1991-2020 Degrees Fahrenheit 1 40.5 40.3 0.2 99 31 1912 2012 2002 2000 top-third 2 34.1 35.7 -1.6 72 56 1899 1992 2002 2000 normal 3 33.9 33.3 0.6 99 27 1912 1999 2002 2000 top-third 4 33.7 32.0 1.7 112 13 1912 1992 2002 2000 top-third 2016 5 34.5 33.1 1.4 111 11 1912 2000 2002 2000 top-tenth 1954,2017 6 36.1 35.9 0.2 94 26 1912 2000 2001 2002 top-third 1987,2013 7 39.9 39.9 0.0 93 26 1912 1999 2001 2002 top-third 2020 8 44.0 44.0 0.0 92 27 1912 1999 2001 2002 top-third 1972,2011 9 47.9 47.5 0.4 99 20 1912 1999 2001 2002 top-third 10 50.5 49.7 0.8 103 15 1912 2022 2002 2002 top-third 1953,2002 11 51.1 50.4 0.7 102 16 1912 1999 2001 2002 top-third 1953,2016 12 51.0 50.2 0.8 105 12 1912 2013 2002 2002 top-tenth 1953,2002,2016 18 46.1 45.4 0.7 98 14 1913 1935 2002 2001 top-third 2016 24 51.0 50.2 0.8 103 7 1913 2000 2002 2000 top-tenth 2005,2022 36 50.7 50.2 0.5 95 11 1910 2000,2001 1999 2002 top-tenth 1935,2007,2014 48 50.9 50.3 0.6 99 3 1913,1918 2002 2001 2002 top-tenth 2001,2004,2006 60 51.2 50.3 0.9 97 1 1913 2003 2002 2003 highest