1925-2000 Degrees Fahrenheit 1 50.0 49.2 0.8 58 41 1949 2004 1985 1984 normal 2002,2018 2 43.5 43.5 0.0 41 58 1949 2004 1985 1983 normal 3 34.6 36.8 -2.2 12 87 1949 2016 1985 1984 bottom-third 4 28.0 30.3 -2.3 13 86 1972 2019 1985 1984 bottom-third 1961 5 24.5 25.2 -0.7 32 67 1972 2019 1985 1983 bottom-third 1936 6 21.4 21.3 0.1 44 55 1971 2016 1985 1983 normal 2020 7 20.8 18.8 2.0 68 30 1971 2016 1985 1983 top-third 1983 8 19.3 17.9 1.4 63 35 1972 2016 1985 1983 normal 1953,1970 9 19.5 18.8 0.7 55 43 1971 2016 1985 1983 normal 1983 10 21.5 21.0 0.5 52 46 1971 2019 1985 1983 normal 1950,1995,2000,2006 11 24.0 23.6 0.4 44 54 1971 2019 1985 1983 normal 1927,1938,1990 12 26.4 26.0 0.4 43 55 1971 2019 1985 1983 normal 1938,1950,1968 18 24.7 24.4 0.3 42 56 1972 2016 1985 1982 normal 1937,1991,1997 24 26.1 26.0 0.1 38 59 1972 2019 1985 1984 normal 1969,1984,1990 36 25.9 26.0 -0.1 32 64 1973 2016 1984 1985 bottom-third 1932,1963 48 26.1 25.9 0.2 37 58 1974 2019 1985 1984 normal 1961 60 25.9 25.9 0.0 36 58 1975 2019 1978 1985 normal 1938,1961