1901-2000 Degrees Fahrenheit 1 8.3 16.4 -8.1 10 120 1936 1998 1936 1978 bottom-tenth 2 5.4 14.4 -9.0 5 125 1912 1998 1936 1978 bottom-tenth 3 8.4 15.7 -7.3 4 125 1904 2002 1936 1978 bottom-tenth 2014 4 14.0 19.7 -5.7 7 122 1904 2002 1977 1978 bottom-tenth 2014 5 20.4 25.1 -4.7 8 121 1977 2002 1977 1978 bottom-tenth 1899 6 27.3 30.6 -3.3 9 120 1977 2002 1977 1978 bottom-tenth 1994,2014 7 33.0 35.7 -2.7 9 120 1904 2002 1977 1978 bottom-tenth 2014 8 37.2 39.9 -2.7 7 122 1904 2002 1977 1978 bottom-tenth 9 40.1 42.6 -2.5 7 122 1904 2002 1977 1978 bottom-tenth 1905,1994 10 41.8 43.8 -2.0 13 116 1918 2002 1977 1978 bottom-tenth 1929 11 41.7 43.7 -2.0 12 117 1918 2002 1977 1978 bottom-tenth 1912 12 40.4 42.4 -2.0 12 117 1918 2017 1977 1978 bottom-tenth 1994 18 36.3 38.4 -2.1 3 125 1918 2017 1918 1978 bottom-tenth 1913 24 41.6 42.4 -0.8 27 101 1918 2017 1978 1976 bottom-third 1966,1971,1973 36 41.1 42.3 -1.2 9 118 1918 2013 1953 1978 bottom-tenth 1952 48 41.5 42.3 -0.8 12 114 1918 2002 1968 1978 bottom-tenth 1908,1968 60 41.7 42.3 -0.6 16 109 1920 2002 1970 1978 bottom-third 1917,1931,1952