1901-2000 Degrees Fahrenheit 1 41.59 41.41 0.18 70 59 1917 1947 2019 2018 normal 1997 2 47.29 46.66 0.63 80 49 1917 2015 2012 2019 normal 3 52.05 50.79 1.26 107 22 1917 2016 2012 2019 top-third 4 54.76 53.23 1.53 112 17 1976 2021 2013 2019 top-third 5 55.31 53.71 1.60 114 15 1917 2021 2019 2018 top-third 6 54.16 52.66 1.50 118 11 1917 2018 2019 2018 top-tenth 7 51.87 50.65 1.22 108 21 1917 2015 2013 2019 top-third 8 49.81 48.07 1.74 120 9 1917 2016 2019 2018 top-tenth 1998 9 47.08 45.27 1.81 120 9 1917 2016 2019 2018 top-tenth 10 44.97 42.71 2.26 124 5 1917 2016 2019 2017 top-tenth 2021 11 43.32 40.89 2.43 122 6 1917 2016 2019 2017 top-tenth 12 42.20 40.04 2.16 121 7 1917 2016 2019 2017 top-tenth 18 46.12 44.25 1.87 121 7 1917 2016 2019 2017 top-tenth 24 41.71 40.04 1.67 114 13 1917,1918 2017 2019 2018 top-tenth 36 41.83 40.02 1.81 117 9 1918 2017 2015 2019 top-tenth 48 42.10 40.01 2.09 121 4 1918 2018 2016 2019 top-tenth 60 42.37 40.00 2.37 123 1 1920 2020 2019 2020 highest