1901-2000 Degrees Fahrenheit 1 22.0 18.1 3.9 95 35 1912 2006 1948 1949 top-third 2 23.8 20.8 3.0 98 31 1918 2002 1948 1949 top-third 1999 3 26.9 25.3 1.6 86 43 1977 2002 1948 1949 top-third 2004 4 33.1 30.9 2.2 100 29 1918 1932 1948 1949 top-third 5 37.5 36.4 1.1 88 41 1918 1932 1948 1949 top-third 1987,1988,1989,1991 6 42.6 41.3 1.3 93 36 1918 1932 1946 1949 top-third 1909,1931,1998,2004,2018 7 46.6 45.1 1.5 102 27 1918 1932 1948 1949 top-third 1901,1947,1964 8 49.2 47.4 1.8 107 22 1918 1932 1948 1949 top-third 9 49.9 48.1 1.8 106 23 1918 1932 1949 1942 top-third 10 49.2 47.5 1.7 106 23 1918 1932 1949 1949 top-third 1949 11 47.4 45.8 1.6 102 27 1918 2013 1949 1947 top-third 12 45.3 43.5 1.8 104 25 1918 2013 1949 1942 top-third 18 44.8 42.8 2.0 107 21 1918 2013,2017 1949 1933 top-third 24 45.0 43.5 1.5 102 26 1918 2013 1949 1933 top-third 36 44.3 43.5 0.8 90 37 1918 2013 1949 1934 top-third 1976,1987,1991 48 44.5 43.5 1.0 93 33 1918 2002 1949 1935 top-third 1933,1957,1999 60 44.3 43.5 0.8 88 37 1908 2003 1949 1943 top-third 1943,1995