1901-2000 Degrees Fahrenheit 1 29.8 22.7 7.1 117 13 1936 1954 2001 2000 top-tenth 1952 2 29.2 20.2 9.0 126 4 1936 1931 2001 1998 top-tenth 1998 3 29.7 21.1 8.6 128 1 1936 2002 2001 2002 highest 4 34.3 24.8 9.5 128 1 1936 2002 2001 2002 highest 5 37.5 30.1 7.4 128 1 1936 2002 2001 2002 highest 6 41.4 35.6 5.8 127 2 1936 2017 2001 2002 top-tenth 7 45.9 40.7 5.2 128 1 1936 2002,2017 2001 2002 highest 2017 8 49.5 44.9 4.6 128 1 1918 1932,2002 2001 1932 highest 1932 9 51.6 47.5 4.1 126 3 1904 1932 2001 1932 top-tenth 10 52.5 48.8 3.7 126 3 1918,1936 1932,2017 2001 1932 top-tenth 11 52.5 48.7 3.8 128 1 1918 1932,2002 2001 1932 highest 1932 12 50.7 47.5 3.2 125 4 1918 2017 2001 1932 top-tenth 18 44.9 43.5 1.4 102 26 1918 2017 2001 2000 top-third 1923 24 49.0 47.5 1.5 107 21 1918 2017 2001 2000 top-third 36 49.4 47.5 1.9 120 7 1918 2018 2001 2000 top-tenth 2007,2017 48 49.6 47.5 2.1 125 1 1918 2002 2001 2002 highest 60 49.4 47.5 1.9 123 2 1907,1908,1920,1963,1997 1935 2001 1935 top-tenth