1925-2000 Degrees Fahrenheit 1 27.6 25.5 2.1 61 38 1996 2013 1961 1957 normal 2010 2 33.0 33.0 0.0 39 60 1992 2018 1961 1957 normal 1967,1972 3 39.1 38.5 0.6 51 48 1996 2018 1961 1957 normal 4 43.0 42.1 0.9 63 36 1970 2019 1961 1957 normal 1929,1978,2011 5 44.0 43.5 0.5 55 44 1970 2019 1961 1957 normal 1953,1964,1972,1999 6 42.5 42.6 -0.1 38 61 1965,1970 2019 1961 1957 normal 1934,1986 7 39.7 39.8 -0.1 39 60 1985 2016,2019 1961 1958 normal 8 36.1 36.2 -0.1 40 59 1971 2019 1961 1958 normal 1932,1974 9 33.5 32.7 0.8 55 44 1971 2019 1961 1958 normal 10 30.5 29.6 0.9 59 40 1971 2016 1961 1958 normal 1937,1994,2020 11 27.0 27.3 -0.3 35 63 1971 2016 1960 1961 normal 12 25.5 26.0 -0.5 31 67 1956 2016 1959 1961 bottom-third 18 30.9 31.5 -0.6 20 78 1956,1971 2016,2019 1959 1961 bottom-third 1952,1973 24 25.5 25.9 -0.4 22 75 1972 2019 1960 1961 bottom-third 1951,1964 36 25.6 25.9 -0.3 28 68 1973 2016 1961 1960 bottom-third 1954 48 25.4 25.9 -0.5 26 69 1974 2019 1959 1961 bottom-third 1954 60 25.8 25.9 -0.1 35 59 1975 2019 1960 1961 normal 1948