1901-2000 Degrees Fahrenheit 1 37.5 34.2 3.3 107 23 1916 2012 1994 1991 top-third 1925 2 31.0 29.6 1.4 82 48 2015 2012 1994 1991 normal 1910 3 31.2 27.8 3.4 111 19 1904 2012 1994 1991 top-third 2018 4 31.9 27.9 4.0 117 12 1904 2012 1994 1991 top-tenth 2022 5 34.3 30.1 4.2 119 10 1918 2012 1994 1991 top-tenth 1998 6 37.0 33.5 3.5 120 9 1918 2012 1994 1991 top-tenth 1949 7 40.2 37.3 2.9 113 16 1918 2012 1994 1991 top-third 8 43.6 41.1 2.5 111 18 1904,1905,1918 2012 1994 1991 top-third 9 46.9 44.3 2.6 113 16 1904,1905 2012 1994 1991 top-third 10 49.0 46.3 2.7 117 12 1904 2012 1994 1991 top-tenth 2013 11 49.5 47.1 2.4 114 15 1918 2012 1994 1991 top-third 1932 12 49.4 46.9 2.5 116 13 1918 2012 1994 1995 top-tenth 2018 18 43.5 42.4 1.1 93 35 1905 2023 1994 1992 top-third 1951,1958 24 48.0 46.9 1.1 94 34 1905 2023 1994 1992 top-third 1984 36 47.3 46.9 0.4 75 52 1906 2023 1994 1993 normal 1939,1958,1960,1962,1989 48 47.7 46.9 0.8 87 39 1907 2023 1994 1994 top-third 1950,1994 60 48.0 46.9 1.1 96 29 1908 2023 1994 1992 top-third 1956