1991-2020 Degrees Fahrenheit 1 57.8 60.0 -2.2 44 85 1896 1947 1984 1989 normal 2 56.5 55.8 0.7 90 39 1955 1934 1986 1989 top-third 1966,2005 3 53.3 52.3 1.0 103 26 1955 1934 1988 1989 top-third 1928 4 49.3 49.1 0.2 95 34 1955 1934 1989 1988 top-third 1949,1963,1973,1978 5 47.5 46.5 1.0 113 16 1929 1934 1989 1987 top-third 1953,2000,2006,2020 6 45.5 44.6 0.9 108 17 1929 1992 1989 1987 top-third 7 45.5 44.1 1.4 116 9 1929 1992 1989 1981 top-tenth 8 46.4 45.2 1.2 115 8 1917 2016 1989 1987 top-tenth 1940,1966,1987,2005 9 48.5 47.5 1.0 113 9 1917 2015 1989 1981 top-tenth 1967,1998 10 50.7 50.3 0.4 103 19 1917 2015 1989 1988 top-third 1981,1983 11 52.8 52.6 0.2 100 22 1917 2015 1989 1988 top-third 1938,1980,1983,1988 12 54.1 53.8 0.3 99 23 1917 2016 1989 1988 top-third 1959 18 50.4 50.7 -0.3 88 33 1917 2016 1986 1989 top-third 1919,1925,1983,1984,2003,2019 24 53.7 53.8 -0.1 91 28 1917 2016 1987 1989 top-third 1995,2003 36 53.9 53.8 0.1 102 15 1917 2016 1989 1989 top-third 1989,1993,2020 48 54.0 53.8 0.2 104 11 1913 2016 1989 1941 top-tenth 2000,2021,2022 60 53.5 53.8 -0.3 86 27 1917 2016 1989 1968 top-third 1943,1968,1996