1991-2020 Degrees Fahrenheit 1 67.7 70.0 -2.3 52 70 1931 2003 1906 1908 normal 2 65.0 68.5 -3.5 36 85 1958 2023 1908 1907 bottom-third 1955,1980 3 64.9 67.1 -2.2 46 70 1958 2023 1908 1907 normal 4 65.0 67.2 -2.2 51 61 1958 2017 1908 1909 normal 1984 5 65.4 68.0 -2.6 39 71 1958 2023 1908 1907 normal 1907 6 66.7 69.6 -2.9 30 80 1958 2020 1908 1907 bottom-third 1953,1961,2010 7 68.3 71.4 -3.1 28 81 1958 2020 1908 1907 bottom-third 1906 8 69.8 72.8 -3.0 27 82 1958 2020 1908 1907 bottom-third 1906 9 71.0 73.9 -2.9 25 84 1958 2020 1908 1907 bottom-third 1906,1968 10 71.7 74.7 -3.0 22 87 1958 2017,2020,2023 1908 1907 bottom-third 1954,1963 11 72.1 75.1 -3.0 20 89 1958 2020 1904 1908 bottom-third 1919,1970 12 72.5 75.0 -2.5 32 76 1904 2020,2023 1908 1906 bottom-third 1929,1981 18 70.4 73.1 -2.7 27 71 1941 2023 1908 1909 bottom-third 1945,1954,1960 24 72.3 74.9 -2.6 21 75 1941 2021 1908 1907 bottom-third 1920,1951,1967 36 72.3 74.8 -2.5 16 70 1941 2021,2022,2023 1908 1908 bottom-third 1908,1921,1925,1953,1968 48 72.3 74.8 -2.5 11 67 1911 2023 1909 1909 bottom-third 1954,1963,1966,1971 60 -99 74.8 -99 -99 -99 1911 2023 normal