1991-2020 Degrees Fahrenheit 1 53.7 51.9 1.8 87 42 1927 1936 1970 1969 top-third 2 48.9 47.3 1.6 86 43 1975 1934 1970 1969 top-third 3 42.8 43.0 -0.2 63 66 2002 1910 1970 1969 normal 1999 4 39.2 38.9 0.3 85 44 1899 1934,1987 1970 1968 normal 5 34.5 36.2 -1.7 56 73 1899 1934 1970 1968 normal 1952,1997 6 32.4 34.5 -2.1 49 79 1969 1992 1970 1968 normal 1930,1935,2009,2017 7 32.0 34.4 -2.4 41 87 1979 1992 1969 1970 bottom-third 1948,1967,1985,2014 8 33.4 35.8 -2.4 33 94 1899 1987 1969 1970 bottom-third 1943,1957,1993,2014 9 35.7 38.2 -2.5 36 91 1899 1934,1987,1992 1969 1970 bottom-third 10 39.1 41.1 -2.0 41 86 1899 1992 1969 1970 bottom-third 1928,1960 11 42.0 43.6 -1.6 43 84 1899 1934,1992 1969 1970 normal 1955,1989 12 43.9 44.9 -1.0 50 77 1899 1934 1970 1970 normal 1967,1970 18 40.0 41.4 -1.4 49 77 1979 1988 1970 1968 normal 1909,1922,1948,1980 24 43.9 44.9 -1.0 52 73 1917,1979 1988,2013 1970 1968 normal 1911,1982 36 42.7 44.9 -2.2 11 112 1952 2000 1957 1970 bottom-tenth 1899,1950,1957 48 43.5 45.0 -1.5 36 85 1952 1934 1970 1970 bottom-third 1923,1958,1959,1970,1980,2020 60 43.6 45.0 -1.4 40 79 1952 2016 1970 1968 normal 1904,1929,1998