1925-2000 Degrees Fahrenheit 1 49.4 49.2 0.2 43 56 1949 2004 1970 1969 normal 1994 2 41.7 43.5 -1.8 8 91 1949 2004 1965 1970 bottom-tenth 1933,1962 3 33.9 36.8 -2.9 9 90 1949 2016 1964 1970 bottom-tenth 4 25.7 30.3 -4.6 2 97 1972 2019 1971 1970 bottom-tenth 5 20.3 25.2 -4.9 2 97 1972 2019 1971 1970 bottom-tenth 6 15.0 21.3 -6.3 1 98 1971 2016 1971 1970 lowest 7 13.0 18.8 -5.8 1 97 1971 2016 1971 1970 lowest 8 13.4 17.9 -4.5 2 96 1972 2016 1971 1970 bottom-tenth 9 14.0 18.8 -4.8 1 97 1971 2016 1971 1970 lowest 10 16.2 21.0 -4.8 1 97 1971 2019 1971 1970 lowest 11 19.1 23.6 -4.5 1 97 1971 2019 1971 1970 lowest 12 21.8 26.0 -4.2 1 97 1971 2019 1971 1970 lowest 18 21.8 24.4 -2.6 4 94 1972 2016 1956 1970 bottom-tenth 24 24.4 26.0 -1.6 11 86 1972 2019 1966 1970 bottom-third 1947,1949 36 24.9 26.0 -1.1 13 83 1973 2016 1967 1970 bottom-third 1935,1948 48 25.2 25.9 -0.7 21 74 1974 2019 1968 1970 bottom-third 1959 60 25.4 25.9 -0.5 27 67 1975 2019 1969 1970 bottom-third 1978