1901-2000 Degrees Fahrenheit 1 31.7 38.6 -6.9 1 128 1897 1992 1897 1896 lowest 2 32.1 35.8 -3.7 11 118 1936 2015 1897 1896 bottom-tenth 1903,1923 3 30.7 33.3 -2.6 19 110 1950 2015 1897 1896 bottom-third 1933 4 31.6 32.7 -1.1 32 96 1949 2015 1897 1896 bottom-third 1972 5 31.1 33.5 -2.4 17 111 1949 1934 1897 1896 bottom-third 1913,1952 6 33.8 35.8 -2.0 19 109 1949 2015 1897 1896 bottom-third 1923 7 36.7 38.8 -2.1 15 113 1949 2015 1897 1896 bottom-third 1899,1920,1986 8 39.9 41.9 -2.0 13 115 1949 2015 1897 1896 bottom-tenth 1937,1986 9 42.9 44.3 -1.4 17 111 1949 2015 1897 1896 bottom-third 1904,1932 10 44.4 45.7 -1.3 19 109 1949 2015 1897 1896 bottom-third 1932 11 44.7 46.2 -1.5 12 116 1917 2015 1897 1896 bottom-tenth 1910 12 44.5 46.1 -1.6 9 119 1949,1956 2015 1897 1896 bottom-tenth 1969 18 41.7 42.7 -1.0 20 107 1917 2016 1897 1897 bottom-third 24 45.0 46.1 -1.1 14 113 1950,1956 2016 1897 1897 bottom-third 1937,1985 36 -99 46.1 -99 -99 -99 1957 2016 normal 48 -99 46.1 -99 -99 -99 1952 2018 normal 60 -99 46.1 -99 -99 -99 1913,1952 2018,2019 normal