1991-2020 Degrees Fahrenheit 1 44.4 44.8 -0.4 44 50 1983 2021 2013 2016 normal 2 51.0 48.7 2.3 85 9 1932 2021 2015 2016 top-tenth 3 55.5 54.1 1.4 81 13 1932 2021 2015 2016 top-third 1977,2007 4 60.5 59.2 1.3 80 14 1932 2021 2014 2016 top-third 1954 5 64.3 63.7 0.6 71 23 1976 2021 2014 2016 top-third 2014 6 67.3 66.9 0.4 72 22 1976 2021 2014 2016 top-third 7 69.4 68.9 0.5 76 18 1976 1998 2014 2016 top-third 1946,1965 8 69.7 69.5 0.2 72 21 1976 1998 2014 2016 top-third 1946,1965,1999 9 69.3 68.9 0.4 73 20 1976 1998,2011,2022 2015 2016 top-third 1954,2015,2018,2019 10 68.7 67.7 1.0 86 7 1976 2011 2015 2016 top-tenth 1934,2021 11 67.5 65.9 1.6 90 3 1976 2011 2016 2016 top-tenth 2016 12 65.7 64.1 1.6 88 3 1976 1998 2016 2012 top-tenth 18 66.9 65.0 1.9 90 1 1976 2017 2016 2017 highest 24 65.6 64.1 1.5 87 2 1976 2012 2016 2012 top-tenth 36 64.9 64.1 0.8 84 3 1976 2000,2018 2016 2013 top-tenth 2012,2013,2022 48 64.7 64.1 0.6 80 5 1976 2001 2016 2014 top-tenth 2014,2021,2022 60 64.4 64.0 0.4 72 11 1961,1976 2020 2016 2016 top-third 2012,2013,2014,2016