1901-2000 Degrees Fahrenheit 1 59.1 56.3 2.8 105 24 1914,1918 2018 2003 2004 top-third 1980 2 63.3 59.6 3.7 123 6 1963 2018 2004 1906 top-tenth 3 64.9 61.3 3.6 125 4 1963 2018 2004 2005 top-tenth 4 64.3 60.9 3.4 123 6 1927 2018 2004 2005 top-tenth 2021 5 60.9 58.9 2.0 114 15 1963,1967 2018 2003 2004 top-third 1959,1987,1998 6 57.9 55.9 2.0 113 16 1907,1927 2018,2019 2003 2004 top-third 1959 7 54.0 52.5 1.5 105 24 1967 2010 2001 2004 top-third 1959,2009 8 50.6 49.0 1.6 110 19 1907,1963 2012 2003 2004 top-third 2000,2009 9 47.8 46.2 1.6 108 21 1940 2012 2003 2004 top-third 1898,1973,1989,2008,2013 10 45.9 44.3 1.6 106 22 1904 2012 2003 2004 top-third 1898,1953,1999 11 45.2 43.4 1.8 108 20 1904 2012 2003 2004 top-third 1973,2007,2008,2013 12 45.3 43.5 1.8 108 20 1918 2012 2003 2004 top-third 18 49.9 47.7 2.2 117 11 1918 2012 2004 2005 top-tenth 2013 24 45.4 43.5 1.9 111 16 1905 2017 2004 1999 top-third 1991 36 45.1 43.5 1.6 108 18 1918 2018,2021 2003 2004 top-third 48 45.4 43.5 1.9 112 13 1905 2019,2020 2004 2005 top-third 2007 60 45.0 43.5 1.5 105 19 1967 2020 2004 2002 top-third