1901-2000 Degrees Fahrenheit 1 37.9 36.2 1.7 82 47 1989 2015 1978 1972 normal 1964 2 41.8 40.8 1.0 79 50 1917 2015 1977 1978 normal 3 46.4 46.2 0.2 64 65 1917 1931 1977 1978 normal 4 51.5 51.8 -0.3 50 79 1976 1931 1977 1978 normal 5 56.0 56.4 -0.4 42 87 1976 1931 1977 1978 bottom-third 1932,1977 6 58.9 59.7 -0.8 26 103 1976 1931 1976 1978 bottom-third 1895,1929,1944,1951 7 60.6 61.5 -0.9 21 108 1976 1931 1976 1978 bottom-third 1929 8 60.8 61.9 -1.1 18 111 1976 1931 1976 1978 bottom-third 1945,1960,1961 9 60.1 61.1 -1.0 18 111 1976 1931 1976 1978 bottom-third 1924,2000 10 58.8 59.6 -0.8 27 102 1917 1921 1976 1978 bottom-third 1910,1920,1963,1993 11 56.0 57.5 -1.5 8 121 1917 1921 1976 1978 bottom-tenth 1895,1924,1967 12 53.4 55.5 -2.1 4 125 1917 1921 1978 1978 bottom-tenth 1978 18 55.7 56.9 -1.2 12 116 1977 2016 1978 1975 bottom-tenth 1967 24 53.4 55.5 -2.1 1 127 1979 1922 1979 1978 lowest 36 53.9 55.5 -1.6 3 124 1978,1980 2018 1978 1977 bottom-tenth 48 53.7 55.5 -1.8 1 125 1979 2019 1979 1978 lowest 60 54.1 55.5 -1.4 2 123 1980 2020 1979 1978 bottom-tenth 1981