1901-2000 Degrees Fahrenheit 1 18.7 22.7 -4.0 35 95 1936 1954 1960 1962 bottom-third 1960,1965,1988 2 13.5 20.2 -6.7 9 121 1936 1931 1936 1962 bottom-tenth 3 16.7 21.1 -4.4 15 114 1936 2002 1936 1962 bottom-third 4 22.1 24.8 -2.7 21 108 1936 2002 1962 1961 bottom-third 1997 5 28.4 30.1 -1.7 27 102 1936 2002 1962 1961 bottom-third 1902,1971 6 33.6 35.6 -2.0 22 107 1936 2017 1962 1961 bottom-third 1970 7 38.9 40.7 -1.8 22 107 1936 2002,2017 1962 1961 bottom-third 1910,1951 8 42.9 44.9 -2.0 19 110 1918 1932,2002 1962 1962 bottom-third 1962,1982 9 45.8 47.5 -1.7 23 106 1904 1932 1962 1962 bottom-third 1910,1962 10 47.8 48.8 -1.0 36 93 1918,1936 1932,2017 1962 1961 bottom-third 11 47.7 48.7 -1.0 28 101 1918 1932,2002 1962 1961 bottom-third 1903,1959,1967,1973,2009,2015 12 46.0 47.5 -1.5 20 109 1918 2017 1962 1961 bottom-third 1993,2010 18 41.8 43.5 -1.7 10 118 1918 2017 1952 1962 bottom-tenth 1980 24 45.8 47.5 -1.7 6 122 1918 2017 1952 1962 bottom-tenth 36 46.1 47.5 -1.4 5 122 1918 2018 1953 1962 bottom-tenth 1906,1952 48 46.4 47.5 -1.1 6 120 1918 2002 1919 1962 bottom-tenth 1919 60 46.4 47.5 -1.1 1 124 1907,1908,1920,1963,1997 1935 1920 1962 lowest 1907,1908,1920,1997