1901-2000 Degrees Fahrenheit 1 51.2 51.8 -0.6 44 85 1917 1934 1898 1897 normal 1910 2 47.3 47.2 0.1 53 76 1917 1934 1898 1897 normal 1955,2015,2016 3 41.9 42.7 -0.8 36 93 1917 2012 1898 1897 bottom-third 1942,2008 4 35.6 38.9 -3.3 4 125 1917 1934 1899 1898 bottom-tenth 5 32.7 35.8 -3.1 4 125 1917 1934 1899 1898 bottom-tenth 6 30.2 34.1 -3.9 2 126 1917 1934 1899 1898 bottom-tenth 7 30.1 34.0 -3.9 2 126 1917 1934 1899 1898 bottom-tenth 8 31.7 35.6 -3.9 2 126 1917 1934 1899 1898 bottom-tenth 9 34.4 38.0 -3.6 2 126 1917 1934 1899 1898 bottom-tenth 10 37.6 40.7 -3.1 2 126 1917 1934 1899 1898 bottom-tenth 11 40.2 43.1 -2.9 2 126 1917 1934 1899 1898 bottom-tenth 12 42.0 44.6 -2.6 2 126 1917 1934 1899 1898 bottom-tenth 18 38.7 41.1 -2.4 2 125 1913 2018 1899 1898 bottom-tenth 24 42.9 44.6 -1.7 3 124 1913 2018 1899 1898 bottom-tenth 1914,1930 36 43.3 44.6 -1.3 6 120 1914 2018 1899 1898 bottom-tenth 1918 48 43.4 44.6 -1.2 5 120 1915 2018 1899 1899 bottom-tenth 1916,1918 60 -99 44.5 -99 -99 -99 1917 2018 normal