1901-2000 Degrees Fahrenheit 1 54.8 54.0 0.8 72 57 1944,1976 2022 2002 2003 normal 1917 2 56.3 55.0 1.3 91 38 1944 2022 2000 2003 top-third 1990 3 54.5 52.8 1.7 101 28 1944 2021 2000 2003 top-third 1970,2000 4 51.4 49.8 1.6 102 27 1907 2021 2002 2003 top-third 1921,1936,1969,1986,1997 5 48.3 46.4 1.9 107 22 1944 2021 2002 2003 top-third 1981,1987,1990,1996 6 45.9 43.3 2.6 119 10 1944 2017 2003 1994 top-tenth 1926 7 42.6 40.4 2.2 115 14 1933,1944 2017 2003 2000 top-third 1931,1994 8 39.7 37.7 2.0 111 18 1917 2015 2002 2003 top-third 1981,2007,2022 9 37.9 35.7 2.2 112 16 1917,1933 2015 2002 2003 top-third 1981 10 36.7 34.8 1.9 106 22 1917 2015 2002 2003 top-third 2005 11 37.0 35.0 2.0 114 14 1917 2015 2002 2003 top-third 2006 12 38.0 35.9 2.1 115 13 1917 2015 2002 2003 top-tenth 18 40.6 38.3 2.3 121 7 1949 2015 2003 2004 top-tenth 24 38.1 35.9 2.2 121 6 1949 2016 2003 2004 top-tenth 36 37.8 35.8 2.0 118 8 1950 2017 2003 2004 top-tenth 2020,2021 48 37.5 35.8 1.7 113 12 1950 2018 2002 2003 top-tenth 2007 60 37.7 35.8 1.9 115 9 1917,1949,1950 2018 2003 2004 top-tenth 2006