1991-2020 Degrees Fahrenheit 1 35.0 27.4 7.6 123 2 1925 2005 2002 2003 top-tenth 2 33.5 27.7 5.8 121 3 1920 1981 2002 1981 top-tenth 3 34.8 31.5 3.3 118 6 1920 1981 2002 2000 top-tenth 4 38.8 36.9 1.9 115 9 1920 2017 2002 2000 top-tenth 5 44.1 42.9 1.2 109 15 1913,1920 2017 2001 2002 top-third 2005,2012 6 49.3 48.4 0.9 109 15 1913 2017 2001 2002 top-third 1995,2000 7 53.9 52.7 1.2 117 7 1913 2023 2002 2002 top-tenth 1981,2002 8 56.6 55.2 1.4 119 5 1913 2017,2018 2002 2003 top-tenth 2019 9 57.3 55.9 1.4 117 7 1913 2018,2022 2002 2002 top-tenth 1995,2002 10 57.1 55.5 1.6 118 6 1913 2022 2002 2003 top-tenth 11 55.6 54.5 1.1 115 9 1913 2018 2001 2002 top-tenth 2005 12 53.5 52.9 0.6 112 12 1913 2018 2000 2002 top-tenth 2015,2016 18 52.2 51.4 0.8 113 10 1913 2018 2002 2002 top-tenth 1997,2002 24 53.8 52.9 0.9 116 7 1914 2019 2001 2002 top-tenth 36 53.8 52.8 1.0 117 5 1915,1919 2019 2002 2003 top-tenth 2017,2021,2022 48 53.6 52.8 0.8 113 8 1920 2019 2002 2003 top-tenth 2005 60 53.4 52.7 0.7 110 10 1917 2019,2022 2002 2003 top-tenth 2017