1901-2000 Degrees Fahrenheit 1 73.8 74.4 -0.6 42 87 1965 2021 1948 1946 bottom-third 1942,1971,1997 2 69.0 69.8 -0.8 43 86 1965 2006 1945 1948 bottom-third 1912 3 65.6 65.4 0.2 57 72 1975 2000 1945 1948 normal 1938 4 61.3 61.4 -0.1 55 74 1965 1989 1948 1947 normal 1921,1930,1937 5 56.8 58.1 -1.3 26 103 1933,1975 2017 1948 1947 bottom-third 6 52.7 55.2 -2.5 9 120 1933 2018 1944 1948 bottom-tenth 7 51.0 53.2 -2.2 7 121 1933 2018 1944 1948 bottom-tenth 1937 8 50.2 52.7 -2.5 4 124 1933 2018 1933 1948 bottom-tenth 9 51.5 53.6 -2.1 5 123 1917 2018 1933 1948 bottom-tenth 10 53.7 55.5 -1.8 6 122 1913,1917 2018 1933 1948 bottom-tenth 11 55.9 57.5 -1.6 6 122 1917 2018 1942 1948 bottom-tenth 1942 12 57.9 59.4 -1.5 7 121 1913 2018 1942 1948 bottom-tenth 1912 18 56.6 58.0 -1.4 5 123 1913 2018 1945 1948 bottom-tenth 1917,1942 24 58.2 59.4 -1.2 5 122 1913 2018 1933 1948 bottom-tenth 1917 36 58.6 59.3 -0.7 11 115 1914 2018 1933 1948 bottom-tenth 1924 48 58.8 59.3 -0.5 16 109 1915 2018 1933 1948 bottom-third 1918,1921,1925,1926,1967 60 58.8 59.3 -0.5 13 111 1917 2018 1948 1948 bottom-third 1914,1922,1925,1926,1948,1973,1976