1901-2000 Degrees Fahrenheit 1 18.7 17.1 1.6 77 53 1918 2023 1991 1990 normal 2 20.8 19.5 1.3 74 55 1918 2016 1990 1991 normal 1942,1972 3 26.0 24.3 1.7 88 41 1918 2016 1990 1991 top-third 1989 4 31.5 29.7 1.8 92 37 1918 2023 1990 1991 top-third 1919 5 36.1 35.1 1.0 83 46 1918 2016 1990 1991 normal 1942 6 41.2 39.9 1.3 87 42 1918 2023 1990 1991 top-third 7 44.7 43.7 1.0 88 41 1918 2023 1990 1991 top-third 2014 8 47.0 46.0 1.0 93 36 1918 2023 1990 1991 top-third 1939,2014 9 48.1 46.7 1.4 98 31 1918 2023 1990 1991 top-third 10 47.8 46.1 1.7 109 20 1918 2023 1991 1991 top-third 1949,1958,1974,1991,2020 11 46.4 44.5 1.9 111 18 1918 2023 1991 1980 top-third 1954,1980 12 44.6 42.3 2.3 114 15 1918 2023 1991 1950 top-third 18 43.9 41.5 2.4 115 13 1905 2013,2017 1991 1950 top-tenth 2003 24 44.4 42.3 2.1 116 12 1918 2023 1991 1992 top-tenth 2019 36 43.6 42.3 1.3 103 24 1919 2023 1991 1956 top-third 1933,1951,1956,1993,2004,2006 48 43.5 42.3 1.2 100 26 1908 2023 1991 1956 top-third 1952,1954,1999,2004,2006 60 43.4 42.3 1.1 96 29 1908 2023 1991 1956 top-third 1955