1901-2000 Degrees Fahrenheit 1 18.4 16.4 2.0 82 48 1936 1998 2003 2005 normal 1898 2 23.1 14.4 8.7 123 7 1912 1998 2005 2002 top-tenth 3 21.5 15.7 5.8 118 11 1904 2002 2005 2002 top-tenth 4 24.7 19.7 5.0 116 13 1904 2002 2005 2002 top-tenth 5 29.7 25.1 4.6 120 9 1977 2002 2005 2002 top-tenth 1931,1983,2000 6 35.3 30.6 4.7 121 8 1977 2002 2005 2002 top-tenth 7 40.0 35.7 4.3 122 7 1904 2002 2005 2002 top-tenth 8 43.8 39.9 3.9 122 7 1904 2002 2005 2002 top-tenth 9 46.7 42.6 4.1 123 6 1904 2002 2005 2002 top-tenth 10 47.3 43.8 3.5 122 7 1918 2002 2005 2002 top-tenth 11 47.3 43.7 3.6 123 6 1918 2002 2005 2002 top-tenth 12 45.7 42.4 3.3 122 7 1918 2017 2005 2002 top-tenth 18 42.0 38.4 3.6 122 6 1918 2017 2005 2000 top-tenth 24 44.9 42.4 2.5 118 10 1918 2017 2005 2002 top-tenth 2023 36 44.4 42.3 2.1 116 11 1918 2013 2005 2002 top-tenth 1989,2019 48 44.0 42.3 1.7 110 16 1918 2002 1999 2005 top-third 1934 60 44.5 42.3 2.2 122 3 1920 2002 2005 2003 top-tenth 2008,2020