1991-2020 Degrees Fahrenheit 1 51.5 52.5 -1.0 41 84 1905 2015 1972 1967 bottom-third 2 58.2 59.2 -1.0 60 64 1895 1963 1972 1967 normal 1982 3 63.8 64.5 -0.7 75 49 1912 2022 1972 1967 normal 1993,2009 4 67.2 67.4 -0.2 92 32 1912 2022 1972 1967 top-third 2005,2011 5 67.3 67.2 0.1 90 34 1912 2021 1972 1967 top-third 6 66.3 66.0 0.3 96 28 1916 2015 1972 1967 top-third 1944,2001,2020 7 64.1 63.9 0.2 90 34 1916 2021 1972 1967 top-third 1963 8 61.8 61.6 0.2 93 31 1912 2015 1972 1967 top-third 1963,1986,2020 9 59.3 59.1 0.2 93 31 1913 2015 1972 1967 top-third 1986,2006 10 56.6 56.8 -0.2 89 35 1916 2015 1972 1967 top-third 1953 11 54.1 54.8 -0.7 73 49 1916 2015 1972 1970 normal 1935,1944,1970,1977,1999 12 53.1 53.7 -0.6 78 44 1916 2015 1972 1968 normal 1924,1931,1944,1951,1977,2002,2017 18 57.0 57.8 -0.8 65 55 1917 2015 1972 1970 normal 1924,1931,1951 24 52.7 53.8 -1.1 49 70 1917 2016 1972 1971 normal 1948,1954,1962,1964 36 52.7 53.8 -1.1 50 67 1913,1917 2016 1972 1972 normal 1906,1946,1954,1961,1966,1972,1977,1981 48 52.8 53.8 -1.0 54 61 1913 2016 1972 1970 normal 1938,1954,1975,1978,1982 60 52.5 53.8 -1.3 36 77 1913,1920 2016 1964 1972 bottom-third 1925,1929,1945,1954,1964,1979,1986