1991-2020 Degrees Fahrenheit 1 77.2 73.7 3.5 108 9 1915 1983 1935 1936 top-tenth 2 78.9 74.9 4.0 111 4 1915 1955 1935 1934 top-tenth 3 77.1 73.5 3.6 110 4 1915 1934 1935 1934 top-tenth 4 73.2 70.0 3.2 109 4 1915 1934 1935 1934 top-tenth 5 68.5 65.9 2.6 108 4 1915 1934 1935 1934 top-tenth 1954 6 63.9 61.8 2.1 108 4 1915 2012 1935 1934 top-tenth 7 57.5 57.6 -0.1 69 42 1915 2012 1933 1935 normal 1926,1988,2011 8 53.7 54.2 -0.5 64 46 1915 2012 1933 1935 normal 1970 9 51.1 51.6 -0.5 64 45 1915 1934 1933 1935 normal 1985 10 49.4 50.4 -1.0 48 61 1915 1934 1933 1935 normal 1940,1965,1968,1983,1988,1994 11 49.6 50.5 -0.9 49 60 1915 1934 1933 1935 normal 1957,1983,1988 12 50.9 51.7 -0.8 48 59 1993 1934 1933 1935 normal 1952,1968,2014 18 54.3 55.1 -0.8 54 53 1924 1934 1933 1935 normal 1946,1982,1988 24 51.6 51.7 -0.1 74 31 1924 1935,2017 1933 1935 top-third 1963,1982,1992 36 52.8 51.7 1.1 99 4 1917 2017 1935 1936 top-tenth 48 52.1 51.7 0.4 83 18 1918 2018 1934 1935 top-third 2004,2008,2014,2022 60 51.9 51.7 0.2 80 19 1927,1930,1931 2006 1935 1936 top-third 1958,2009