1991-2020 Degrees Fahrenheit 1 66.2 67.4 -1.2 35 47 1969 2005 1980 1976 normal 2 61.1 62.6 -1.5 30 52 1947 2018 1979 1980 normal 1950 3 56.5 56.8 -0.3 51 31 1947 1987 1979 1980 normal 2018 4 51.0 50.6 0.4 60 22 1947 2012 1980 1977 top-third 5 45.2 44.6 0.6 66 16 1947 2012 1980 1977 top-third 6 40.4 39.9 0.5 62 19 1979 2012 1980 1973 top-third 1973 7 37.2 37.5 -0.3 61 20 1979 2012 1980 1942 top-third 1985,1992 8 36.9 37.1 -0.2 60 19 1979 2012 1980 1981 top-third 9 37.7 38.4 -0.7 53 26 1979 2012 1980 1976 top-third 2013 10 39.7 40.7 -1.0 50 29 1943,1979 2012,2016 1980 1976 normal 11 42.4 43.3 -0.9 50 29 1943 2012 1980 1976 normal 1961 12 45.0 45.6 -0.6 51 28 1943,1951,1979 2012 1980 1976 normal 18 42.7 43.7 -1.0 47 31 1951 1999 1980 1974 normal 24 44.6 45.6 -1.0 45 31 1952,1979 2017 1980 1955 normal 1995 36 43.7 45.6 -1.9 20 54 1979 2000 1980 1978 bottom-third 1961,1966,1974 48 43.5 45.6 -2.1 14 58 1968,1980 2001,2002 1980 1978 bottom-third 1960,1963,1996 60 43.4 45.6 -2.2 8 62 1969 2002 1979 1980 bottom-third 1963,1966,1973,1979