1901-2000 Degrees Fahrenheit 1 46.1 51.3 -5.2 9 121 2018 2010 1907 1917 bottom-tenth 2 46.0 45.2 0.8 75 55 1960 2012 1917 1910 normal 3 40.0 39.5 0.5 76 54 1899 2012 1917 1915 normal 1903,1963,1995 4 32.5 35.6 -3.1 13 117 1912 2012 1912 1917 bottom-tenth 5 29.9 34.2 -4.3 9 120 1978 2012 1912 1917 bottom-tenth 6 31.8 35.2 -3.4 9 120 1904,1912,1978 2012 1912 1917 bottom-tenth 7 33.7 37.9 -4.2 7 122 1912 2012 1912 1917 bottom-tenth 1936 8 37.5 41.5 -4.0 4 125 1904,1978 2017 1912 1917 bottom-tenth 9 41.3 45.0 -3.7 3 126 1978 2017 1912 1917 bottom-tenth 1912 10 44.8 48.1 -3.3 3 126 1904 2012 1912 1917 bottom-tenth 1912 11 46.9 50.3 -3.4 2 127 1904 2017 1904 1917 bottom-tenth 12 47.7 51.3 -3.6 1 128 1918 2017 1918 1917 lowest 18 42.9 45.9 -3.0 3 125 1979 2017 1905 1917 bottom-tenth 24 49.0 51.2 -2.2 4 124 1905 2017 1905 1917 bottom-tenth 36 49.3 51.2 -1.9 2 125 1979 2018 1906 1917 bottom-tenth 1905,1906 48 50.1 51.2 -1.1 7 119 1980 1935 1907 1917 bottom-tenth 1970,1978 60 50.7 51.2 -0.5 20 105 1906,1979 1935 1912 1917 bottom-third 1903,1909,1912,1919,1929,1969,1973