1901-2000 Degrees Fahrenheit 1 53.8 52.8 1.0 75 55 1907 2010 1931 1930 normal 2 44.4 47.2 -2.8 16 114 1926 2012 1926 1931 bottom-third 1978 3 42.8 42.0 0.8 80 50 1978 2012 1931 1930 normal 4 41.3 38.4 2.9 111 19 1978 2012 1931 1925 top-third 2020 5 41.1 37.1 4.0 123 6 1978 2012 1931 1921 top-tenth 6 42.7 37.9 4.8 125 4 1978 2012 1931 1932 top-tenth 7 45.0 40.5 4.5 126 3 1978 2012 1931 1932 top-tenth 2016 8 48.4 43.8 4.6 126 3 1904,1918,1978 2017 1931 1932 top-tenth 9 51.3 47.2 4.1 126 3 1918 2017 1931 1932 top-tenth 10 54.1 50.1 4.0 126 3 1918 2012 1931 1932 top-tenth 11 56.0 52.2 3.8 126 3 1904,1918 2012 1931 1932 top-tenth 12 56.3 53.1 3.2 126 3 1918 2012 1931 1932 top-tenth 18 50.6 48.0 2.6 121 7 1905,1979 2017 1931 1932 top-tenth 1954 24 55.2 53.1 2.1 122 6 1978 2017 1931 1932 top-tenth 36 54.2 53.0 1.2 104 23 1979 2018 1931 1923 top-third 1939,2004 48 53.7 53.0 0.7 86 40 1980 2019 1931 1924 top-third 1937,1944,2010 60 53.5 53.0 0.5 72 53 1981 2020 1931 1925 normal 1949,1988,1994