1901-2000 Degrees Fahrenheit 1 0.9 6.5 -5.6 25 105 1912 2006 1918 1919 bottom-third 2 2.8 9.8 -7.0 5 124 1918 2012 1918 1919 bottom-tenth 3 8.6 15.8 -7.2 3 126 1977 2002 1912 1919 bottom-tenth 4 15.9 23.1 -7.2 1 128 1920 2002 1920 1919 lowest 5 24.5 29.8 -5.3 2 127 1912 2016 1912 1919 bottom-tenth 1977 6 31.3 35.9 -4.6 3 126 1912 2002 1918 1919 bottom-tenth 7 36.9 40.6 -3.7 4 125 1912 2002 1918 1919 bottom-tenth 8 40.6 43.5 -2.9 6 123 1918 2002 1918 1919 bottom-tenth 9 42.2 44.7 -2.5 7 122 1918 2002 1918 1919 bottom-tenth 1930,1936,1952 10 42.1 44.4 -2.3 11 118 1918 2002 1918 1919 bottom-tenth 1928 11 40.4 42.6 -2.2 8 121 1918 2017 1918 1919 bottom-tenth 1897,1927 12 38.0 40.1 -2.1 11 118 1918 2017 1918 1919 bottom-tenth 18 38.2 38.7 -0.5 39 89 1918 2017 1919 1916 bottom-third 24 39.8 40.0 -0.2 48 80 1918 2000,2017 1919 1915 normal 1970,2010 36 38.4 40.0 -1.6 6 121 1918 2001,2018 1919 1917 bottom-tenth 48 38.1 40.0 -1.9 2 124 1918 2002 1918 1919 bottom-tenth 60 38.4 40.0 -1.6 1 124 1920 2002,2003 1920 1919 lowest