1901-2000 Degrees Fahrenheit 1 32.1 30.5 1.6 81 49 1977 1950 1988 1991 normal 2 34.6 31.9 2.7 89 40 1918 1932 1990 1991 top-third 3 36.8 35.3 1.5 85 44 1977 1932 1990 1991 normal 1965 4 41.2 39.8 1.4 89 40 1977 1932 1990 1991 top-third 1941,1986,1998,2000 5 45.8 44.7 1.1 89 40 1977 1932 1990 1991 top-third 1986 6 50.1 49.0 1.1 95 34 1977 1932 1990 1991 top-third 1939 7 53.5 52.3 1.2 99 30 1977 1932 1990 1991 top-third 1934,1995 8 55.5 54.3 1.2 100 29 1977 1932 1990 1991 top-third 1934,1960,2005 9 56.8 54.9 1.9 116 13 1977 1932 1991 1950 top-tenth 2006 10 56.6 54.5 2.1 121 8 1977 1932 1991 1950 top-tenth 1907,1999 11 55.4 53.3 2.1 120 9 1918 2017 1991 1937 top-tenth 1937 12 53.8 51.6 2.2 120 9 1918 2017 1991 1950 top-tenth 18 52.9 50.7 2.2 120 8 1918 2017 1991 1950 top-tenth 24 53.6 51.6 2.0 121 7 1918 2013,2020 1991 1950 top-tenth 1923 36 52.8 51.6 1.2 113 14 1970 2021 1991 1934 top-third 1924,1933,2001 48 52.5 51.6 0.9 107 19 1964,1970,1982 2020 1991 1952 top-third 1901,1923,1933,1952,1993,2001,2003,2017 60 52.4 51.6 0.8 100 25 1981 2021 1991 1954 top-third 1901,1936,1954,1995,2010