1991-2020 Degrees Fahrenheit 1 19.8 24.2 -4.4 38 55 1955 2012 1978 1977 normal 2 9.7 17.2 -7.5 15 78 1913 2012 1972 1978 bottom-third 2022 3 3.6 13.3 -9.7 5 88 1912 2012 1950 1978 bottom-tenth 2014 4 2.9 12.8 -9.9 2 88 2014 2012 1979 1978 bottom-tenth 5 6.4 15.6 -9.2 1 87 1979 2012 1979 1978 lowest 6 12.6 20.0 -7.4 3 84 1920 2012 1920 1978 bottom-tenth 1996 7 18.8 25.0 -6.2 5 80 1920 2012 1950 1978 bottom-tenth 8 24.4 29.7 -5.3 5 79 1920 2012 1951 1978 bottom-tenth 9 28.7 33.7 -5.0 4 80 1951 2012 1951 1978 bottom-tenth 10 31.8 36.4 -4.6 3 79 1951 2012 1959 1978 bottom-tenth 11 34.0 37.8 -3.8 6 76 1951 2012 1959 1978 bottom-tenth 1952 12 34.3 37.9 -3.6 9 73 1951 2012 1967 1978 bottom-third 18 27.7 31.8 -4.1 6 72 1951 1999 1957 1978 bottom-tenth 24 35.1 37.8 -2.7 12 65 1952 2017 1972 1978 bottom-third 36 35.4 37.8 -2.4 12 60 1952 2000 1972 1978 bottom-third 1970,1971 48 35.8 37.8 -2.0 17 50 1952 2002 1974 1978 bottom-third 1974,1981 60 35.9 37.7 -1.8 18 45 1953 2002 1975 1978 bottom-third 1962,1975,1981,1982