1901-2000 Degrees Fahrenheit 1 62.1 62.0 0.1 67 63 1983 1896 1895 1895 normal 1976,1995 2 57.8 58.2 -0.4 51 79 1960 1908 1895 1895 normal 1899,1900,1933,1951 3 50.5 54.6 -4.1 2 128 1958 1927 1895 1895 bottom-tenth 1947,1960 4 48.4 52.0 -3.6 4 126 1978 2017 1895 1895 bottom-tenth 2010 5 -99 50.8 -99 -99 -99 1978 1927 normal 6 -99 51.1 -99 -99 -99 1977 1932 normal 7 -99 52.8 -99 -99 -99 1977 1932,2017 normal 8 -99 55.4 -99 -99 -99 1977 1932,2017 normal 9 -99 58.0 -99 -99 -99 1977 2017 normal 10 -99 60.1 -99 -99 -99 1977 2017 normal 11 -99 61.6 -99 -99 -99 1977 2017 normal 12 -99 62.3 -99 -99 -99 1977 2017 normal 18 -99 58.5 -99 -99 -99 1977 2017 normal 24 -99 62.3 -99 -99 -99 1978 2017 normal 36 -99 62.3 -99 -99 -99 1970 2021 normal 48 -99 62.3 -99 -99 -99 1971 2020 normal 60 -99 62.3 -99 -99 -99 1970,1971 2020 normal