1901-2000 Degrees Fahrenheit 1 44.0 46.8 -2.8 32 98 1895 2018 1973 1976 bottom-third 2 38.8 45.7 -6.9 2 128 1978 1932 1977 1976 bottom-tenth 3 40.1 45.7 -5.6 1 128 1977 1932 1977 1976 lowest 4 41.9 47.6 -5.7 1 128 1977 1932 1977 1976 lowest 5 45.1 50.7 -5.6 1 128 1977 1932 1977 1976 lowest 6 49.5 54.6 -5.1 1 128 1977 1932 1977 1976 lowest 7 53.3 58.0 -4.7 1 128 1977 1932 1977 1976 lowest 8 56.5 60.7 -4.2 1 128 1977 1932 1977 1976 lowest 9 58.4 62.5 -4.1 1 128 1977 1932,2017 1977 1976 lowest 10 59.3 63.3 -4.0 1 128 1977 2017 1977 1976 lowest 11 59.6 63.2 -3.6 1 128 1977 2017 1977 1976 lowest 12 59.5 62.4 -2.9 1 128 1977 2017 1977 1976 lowest 18 58.2 59.8 -1.6 7 121 1905 2017 1970 1976 bottom-tenth 1918 24 61.1 62.4 -1.3 7 121 1905,1968 2017 1970 1976 bottom-tenth 1918 36 61.6 62.4 -0.8 13 114 1970 2018 1971 1976 bottom-tenth 1918,1919,1966,1967 48 62.2 62.4 -0.2 33 93 1970 2019,2020 1973 1976 bottom-third 1903,1915,1941 60 62.0 62.4 -0.4 27 98 1970 2020 1973 1976 bottom-third 1907