1901-2000 Degrees Fahrenheit 1 44.4 41.6 2.8 91 39 1960 2012 1941 1938 top-third 1898,2003 2 36.9 36.6 0.3 67 63 1978 2012 1941 1939 normal 3 34.0 33.6 0.4 69 61 1978 2012 1941 1939 normal 1943,2011 4 34.9 33.1 1.8 91 38 1978 2012 1941 1939 top-third 1927,1957 5 36.6 34.9 1.7 93 36 1978 2012 1941 1939 top-third 6 40.4 38.4 2.0 101 28 1978 2012 1941 1939 top-third 1990,2007 7 44.6 42.6 2.0 104 25 1977 2012 1941 1939 top-third 8 48.6 46.5 2.1 112 17 1977 2012,2017 1941 1939 top-third 2008 9 51.7 49.8 1.9 112 17 1977 2012 1941 1939 top-third 1974 10 54.0 52.1 1.9 113 16 1977 2012 1941 1935 top-third 1922,2020 11 55.1 53.1 2.0 116 13 1977 2012 1941 1935 top-tenth 12 55.3 53.1 2.2 118 11 1918 2012 1941 1935 top-tenth 18 49.8 48.2 1.6 111 17 1905,1979 2017 1941 1935 top-third 1935,2003,2005,2022 24 54.1 53.1 1.0 101 27 1905,1978 2017 1941 1939 top-third 1939,2005 36 53.5 53.0 0.5 77 50 1979 2018 1941 1940 normal 1916,1940,1945 48 53.8 53.0 0.8 94 32 1980 2019 1941 1937 top-third 1937,1991,1993,2017 60 53.7 53.0 0.7 86 39 1981 2020 1941 1939 top-third 1937,1938,1943,1945,1995