1901-2000 Degrees Fahrenheit 1 68.4 66.0 2.4 104 25 1903 2016 2011 2005 top-third 1984 2 69.9 67.1 2.8 120 9 1903 1955 2011 2005 top-tenth 1937,2022 3 68.1 65.9 2.2 117 12 1903 2005 2011 2010 top-tenth 1959 4 66.2 63.0 3.2 126 3 1927 1955,2018 2011 1955 top-tenth 1949 5 61.8 59.0 2.8 125 4 1907 1955,2010 2011 2010 top-tenth 1949 6 58.7 54.3 4.4 128 1 1926 2012 2011 2012 highest 7 54.6 49.5 5.1 128 1 1926 2012 2011 2012 highest 8 51.0 45.8 5.2 128 1 1912 2012 2011 2012 highest 9 48.9 43.4 5.5 127 1 1904 2012 2011 2012 highest 10 48.3 42.7 5.6 127 1 1904 2012 2011 2012 highest 11 48.4 43.2 5.2 127 1 1926 2012 2011 2012 highest 12 49.6 44.5 5.1 127 1 1918 2012 2011 2012 highest 18 51.8 47.8 4.0 127 1 1918 2012 2011 2012 highest 24 47.7 44.5 3.2 124 3 1905 2017 2011 2012 top-tenth 36 47.6 44.5 3.1 125 1 1906 2012 2011 2012 highest 48 46.9 44.5 2.4 122 3 1907 2013 2011 2012 top-tenth 60 46.8 44.5 2.3 122 2 1908 2020 2011 2012 top-tenth 2013