1901-2000 Degrees Fahrenheit 1 49.2 40.1 9.1 128 1 2013 1987 1986 1987 highest 2 38.9 31.8 7.1 123 6 1899 1910 1986 1977 top-tenth 3 34.3 24.5 9.8 127 2 1899 2012 1986 1987 top-tenth 4 29.7 19.4 10.3 127 2 1936 2012 1986 1987 top-tenth 5 27.4 17.7 9.7 126 2 1936 2012 1986 1987 top-tenth 6 26.3 19.0 7.3 124 4 1936 2012 1986 1987 top-tenth 7 28.8 22.5 6.3 123 5 1936 2012 1986 1987 top-tenth 8 31.9 26.6 5.3 122 6 1936 2012 1986 1987 top-tenth 9 35.3 31.0 4.3 121 7 1936 2012 1986 1987 top-tenth 1999 10 38.6 34.7 3.9 119 9 1936 2012 1986 1931 top-tenth 2002 11 40.9 37.2 3.7 121 7 1936 2012 1986 1931 top-tenth 1931 12 42.2 38.5 3.7 121 7 1936 2012 1986 1987 top-tenth 18 34.4 32.0 2.4 109 18 1917,1951 2017 1986 1984 top-third 24 39.9 38.5 1.4 97 30 1917 2017 1986 1984 top-third 36 39.7 38.5 1.2 95 31 1918 2000 1986 1985 top-third 1955 48 39.8 38.4 1.4 98 27 1899 2001 1986 1984 top-third 2016,2020 60 39.9 38.4 1.5 98 26 1920 2002 1986 1942 top-third 1989,2013