1991-2020 Degrees Fahrenheit 1 83.6 83.0 0.6 110 19 1903 2022 2005 2002 top-third 1947 2 81.2 80.1 1.1 118 11 1903 2022 2005 1998 top-tenth 3 79.7 76.7 3.0 126 3 1903 2022 2005 2006 top-tenth 4 76.7 73.3 3.4 127 2 1903 2011 2005 2006 top-tenth 2022 5 72.5 70.0 2.5 124 5 1903 2008 2005 2006 top-tenth 6 70.1 67.1 3.0 127 2 1903 2017 2005 2006 top-tenth 7 67.7 65.2 2.5 126 2 1903 2017 2005 2006 top-tenth 8 67.3 64.7 2.6 126 2 1973 2017 2005 2006 top-tenth 9 67.7 65.5 2.2 126 2 1977 2017 2005 2006 top-tenth 10 69.4 67.0 2.4 126 2 1977 2017 2005 2006 top-tenth 11 70.9 68.7 2.2 126 2 1977 2017 2005 2006 top-tenth 12 72.1 70.1 2.0 126 2 1977 2017 2005 2006 top-tenth 2012 18 70.2 69.1 1.1 122 6 1977 2012,2017 2005 2000 top-tenth 2013 24 70.9 70.0 0.9 119 8 1978 2017 2005 2000 top-tenth 36 70.3 70.0 0.3 112 14 1977 2018 2005 2001 top-third 2001,2010,2011 48 69.9 70.0 -0.1 105 20 1978 2018,2019,2020 2005 2002 top-third 1999 60 69.9 70.0 -0.1 105 19 1979 2020 2005 2003 top-third 2003