1901-2000 Degrees Fahrenheit 1 25.9 36.2 -10.3 3 126 1989 2015 1917 1916 bottom-tenth 2 34.5 40.8 -6.3 1 128 1917 2015 1917 1916 lowest 3 39.7 46.2 -6.5 1 128 1917 1931 1917 1916 lowest 4 46.4 51.8 -5.4 2 127 1976 1931 1917 1916 bottom-tenth 5 51.8 56.4 -4.6 2 127 1976 1931 1917 1916 bottom-tenth 6 55.6 59.7 -4.1 2 127 1976 1931 1917 1916 bottom-tenth 7 57.7 61.5 -3.8 2 127 1976 1931 1917 1916 bottom-tenth 8 57.7 61.9 -4.2 2 127 1976 1931 1917 1916 bottom-tenth 9 57.4 61.1 -3.7 2 127 1976 1931 1917 1916 bottom-tenth 10 56.2 59.6 -3.4 1 128 1917 1921 1917 1916 lowest 11 54.1 57.5 -3.4 1 128 1917 1921 1917 1916 lowest 12 52.6 55.5 -2.9 1 128 1917 1921 1917 1916 lowest 18 54.9 56.9 -2.0 2 126 1977 2016 1917 1916 bottom-tenth 24 54.0 55.5 -1.5 3 125 1979 1922 1917 1916 bottom-tenth 1980 36 54.4 55.5 -1.1 11 116 1978,1980 2018 1917 1916 bottom-tenth 48 54.7 55.5 -0.8 15 111 1979 2019 1904 1916 bottom-third 1904,1918,1966 60 55.1 55.5 -0.4 29 96 1980 2020 1907 1916 bottom-third 1904,1919,1973,1976,1977