1991-2020 Degrees Fahrenheit 1 50.3 53.2 -2.9 29 95 1919 1950 1949 1950 bottom-third 2 57.2 60.2 -3.0 37 87 1912 2015 1949 1950 bottom-third 1904,1996 3 62.1 65.5 -3.4 29 95 1912 2015 1949 1950 bottom-third 1914,1949,1986 4 65.9 69.0 -3.1 41 83 1912 2003 1949 1950 bottom-third 5 65.9 69.8 -3.9 27 97 1912 2018 1949 1950 bottom-third 1929 6 64.9 68.5 -3.6 28 96 1912 2018 1949 1950 bottom-third 1902,1928,1968 7 62.7 66.1 -3.4 32 92 1912 2018 1949 1950 bottom-third 1925,1930,1944 8 59.8 63.5 -3.7 33 91 1912 2012 1949 1950 bottom-third 1922,1928,1930,1942 9 56.3 60.3 -4.0 26 98 1917 2012,2018 1949 1950 bottom-third 1902,1922,1930,1945 10 53.0 57.1 -4.1 32 92 1917 2012,2018 1949 1950 bottom-third 1918,1919,1922,1944 11 51.2 54.4 -3.2 47 76 1917 2018 1950 1947 normal 1911,1921,1922 12 50.2 53.2 -3.0 53 70 1917 2018 1949 1950 normal 1969 18 55.3 58.3 -3.0 50 73 1917 2018 1950 1945 normal 1965 24 50.3 53.2 -2.9 54 68 1913,1917 2018 1950 1944 normal 1902,1938 36 49.2 53.2 -4.0 26 95 1917 2018 1950 1948 bottom-third 48 49.1 53.1 -4.0 21 99 1920 2018 1950 1950 bottom-third 1926,1950,1976 60 49.3 53.1 -3.8 27 92 1917 2018,2019,2021 1950 1950 bottom-third 1908,1910,1926,1928,1950