1991-2020 Degrees Fahrenheit 1 91.1 91.2 -0.1 56 30 1965 2021 1984 1981 normal 2 87.0 86.5 0.5 67 18 1965 2006,2021,2022 1984 1940 top-third 2009 3 82.6 81.9 0.7 67 17 1965 2021 1984 1985 top-third 4 77.3 77.9 -0.6 51 33 1965 2017 1984 1984 normal 1966,1984 5 73.1 74.3 -1.2 46 38 1965 2017 1983 1984 normal 6 69.7 71.3 -1.6 39 44 1944 2014 1983 1984 normal 1978,2019 7 67.3 69.0 -1.7 33 50 1944 2018 1983 1984 normal 1976 8 66.4 68.5 -2.1 23 59 1944,1965 2018 1983 1984 bottom-third 1938,1960,1991 9 66.8 69.5 -2.7 20 61 1944 2018 1983 1984 bottom-third 1955 10 68.8 71.4 -2.6 20 61 1942 2018 1983 1984 bottom-third 11 70.7 73.4 -2.7 18 63 1942 2018 1983 1984 bottom-third 1953 12 72.4 75.2 -2.8 14 67 1942 2021 1983 1984 bottom-third 1939,1962 18 71.8 73.9 -2.1 29 50 1965 2018 1983 1984 normal 1954,1970 24 73.3 75.2 -1.9 31 46 1942,1965 2018 1984 1982 normal 1955,1961,1979,1986 36 72.8 75.2 -2.4 16 59 1944 2018,2022 1977 1984 bottom-third 1964,1969,1972 48 72.9 75.2 -2.3 17 56 1944 2018 1978 1984 bottom-third 1969,1971 60 73.4 75.1 -1.7 27 44 1975 2018 1983 1984 normal 1959,1960,1962,1981