1901-2000 Degrees Fahrenheit 1 45.1 40.1 5.0 112 18 1978 1927,2017 1960 1957 top-third 1992 2 38.7 38.7 0.0 59 71 1978 2017 1960 1957 normal 2016,2022 3 37.0 38.9 -1.9 28 101 1978 1932 1958 1960 bottom-third 4 39.5 41.0 -1.5 28 101 1977 1932 1958 1960 bottom-third 1942,1945,1981 5 43.5 44.6 -1.1 32 97 1977 1932 1958 1960 bottom-third 2001 6 48.1 48.9 -0.8 35 94 1977 1932 1959 1960 bottom-third 1929 7 52.2 52.7 -0.5 36 93 1977 1932 1959 1960 bottom-third 1985 8 55.3 55.8 -0.5 36 93 1977 1932 1959 1960 bottom-third 1941,1994 9 57.2 57.8 -0.6 32 97 1977 1932 1959 1960 bottom-third 1959,1984,1985,2001 10 57.8 58.6 -0.8 27 102 1977 2017 1958 1960 bottom-third 1899,1910,1941,1984,1985 11 58.0 58.5 -0.5 37 92 1977 2017 1959 1960 bottom-third 1959 12 56.1 57.7 -1.6 9 120 1977 2017 1951 1960 bottom-tenth 1951 18 53.6 54.7 -1.1 14 114 1978 2017 1959 1960 bottom-third 1971,1985 24 56.8 57.7 -0.9 18 110 1978 2017 1959 1960 bottom-third 1941,1979 36 56.8 57.7 -0.9 12 115 1979 2018 1918 1960 bottom-tenth 1906,1965 48 56.8 57.7 -0.9 10 116 1980 2019,2020 1905 1960 bottom-tenth 1962,1965,1982 60 57.2 57.7 -0.5 25 100 1980,1981 2020 1918 1960 bottom-third 1908,1918