1991-2020 Degrees Fahrenheit 1 63.8 59.7 4.1 81 7 1939 2016 1953 1954 top-tenth 2 59.2 58.1 1.1 71 15 1949 2014,2015 1953 1954 top-third 2009 3 56.7 57.2 -0.5 49 37 1949 2015 1953 1943 normal 4 58.5 59.1 -0.6 55 30 1949 2018 1953 1951 normal 1992,1995,2013 5 61.6 62.7 -1.1 46 38 1949 2018 1953 1951 normal 1935,1984,1988,1995,2007 6 65.8 67.0 -1.2 43 41 1949 2018 1953 1951 normal 1943,1990 7 69.6 70.9 -1.3 43 41 1942 2018 1953 1951 normal 1990 8 72.6 73.9 -1.3 40 44 1942 2021 1953 1951 normal 2005 9 74.3 75.8 -1.5 38 46 1942 2018,2021 1953 1941 normal 1967,2001 10 74.2 76.4 -2.2 22 61 1942 2021 1952 1953 bottom-third 1943,1962,1964 11 73.8 76.1 -2.3 23 59 1942 2021 1953 1953 bottom-third 1953,1960,1964 12 73.0 75.2 -2.2 26 56 1942 2018 1953 1951 bottom-third 1984 18 70.4 72.5 -2.1 23 57 1945 2018 1953 1951 bottom-third 1944,1961,1962,1968 24 72.7 75.2 -2.5 16 62 1943,1966 2018 1953 1952 bottom-third 1969,1985 36 72.5 75.2 -2.7 8 68 1944,1966 2018 1945 1953 bottom-tenth 1972,1977,1985 48 72.7 75.2 -2.5 13 61 1945 2018 1953 1953 bottom-third 1953,1955 60 72.8 75.1 -2.3 15 57 1976 2018 1953 1954 bottom-third 1955,1979