1901-2000 Degrees Fahrenheit 1 63.7 61.0 2.7 116 13 1958 2005 2007 2005 top-tenth 2 56.9 56.7 0.2 62 67 1917 1999 2003 2007 normal 3 52.8 51.0 1.8 105 24 1926 2010 2007 2006 top-third 2017 4 46.1 45.1 1.0 89 40 1926 2012 2007 2006 top-third 1922 5 41.0 39.4 1.6 97 32 1926 2012 2007 2006 top-third 1951,1954,1986,2004,2005,2011 6 37.7 35.4 2.3 110 19 1926 2012 2007 2006 top-third 7 35.4 33.2 2.2 107 21 1907 2012 2007 2006 top-third 1913,1951,1973 8 35.0 33.2 1.8 101 27 1905 2012 2005 2007 top-third 9 36.8 34.5 2.3 107 21 1905 2012 2007 2006 top-third 2000 10 39.0 36.7 2.3 110 18 1905 2012 2007 2006 top-third 1933,2020 11 41.3 39.1 2.2 110 18 1905 2012 2007 2006 top-third 2020 12 43.3 41.4 1.9 109 19 1905 2012 2007 2006 top-third 18 40.7 39.3 1.4 104 24 1905 2012 2005 2007 top-third 1974 24 43.2 41.3 1.9 110 17 1905 2013 2005 2007 top-third 2002 36 43.8 41.3 2.5 120 6 1906 2012 2007 2000 top-tenth 2000,2017 48 43.4 41.3 2.1 117 8 1907 2013 2007 2002 top-tenth 2000,2009,2015,2020,2021 60 43.2 41.3 1.9 111 13 1908 2013 2007 2002 top-third 2009,2011,2018