1991-2020 Degrees Fahrenheit 1 67.2 70.8 -3.6 24 104 1927 1995 1917 1919 bottom-third 2 66.9 71.4 -4.5 6 122 1927 1955 1915 1919 bottom-tenth 3 65.6 70.1 -4.5 7 121 1929 1995 1917 1919 bottom-tenth 1903,1930 4 62.4 67.0 -4.6 7 120 1915 2012 1917 1919 bottom-tenth 5 58.0 63.0 -5.0 5 121 1917 2010 1917 1919 bottom-tenth 6 53.9 58.5 -4.6 6 118 1917,1924 2012 1917 1919 bottom-tenth 1915,1934,1950 7 49.3 54.1 -4.8 7 117 1917 2012 1917 1919 bottom-tenth 8 45.3 50.6 -5.3 4 118 1904,1917 2012 1917 1919 bottom-tenth 9 42.8 48.6 -5.8 3 119 1904 2012 1917 1919 bottom-tenth 10 42.3 47.8 -5.5 2 120 1904 2012 1904 1919 bottom-tenth 11 43.4 48.2 -4.8 4 118 1904 2012 1918 1919 bottom-tenth 12 45.0 49.4 -4.4 4 118 1904 2012 1918 1919 bottom-tenth 18 49.3 52.4 -3.1 13 105 1918 2012 1918 1919 bottom-third 1951 24 47.2 49.4 -2.2 26 90 1918 2017 1919 1916 bottom-third 1916,1944,1982 36 46.4 49.4 -3.0 10 102 1918 2012 1919 1909 bottom-tenth 1904 48 45.9 49.4 -3.5 1 107 1918,1920 2013 1918 1919 lowest 1918 60 46.2 49.4 -3.2 2 103 1927 2002 1920 1919 bottom-tenth