1901-2000 Degrees Fahrenheit 1 59.88 59.06 0.82 92 37 1950 2022 1997 1998 top-third 1900 2 60.81 59.80 1.01 99 30 1950 2022 1997 1998 top-third 3 59.28 58.41 0.87 96 33 1915 2021 1997 1998 top-third 4 56.31 55.67 0.64 89 40 1907 2018 1997 1998 top-third 5 52.98 52.25 0.73 95 34 1907 2012 1997 1998 top-third 6 49.29 48.54 0.75 96 33 1917 2012 1997 1998 top-third 7 46.28 44.87 1.41 111 18 1917 2012 1997 1998 top-third 8 43.38 41.73 1.65 113 16 1917 2012 1997 1998 top-third 9 41.35 39.61 1.74 115 13 1917 2012 1997 1998 top-tenth 1992,2018 10 40.72 38.72 2.00 119 9 1917 2016 1997 1998 top-tenth 11 40.96 38.97 1.99 118 10 1917 2016 1997 1998 top-tenth 2021 12 42.21 40.04 2.17 122 6 1917 2016 1998 1999 top-tenth 18 44.76 42.87 1.89 121 7 1917 2016 1998 1999 top-tenth 24 42.18 40.04 2.14 122 5 1918 2017 1998 1999 top-tenth 36 41.55 40.02 1.53 112 14 1918 2017 1998 1999 top-third 48 41.19 40.01 1.18 104 21 1918 2018 1998 1999 top-third 60 41.25 40.00 1.25 104 20 1920 2020 1998 1999 top-third 2014