1901-2000 Degrees Fahrenheit 1 60.0 64.1 -4.1 2 127 1993 2021 1916 1915 bottom-tenth 2 58.1 60.9 -2.8 4 125 1901 2021 1901 1915 bottom-tenth 3 54.8 57.9 -3.1 1 128 1916 2015 1916 1915 lowest 4 52.3 54.7 -2.4 4 125 2011 2015 1901 1915 bottom-tenth 5 49.5 51.4 -1.9 6 123 1955 2015 1901 1915 bottom-tenth 1901,1976 6 46.4 48.4 -2.0 8 121 1955 2015 1913 1915 bottom-tenth 1913 7 42.1 45.5 -3.4 2 127 1950 2015 1916 1915 bottom-tenth 8 40.6 43.7 -3.1 3 125 1950 2015 1916 1915 bottom-tenth 1929 9 39.9 42.9 -3.0 2 126 1917 2015 1916 1915 bottom-tenth 10 40.7 43.3 -2.6 2 126 1917 2015 1916 1915 bottom-tenth 1949 11 42.1 44.6 -2.5 2 126 1917 2015 1916 1915 bottom-tenth 1949 12 44.2 46.1 -1.9 6 122 1917 2015 1913 1915 bottom-tenth 1913 18 46.2 46.9 -0.7 29 99 1917 2016 1913 1915 bottom-third 1960,1979 24 45.3 46.1 -0.8 21 106 1917 2016 1913 1915 bottom-third 1912,1920,1972 36 45.8 46.1 -0.3 34 92 1950 2016 1915 1915 bottom-third 1915,1932,1955,1974 48 45.4 46.1 -0.7 16 109 1952 2016 1914 1915 bottom-third 1904,1910,1914,1949 60 45.4 46.1 -0.7 10 114 1952 2018 1913 1915 bottom-tenth 1911,1912,1924,1956,1957