1991-2020 Degrees Fahrenheit 1 82.4 84.1 -1.7 29 72 1992 2011 1972 1970 bottom-third 2 82.2 84.4 -2.2 15 86 1950 2011 1972 1971 bottom-third 3 80.1 83.0 -2.9 6 95 2004 2011 1950 1972 bottom-tenth 4 76.9 80.3 -3.4 2 99 1992 2011 1973 1972 bottom-tenth 1976 5 72.9 76.8 -3.9 1 100 1973 2011 1973 1972 lowest 6 70.3 73.1 -2.8 3 98 1931 2011 1931 1972 bottom-tenth 7 66.5 69.3 -2.8 1 99 1931,1973,1975,1982,1989,2021 2011 1931 1972 lowest 1931,1975,1982,1989,2021 8 62.8 65.9 -3.1 3 97 1979 2011 1973 1972 bottom-tenth 9 60.1 63.4 -3.3 2 98 1979 2011 1973 1972 bottom-tenth 10 58.6 62.4 -3.8 1 98 1973 2011 1973 1972 lowest 11 59.0 62.6 -3.6 1 98 1973 2011 1973 1972 lowest 12 60.4 63.7 -3.3 1 98 1973 2011 1973 1972 lowest 18 64.5 66.8 -2.3 2 97 1977 2012 1973 1972 bottom-tenth 24 61.8 63.7 -1.9 3 95 1979 2012 1973 1972 bottom-tenth 1983 36 62.0 63.7 -1.7 7 90 1979 2013 1970 1972 bottom-tenth 1978,1984 48 61.9 63.7 -1.8 3 93 1979 2018 1973 1972 bottom-tenth 1980 60 62.0 63.6 -1.6 2 93 1979 2012 1962 1972 bottom-tenth 1962,1977