1901-2000 Degrees Fahrenheit 1 50.3 54.0 -3.7 11 119 1967 1989 1912 1921 bottom-tenth 2 47.6 51.4 -3.8 5 125 1967 1934 1917 1921 bottom-tenth 3 45.4 49.4 -4.0 1 129 1922 2015 1922 1921 lowest 4 43.5 47.6 -4.1 1 129 1922 2015 1922 1921 lowest 5 43.8 46.7 -2.9 5 124 1917,1949 2015 1917 1921 bottom-tenth 1955 6 44.9 47.2 -2.3 5 124 1917 2015 1917 1921 bottom-tenth 7 47.2 48.9 -1.7 10 119 1917 2015 1917 1921 bottom-tenth 1912,1932,1933 8 49.7 51.4 -1.7 11 118 1917 2015 1917 1921 bottom-tenth 9 52.2 53.9 -1.7 8 121 1917 2015 1917 1921 bottom-tenth 1929 10 54.6 56.0 -1.4 9 120 1917 2015 1917 1921 bottom-tenth 1948 11 55.9 57.1 -1.2 9 120 1917 2015 1921 1921 bottom-tenth 1921,1942,1973 12 56.0 57.4 -1.4 6 123 1917 2015 1917 1921 bottom-tenth 18 52.9 54.0 -1.1 9 119 1949 2015 1921 1921 bottom-tenth 1904,1921 24 56.1 57.4 -1.3 5 123 1913 2015 1918 1921 bottom-tenth 1950 36 56.3 57.4 -1.1 5 122 1913,1917 2016 1919 1921 bottom-tenth 1910,1912,1918,1949,1950 48 56.3 57.4 -1.1 3 123 1913 2018 1920 1921 bottom-tenth 1912,1915,1919 60 56.6 57.3 -0.7 14 111 1913 2018 1921 1918 bottom-third 1911