1901-2000 Degrees Fahrenheit 1 54.9 46.4 8.5 125 4 1963 2015 1932 1933 top-tenth 1971 2 54.3 50.0 4.3 121 8 1976 2015 1932 1931 top-tenth 3 57.9 54.6 3.3 119 10 1976 1931 1932 1931 top-tenth 4 63.2 59.6 3.6 123 6 1976 1931 1932 1931 top-tenth 5 66.4 63.6 2.8 123 6 1976 1931 1932 1931 top-tenth 1921,2007 6 68.5 66.3 2.2 121 8 1976 1931,2016 1932 1931 top-tenth 2019 7 69.9 67.9 2.0 121 8 1976 1931 1932 1931 top-tenth 2019 8 70.6 68.2 2.4 124 5 1976 1998 1932 1931 top-tenth 9 69.6 67.6 2.0 122 7 1976 2015 1932 1931 top-tenth 1922 10 68.2 66.4 1.8 124 5 1976 2015,2016 1932 1927 top-tenth 1922,1927,2019 11 66.3 64.7 1.6 118 11 1976 2016 1932 1927 top-tenth 1990,2012,2020 12 65.1 63.1 2.0 122 7 1976 1921 1932 1927 top-tenth 1998 18 65.5 64.2 1.3 118 10 1968 2016 1931 1932 top-tenth 1911,1925,2012 24 64.6 63.1 1.5 121 7 1969 1922 1932 1922 top-tenth 1999 36 64.4 63.1 1.3 119 8 1969 2017,2019 1932 1927 top-tenth 1922,2022 48 64.1 63.1 1.0 118 8 1969 2019 1932 1924 top-tenth 1923,1924,1934 60 64.0 63.1 0.9 116 9 1970 2019,2020 1932 1925 top-tenth 1934,1935,1936