1901-2000 Degrees Fahrenheit 1 32.0 26.4 5.6 117 13 1933 1934 1999 1995 top-tenth 2 28.9 24.2 4.7 119 11 1949 1934 1999 1995 top-tenth 1967,2016 3 27.9 24.1 3.8 116 13 1949 1934 1999 1995 top-tenth 1954 4 30.6 26.0 4.6 126 3 1949 1934 1999 1934 top-tenth 5 33.7 29.6 4.1 126 3 1949 1934 1999 1934 top-tenth 6 37.1 33.8 3.3 124 5 1949 1934 1999 1954 top-tenth 7 41.2 38.1 3.1 126 3 1949 1934 1999 1954 top-tenth 1954 8 44.0 41.4 2.6 124 5 1949 1934 1999 1954 top-tenth 1938,1940 9 45.3 43.1 2.2 123 6 1949 1934 1999 1954 top-tenth 1938,1954,2004 10 45.4 43.8 1.6 112 17 1917 2015 1999 1995 top-third 2007,2021 11 44.8 43.5 1.3 101 28 1917 2015 1998 1999 top-third 1927,1981,2002 12 43.9 42.6 1.3 103 26 1949 2016 1998 1999 top-third 1926,2003,2019 18 41.2 39.7 1.5 113 15 1913,1917,1933 2016 1998 1999 top-third 1940,1959,2008,2019 24 44.0 42.6 1.4 114 14 1913 2016 1999 1988 top-third 1927,1988,2003,2006 36 43.9 42.6 1.3 111 16 1986 2016,2017 1999 1942 top-third 1940,2014 48 43.7 42.6 1.1 106 20 1986 2018 1999 1998 top-third 1942,1993,1998,2001,2009,2010 60 43.6 42.6 1.0 102 23 1917 2018 1998 1999 top-third 1993,2001,2010