1901-2000 Degrees Fahrenheit 1 51.4 51.4 0.0 51 79 1973 2002 1999 2003 normal 1942,1974 2 50.6 47.5 3.1 116 14 1973 1989,2017 2003 2000 top-third 1934,2000 3 45.4 44.2 1.2 86 44 1964 2017 1998 2003 normal 2008 4 43.2 41.6 1.6 95 35 1964 2017 2001 2003 top-third 1925,1935 5 41.9 40.1 1.8 101 28 1964 2017 2002 2003 top-third 6 42.4 40.5 1.9 106 23 1919 2017 2003 2002 top-third 1989,2002 7 44.7 42.4 2.3 115 14 1913 2017 2003 2000 top-third 2011 8 47.4 45.2 2.2 116 13 1913 2017 2003 2000 top-tenth 2020 9 50.3 48.0 2.3 116 13 1913 2017 2003 2000 top-tenth 1911 10 52.9 50.5 2.4 120 9 1913 2017 2003 2000 top-tenth 2000,2016 11 54.4 52.2 2.2 117 12 1913 2017 2003 1999 top-tenth 2015 12 55.1 52.9 2.2 122 7 1913 2017 2003 1999 top-tenth 2006 18 50.9 48.7 2.2 119 9 1913 2018 2003 2000 top-tenth 2016 24 54.9 52.8 2.1 118 10 1913 2018 2003 2000 top-tenth 2016,2020 36 54.9 52.8 2.1 118 9 1914 2018,2019 2003 2004 top-tenth 48 54.7 52.8 1.9 115 11 1915 2018,2019,2020 2003 2002 top-tenth 2002,2006 60 54.7 52.8 1.9 115 10 1916,1917,1977 2021 2003 2003 top-tenth 2003,2006