1901-2000 Degrees Fahrenheit 1 51.9 53.6 -1.7 25 104 1965 1998 1945 1949 bottom-third 1959,2006 2 56.3 58.5 -2.2 9 120 1912 2022 1927 1949 bottom-tenth 3 57.9 60.7 -2.8 5 124 1912 2022 1915 1949 bottom-tenth 4 57.4 60.0 -2.6 7 122 1912,1915 2021 1915 1949 bottom-tenth 5 54.6 57.7 -3.1 4 125 1915 2012 1915 1949 bottom-tenth 6 51.7 54.5 -2.8 2 127 1912 2012 1912 1949 bottom-tenth 7 48.1 50.9 -2.8 4 125 1912 2012 1917 1949 bottom-tenth 8 45.4 47.3 -1.9 10 119 1912 2012 1929 1949 bottom-tenth 1920 9 41.9 44.1 -2.2 7 122 1917 2012 1929 1949 bottom-tenth 1965 10 39.7 41.8 -2.1 8 120 1917 1934,2012 1929 1949 bottom-tenth 1924,1965,1979 11 39.6 40.6 -1.0 27 101 1917 1934 1949 1948 bottom-third 1937,1964 12 39.5 40.8 -1.3 16 112 1917 1934 1949 1948 bottom-third 1913,1975 18 44.8 45.3 -0.5 36 92 1917 1934 1949 1948 bottom-third 1922,1923 24 39.3 40.8 -1.5 8 119 1913,1917 2016 1930 1949 bottom-tenth 1924 36 39.8 40.7 -0.9 13 113 1917 2017 1930 1949 bottom-tenth 1900,1912,1919,1975 48 40.0 40.7 -0.7 20 105 1899 2018 1932 1949 bottom-third 1909,1925,1932,1975 60 40.4 40.7 -0.3 39 85 1917 2016 1949 1949 bottom-third 1922,1949,1972