1901-2000 Degrees Fahrenheit 1 58.6 60.7 -2.1 29 100 1977 2001 1898 1897 bottom-third 2019 2 57.8 57.4 0.4 68 61 1967 1992 1896 1897 normal 1925,1988 3 53.8 54.5 -0.7 47 82 1917 1934 1896 1897 normal 1976 4 52.1 52.2 -0.1 56 73 1917 1934 1897 1895 normal 5 49.2 50.2 -1.0 25 104 1917 2015 1898 1897 bottom-third 1918,1962 6 47.9 49.1 -1.2 19 109 1917 2015 1898 1897 bottom-third 1911,1944 7 48.0 49.1 -1.1 20 108 1917 2015 1898 1897 bottom-third 8 49.1 50.4 -1.3 17 111 1917 2015 1898 1897 bottom-third 1952 9 51.1 52.4 -1.3 14 114 1917 2015 1898 1897 bottom-third 1937,1942,1948 10 53.4 54.6 -1.2 16 112 1917 2015 1898 1897 bottom-third 11 55.3 56.4 -1.1 13 115 1917 2015 1898 1897 bottom-tenth 1920 12 56.4 57.4 -1.0 16 112 1917 2015 1898 1897 bottom-third 1945,1964 18 53.8 54.6 -0.8 16 111 1917 2015 1898 1897 bottom-third 1904,1908,1976 24 56.8 57.4 -0.6 23 104 1913,1917 2015 1898 1897 bottom-third 1902,1948,1965 36 56.7 57.4 -0.7 18 108 1913,1917 2016 1898 1898 bottom-third 1908,1957 48 -99 57.4 -99 -99 -99 1913 2016,2017,2018 normal 60 -99 57.3 -99 -99 -99 1913,1917 2018 normal