1991-2020 Degrees Fahrenheit 1 30.5 28.6 1.9 101 26 1937 1953 1952 1953 top-third 2 29.6 28.3 1.3 99 27 1979 1934 1952 1953 top-third 1935,1943 3 33.4 31.4 2.0 113 10 1979 2000 1953 1934 top-tenth 1958 4 38.7 36.0 2.7 115 6 1979 2000 1953 1934 top-tenth 5 44.0 41.5 2.5 112 8 1979 2022 1953 1934 top-tenth 6 48.7 46.8 1.9 111 9 1979 2022 1953 1934 top-tenth 7 52.4 50.9 1.5 111 9 1979 2022 1953 1934 top-tenth 2013,2021 8 54.7 53.2 1.5 110 9 1916 2022 1953 1934 top-tenth 2006 9 54.7 53.7 1.0 104 15 1916 2022 1953 1935 top-third 10 53.5 53.1 0.4 95 23 1908 2013 1952 1953 top-third 2008 11 52.4 51.9 0.5 98 20 1916 2013 1953 1935 top-third 2016 12 50.5 50.2 0.3 94 24 1916 2013 1953 1935 top-third 2005 18 49.6 49.1 0.5 96 17 1913 2013 1953 1935 top-third 1992,2002,2004,2005 24 50.4 50.2 0.2 90 21 1910 2000 1953 1935 top-third 1992,2008,2019 36 49.3 50.2 -0.9 61 45 1918 2001,2002 1953 1936 normal 1994,1998,2011 48 49.1 50.3 -1.2 48 54 1918 2002 1953 1937 normal 60 49.2 50.2 -1.0 45 53 1913,1920 2003 1953 1938 normal 1937,1938,1966,1997