1901-2000 Degrees Fahrenheit 1 27.7 25.3 2.4 85 45 1937 2003 1939 1938 normal 2 30.7 26.2 4.5 117 12 1898 1981 1939 1938 top-tenth 1923 3 33.6 29.5 4.1 117 12 1949 2018 1939 1938 top-tenth 4 37.3 34.3 3.0 114 15 1917 1934,2018 1939 1938 top-third 1935 5 42.0 39.6 2.4 113 16 1917 1934,2015 1939 1938 top-third 6 46.8 44.5 2.3 113 16 1917 1934 1939 1938 top-third 7 50.5 48.4 2.1 112 17 1917 2018,2022 1939 1938 top-third 1911 8 52.1 50.3 1.8 106 23 1917 2022 1939 1938 top-third 1956,1995 9 52.7 50.8 1.9 111 18 1917 2022 1939 1938 top-third 10 52.3 50.3 2.0 114 15 1913 2022 1939 1938 top-third 1959 11 51.0 49.1 1.9 110 19 1913 2018 1939 1935 top-third 2001 12 48.4 47.5 0.9 89 40 1904,1913,1924 2018 1939 1938 top-third 1944,1989 18 47.2 46.5 0.7 82 46 1913 1935 1938 1939 normal 1957,1987 24 48.1 47.5 0.6 78 50 1899,1913 2018 1938 1939 normal 1938,1948,1979,1981,1983,2012 36 48.3 47.5 0.8 88 39 1900,1914 2018 1939 1937 top-third 1942,1960,1983,1993 48 48.1 47.5 0.6 83 43 1899 2018 1939 1938 normal 1935,1943,1944,1964,1981,1983 60 48.0 47.5 0.5 79 46 1900 2019 1935 1939 normal 1943,1959,1964,1981