1901-2000 Degrees Fahrenheit 1 68.6 72.1 -3.5 4 125 1993 2021 1912 1911 bottom-tenth 1902 2 64.7 68.0 -3.3 5 124 1907 2021 1907 1912 bottom-tenth 3 61.7 63.7 -2.0 13 116 1907 2021 1912 1911 bottom-tenth 1905,2011 4 57.8 59.4 -1.6 17 112 1983 2021 1912 1911 bottom-third 1911,1917,1945 5 53.6 55.4 -1.8 17 112 1944 2007 1912 1911 bottom-third 6 49.8 51.9 -2.1 10 119 1903 1934 1903 1912 bottom-tenth 7 46.3 48.8 -2.5 9 120 1917 1934,2015 1903 1912 bottom-tenth 1964 8 44.2 46.6 -2.4 7 121 1917 1934 1913 1912 bottom-tenth 9 43.8 45.7 -1.9 11 117 1917 1934,2015 1903 1912 bottom-tenth 10 44.0 46.2 -2.2 6 122 1917 1934,2015 1913 1912 bottom-tenth 1932 11 45.1 47.6 -2.5 3 125 1917 2015 1913 1912 bottom-tenth 12 47.0 49.5 -2.5 3 125 1917 2015 1913 1912 bottom-tenth 18 48.0 50.3 -2.3 3 125 1949 2015 1913 1912 bottom-tenth 24 47.2 49.5 -2.3 1 126 1913 2016 1913 1912 lowest 36 47.9 49.5 -1.6 1 125 1913 2016,2017 1913 1912 lowest 48 48.2 49.5 -1.3 1 124 1913 2018 1913 1912 lowest 60 48.4 49.5 -1.1 2 122 1917 2018 1913 1912 bottom-tenth 1949