1901-2000 Degrees Fahrenheit 1 45.3 46.0 -0.7 48 82 1943 2010 1992 1994 normal 1929 2 42.3 40.7 1.6 84 46 1916 1945,2012 1994 1991 normal 3 36.8 35.9 0.9 76 54 1916 2012 1994 1991 normal 1929,1974 4 35.7 33.3 2.4 108 22 1904 2012 1994 1991 top-third 1952 5 35.6 32.5 3.1 113 16 1904 2012 1994 1991 top-third 6 37.2 33.8 3.4 118 11 1904 2012 1994 1991 top-tenth 2000 7 39.1 36.2 2.9 115 14 1904,1918 2012 1994 1991 top-third 2008 8 41.9 39.4 2.5 109 20 1918 2012 1994 1991 top-third 2018 9 44.8 42.6 2.2 106 23 1904 2012 1994 1991 top-third 10 47.9 45.4 2.5 113 16 1904 2012 1994 1991 top-third 1949,2008,2010 11 49.8 47.3 2.5 117 12 1904 2012 1994 1991 top-tenth 2019 12 50.3 48.1 2.2 113 16 1904 2012 1994 1991 top-third 18 44.5 43.3 1.2 95 33 1905 2017 1994 1992 top-third 1996 24 49.2 48.0 1.2 97 31 1905 2017 1994 1992 top-third 1955,1996 36 48.6 48.0 0.6 80 47 1906 2023 1994 1993 normal 1934,1947,2005 48 48.9 48.0 0.9 89 37 1907 2023 1990 1994 top-third 1976,1997 60 49.3 48.0 1.3 100 25 1908 2023 1994 1992 top-third 1953,1954