1901-2000 Degrees Fahrenheit 1 41.7 49.5 -7.8 1 128 1976 1985 1976 1975 lowest 2 48.2 55.0 -6.8 1 128 1976 1919 1976 1975 lowest 3 54.7 60.5 -5.8 1 128 1976 1931 1976 1975 lowest 4 59.6 64.7 -5.1 1 128 1976 2016 1976 1975 lowest 5 62.8 67.3 -4.5 1 128 1976 2016 1976 1975 lowest 6 64.4 68.5 -4.1 1 128 1976 2016 1976 1975 lowest 7 64.1 68.4 -4.3 1 128 1976 2016 1976 1975 lowest 8 63.5 67.3 -3.8 1 128 1976 2016 1976 1975 lowest 9 62.6 65.4 -2.8 1 128 1976 2016 1976 1975 lowest 10 61.2 63.2 -2.0 2 127 1967 2016 1967 1975 bottom-tenth 11 58.8 61.0 -2.2 2 127 1940 1921 1940 1975 bottom-tenth 12 57.3 59.4 -2.1 2 126 1940 2016 1940 1975 bottom-tenth 18 60.7 62.5 -1.8 3 125 1968 2016 1968 1975 bottom-tenth 24 58.3 59.4 -1.1 10 117 1967,1970 2017 1970 1975 bottom-tenth 1982 36 58.6 59.4 -0.8 21 105 1969 2018 1971 1975 bottom-third 1942,1962 48 58.9 59.4 -0.5 25 100 1969,1970 2019 1972 1975 bottom-third 1985 60 59.0 59.4 -0.4 26 98 1970 2020 1974 1975 bottom-third 1974