1901-2000 Degrees Fahrenheit 1 57.4 52.6 4.8 124 5 1917 2015 1917 1911 top-tenth 2 49.1 46.7 2.4 114 15 1917 2010 1917 1896 top-third 1959,1960,1987,2011 3 41.7 40.7 1.0 84 45 1926 2010 1917 1910 normal 1922,1938,1959 4 34.7 35.2 -0.5 46 83 1926 2012 1917 1915 normal 1965,1996 5 29.2 31.6 -2.4 14 115 1907,1923 2012 1917 1916 bottom-third 1900,1994,2015 6 25.9 29.9 -4.0 3 125 1907 2012 1907 1917 bottom-tenth 1905 7 26.3 30.5 -4.2 3 125 1905 2012 1907 1917 bottom-tenth 8 28.3 32.4 -4.1 2 126 1905 2012 1905 1917 bottom-tenth 9 31.1 35.1 -4.0 2 126 1905 2012 1905 1917 bottom-tenth 10 34.6 38.0 -3.4 2 126 1905 2012 1905 1917 bottom-tenth 11 37.6 40.6 -3.0 2 126 1905 2012 1905 1917 bottom-tenth 1904 12 39.5 42.4 -2.9 3 125 1905 2012 1905 1917 bottom-tenth 18 35.1 38.2 -3.1 2 125 1905 2013,2017 1905 1917 bottom-tenth 24 39.9 42.3 -2.4 2 125 1905 2013 1905 1917 bottom-tenth 36 40.4 42.3 -1.9 4 122 1906 2018 1907 1917 bottom-tenth 48 40.8 42.3 -1.5 4 121 1907 2013 1908 1917 bottom-tenth 1905,1920 60 41.0 42.3 -1.3 6 118 1908 2013,2020 1909 1917 bottom-tenth 1927