1901-2000 Degrees Fahrenheit 1 65.1 64.8 0.3 63 66 1993 2021 1935 1939 normal 1930,1980 2 63.4 61.0 2.4 111 18 1993 2021 1939 1926 top-third 3 60.3 57.5 2.8 117 12 1916 2021 1939 1940 top-tenth 4 56.7 54.1 2.6 117 12 2011 2021 1939 1936 top-tenth 5 53.7 50.9 2.8 119 10 1917 2015 1939 1934 top-tenth 6 51.0 48.1 2.9 122 7 1917 2015 1939 1934 top-tenth 2007 7 48.3 45.6 2.7 120 9 1917 2015 1939 1934 top-tenth 8 47.0 43.9 3.1 123 5 1917 2015 1939 1934 top-tenth 9 46.1 43.2 2.9 123 5 1917 2015 1939 1934 top-tenth 2021 10 46.4 43.7 2.7 122 6 1917 2015 1939 1934 top-tenth 11 47.5 44.9 2.6 122 6 1917 2015 1939 1934 top-tenth 12 49.0 46.5 2.5 122 6 1917 2015 1939 1934 top-tenth 18 48.9 47.0 1.9 118 10 1917 2015 1939 1940 top-tenth 1959,2003,2005,2017 24 48.1 46.5 1.6 113 14 1917 2016 1939 1935 top-third 2013,2019 36 48.0 46.5 1.5 114 12 1913,1917 2016 1939 1940 top-tenth 1941,1994,2007,2020 48 47.3 46.4 0.9 94 31 1913 2016 1939 1940 top-third 1943,1968,1970,1991 60 47.1 46.4 0.7 86 38 1917 2016,2018 1939 1938 top-third 1944,1962,1968,1969