1991-2020 Degrees Fahrenheit 1 73.2 65.0 8.2 95 1 1953 2015 2014 2015 highest 2 67.0 61.7 5.3 95 1 1953 2015 2014 2015 highest 3 61.1 58.0 3.1 93 3 2011 1992 2014 1992 top-tenth 4 58.3 54.7 3.6 95 1 1955 1992,2015 2014 1992 highest 1992 5 55.5 51.4 4.1 95 1 1955 2015 2014 2015 highest 6 52.4 48.7 3.7 95 1 1950 1934,1992,2015 2014 1992 highest 1934,1992 7 50.1 46.7 3.4 92 3 1950 1934 2014 1992 top-tenth 8 48.5 46.0 2.5 92 3 1950 1934 2014 1992 top-tenth 9 49.6 46.6 3.0 93 2 1950 1934 2014 1934 top-tenth 10 51.1 48.4 2.7 94 1 1950 2015 2014 2015 highest 11 53.2 50.6 2.6 94 1 1950 2015 2014 2015 highest 12 55.3 52.5 2.8 94 1 1950 2015 2014 2015 highest 18 53.1 51.2 1.9 93 2 1930 2016 2014 2015 top-tenth 24 53.7 52.5 1.2 92 2 1950 2016 2014 2015 top-tenth 36 53.5 52.5 1.0 90 3 1950 2016 2014 2015 top-tenth 48 53.1 52.5 0.6 86 6 1932 2016 2014 2006 top-tenth 2021 60 52.6 52.4 0.2 80 11 1933 2016,2018 2014 2008 top-third 1992,1999,2000