1901-2000 Degrees Fahrenheit 1 46.1 45.2 0.9 75 55 1895 2018 1981 1976 normal 2 42.8 43.8 -1.0 49 81 1978 1950 1981 1976 normal 1961,1965,1987 3 41.8 43.7 -1.9 29 100 1977,1978 1932 1981 1980 bottom-third 4 44.4 45.5 -1.1 37 92 1977 1932 1981 1980 bottom-third 1942,1980 5 47.2 48.6 -1.4 24 105 1977 1932 1981 1980 bottom-third 1915 6 50.9 52.5 -1.6 19 110 1977 1932 1978 1981 bottom-third 1936 7 54.4 56.0 -1.6 17 112 1977 2017 1978 1981 bottom-third 8 57.5 58.7 -1.2 18 111 1977 2017 1980 1981 bottom-third 1966 9 59.8 60.6 -0.8 28 101 1977 2017 1980 1981 bottom-third 10 60.3 61.3 -1.0 23 106 1977 2017 1980 1981 bottom-third 1966 11 60.7 61.2 -0.5 32 97 1977 2017 1981 1981 bottom-third 1929,1981 12 59.7 60.5 -0.8 24 105 1977 2017 1980 1981 bottom-third 1948,1985,1993 18 56.9 57.8 -0.9 19 109 1978 2017 1981 1981 bottom-third 1961,1981 24 59.8 60.5 -0.7 23 105 1978 2017 1981 1976 bottom-third 1961,1994 36 59.6 60.5 -0.9 12 115 1970 2018 1981 1981 bottom-tenth 1904,1966,1980,1981 48 59.7 60.5 -0.8 17 109 1970 2019 1981 1977 bottom-third 1961,1977,1984,1985 60 59.6 60.5 -0.9 14 111 1970 2020 1981 1978 bottom-third 1906,1963,1977,1984