1901-2000 Degrees Fahrenheit 1 43.75 41.69 2.06 100 29 1911 1999 2010 2009 top-third 2 49.42 47.91 1.51 105 24 1976 2016 2010 2007 top-third 3 54.98 53.55 1.43 109 20 1976 2016 2010 2010 top-third 2010 4 59.98 58.19 1.79 117 12 1976 2016 2010 2007 top-tenth 5 63.21 61.28 1.93 120 9 1976 2016 2010 2007 top-tenth 6 64.32 62.48 1.84 120 9 1976 2016 2010 2007 top-tenth 7 63.57 62.15 1.42 113 16 1976 2016 2010 2007 top-third 1963 8 62.12 60.77 1.35 113 16 1907 2016 2009 2010 top-third 9 60.01 58.62 1.39 114 15 1917 2016 2009 2010 top-third 10 57.31 56.14 1.17 105 24 1917 2016 2010 2007 top-third 11 54.80 53.78 1.02 100 29 1912 2012 2009 2010 top-third 12 52.94 52.03 0.91 99 29 1917 2016 2010 2007 top-third 1992 18 56.64 55.51 1.13 110 18 1917 2016 2010 2007 top-third 24 52.84 52.02 0.82 96 31 1917 2017 2010 2008 top-third 1992 36 52.75 52.01 0.74 93 33 1917 2017 2010 2009 top-third 48 52.67 51.99 0.68 92 33 1918 2018 1997 2010 top-third 1988 60 52.92 51.99 0.93 100 24 1920 2020 1998 2010 top-third