1.6 103 26 1977 1932 2011 2012 top-third 1900,1992,2000 9 57.3 55.2 2.1 113 16 1918 1932 2011 2012 top-third 1950,2023 10 56.9 54.7 2.2 119 10 1918 1932 2011 2012 top-tenth 1922 11 56.7 53.3 3.4 128 1 1918 2013 2012 2013 highest 12 54.9 51.3 3.6 128 1 1918 2013 2012 2013 highest 18 53.6 50.3 3.3 126 2 1918 2017 2012 2013 top-tenth 24 54.4 51.3 3.1 127 1 1918 2013 2012 2013 highest 36 53.8 51.3 2.5 126 1 1918 2013 2012 2013 highest 48 53.2 51.3 1.9 123 3 1918 2020 2012 2002 top-tenth 2002 60 52.7 51.3 1.4 117 8 1981 2020,2021 2012 2008 top-tenth 2006,2008