1901-2000 Degrees Fahrenheit 1 57.3 54.5 2.8 102 28 1907 1981 2014 2015 top-third 2002 2 53.9 49.1 4.8 124 6 1960 2012 2015 2012 top-tenth 3 48.9 44.0 4.9 124 6 1899 2012 2015 2012 top-tenth 1921 4 44.4 40.3 4.1 120 10 1912 2012 2015 2012 top-tenth 5 44.0 38.9 5.1 127 2 1978 2012 2015 2012 top-tenth 2017 6 44.8 39.7 5.1 126 3 1899,1912 2012 2015 2012 top-tenth 7 46.7 42.2 4.5 126 3 1899 2012 2015 2012 top-tenth 8 49.8 45.4 4.4 125 4 1899 2017 2015 2012 top-tenth 9 52.4 48.8 3.6 125 4 1899,1918 2017 2015 2012 top-tenth 10 54.9 51.7 3.2 125 4 1899 2012 2015 2012 top-tenth 11 56.7 53.6 3.1 125 4 1918 2012 2015 2012 top-tenth 12 57.4 54.5 2.9 125 4 1918 2012,2017 2015 2012 top-tenth 18 51.2 49.6 1.6 111 17 1979 2017 2015 2013 top-third 2022 24 55.6 54.5 1.1 107 21 1905 2017 2015 2013 top-third 36 54.6 54.5 0.1 64 63 1979 2018 2015 2014 normal 1909,1925,1938,1948,1950,1967,1973 48 54.9 54.5 0.4 81 45 1980 2019 2011 2015 normal 1925,1988 60 55.6 54.5 1.1 114 11 1906,1908 2020 2015 2008 top-tenth 2017