1991-2020 Degrees Fahrenheit 1 46.4 44.4 2.0 84 13 2019 1934 2006 2005 top-third 2 42.4 41.2 1.2 76 21 1936 2015 2006 2004 top-third 3 38.5 39.1 -0.6 57 40 1950 1934 2004 2006 normal 1931,2004 4 37.1 37.8 -0.7 53 43 1949 1934 2001 2006 normal 1959,2012 5 38.1 38.4 -0.3 66 30 1949 1934 2006 2006 top-third 2006 6 40.1 40.5 -0.4 58 38 1949 1934 2001 2006 normal 1954,1959,1976,1987 7 43.5 43.8 -0.3 58 38 1949 2015 2006 2006 normal 1961,2006 8 47.0 47.3 -0.3 62 34 1949 2015 2001 2006 normal 1981 9 50.1 50.2 -0.1 71 25 1949 2015 2006 2006 top-third 1990,2006 10 51.7 51.6 0.1 75 21 1949 2015 2006 2005 top-third 2000 11 52.3 52.2 0.1 76 20 1949 2015 2006 2005 top-third 1941,1992 12 52.2 52.0 0.2 76 20 1949 2015 2006 2005 top-third 1941,1988,1991 18 48.3 48.2 0.1 76 19 1950 2016 2002 2006 top-third 1940,1998,2013 24 52.0 52.0 0.0 71 24 1950 2016 2002 2006 top-third 1967,1996 36 52.5 52.0 0.5 84 10 1957 2017,2022 2004 2006 top-third 2000 48 52.5 52.0 0.5 83 10 1952 2018 2004 2006 top-third 60 52.6 52.0 0.6 87 5 1933,1952 2018,2019,2022 2006 2007 top-tenth 2016,2020