1901-2000 Degrees Fahrenheit 1 39.6 40.8 -1.2 41 88 1976 2001 1895 1896 bottom-third 1993,2002 2 44.9 47.7 -2.8 15 114 1976 1963,2016 1895 1896 bottom-third 1907,1996,2018 3 50.8 53.9 -3.1 3 126 1976 1931 1896 1895 bottom-tenth 1951 4 56.6 58.8 -2.2 6 123 1976 2016 1896 1895 bottom-tenth 1907 5 60.2 62.1 -1.9 10 119 1976 1931 1896 1895 bottom-tenth 6 62.0 63.7 -1.7 12 117 1976 1931 1896 1895 bottom-tenth 1904,1972,1974 7 63.0 63.5 -0.5 41 88 1917,1976 1934,2016 1895 1896 bottom-third 2008 8 62.4 62.0 0.4 74 55 1907 2010,2016 1895 1896 normal 1942,1948,1978 9 59.4 59.5 -0.1 51 78 1917 2016 1895 1896 normal 1910,1952,2009,2019 10 56.4 56.5 -0.1 56 73 1917 2012,2016 1895 1896 normal 1900,1970,1984,2003,2019 11 53.9 53.6 0.3 74 55 1904,1979 2012 1895 1896 normal 2015 12 52.0 51.6 0.4 76 52 1904 2016 1896 1896 normal 1927,1981,2013,2019 18 55.5 55.7 -0.2 54 74 1904 2012,2016 1896 1896 normal 1915,1930,1976 24 -99 51.6 -99 -99 -99 1979 2017 normal 36 -99 51.6 -99 -99 -99 1905 2000,2017,2018 normal 48 -99 51.6 -99 -99 -99 1905 2007,2018 normal 60 -99 51.6 -99 -99 -99 1907 2002,2020 normal