1991-2020 Degrees Fahrenheit 1 70.5 70.7 -0.2 69 45 1928 1956 2004 2002 normal 2 65.2 65.1 0.1 71 42 1915 1934 2004 2002 normal 3 59.9 59.8 0.1 70 42 1995 1934,2012 2003 2004 normal 1937,1990 4 55.3 55.3 0.0 77 35 1915 2012 1999 2004 top-third 1940,1992,2022 5 51.6 50.7 0.9 90 21 1915 2012 2004 2004 top-third 1976,2004 6 48.0 47.3 0.7 89 21 1915 2012 2003 2004 top-third 1953,2002 7 46.1 44.9 1.2 97 12 1915 2012 2004 2000 top-third 8 45.1 44.2 0.9 94 15 1917 1934,2012 2004 2002 top-third 2015 9 46.0 45.1 0.9 94 15 1917 1934,2012 2003 2004 top-third 10 48.2 47.1 1.1 95 12 1917 1934 2004 2002 top-third 2002 11 50.2 49.5 0.7 88 19 1917,1993 1934 2003 2004 top-third 12 52.1 51.7 0.4 86 21 1993 2012 2003 2004 top-third 1956,1987 18 50.8 50.3 0.5 91 16 1916 2016 2003 2004 top-third 2022 24 52.5 51.7 0.8 94 11 1917 2017 2004 2004 top-third 2001,2003,2004 36 52.3 51.7 0.6 88 15 1917 2017,2018 2003 2004 top-third 48 52.5 51.7 0.8 96 5 1918 2018 2004 2003 top-tenth 2003,2019 60 52.3 51.7 0.6 89 10 1930 2006 2001 2004 top-tenth 1938,2015