1991-2020 Degrees Fahrenheit 1 76.8 79.8 -3.0 34 95 1966 1998 1895 1895 bottom-third 2 72.7 76.8 -4.1 8 121 1976 1998 1895 1895 bottom-tenth 1923,1997 3 69.1 73.3 -4.2 6 123 1907 2011,2019 1895 1895 bottom-tenth 4 65.8 69.9 -4.1 7 122 1960 2012 1895 1895 bottom-tenth 5 60.7 66.7 -6.0 1 128 1895 2019 1895 1895 lowest 6 58.5 63.9 -5.4 1 128 1895 2017 1895 1895 lowest 7 -99 62.4 -99 -99 -99 1940,1958 2017 normal 8 -99 61.9 -99 -99 -99 1940 2017 normal 9 -99 62.6 -99 -99 -99 1904,1958 2017 normal 10 -99 64.1 -99 -99 -99 1904 2017 normal 11 -99 65.7 -99 -99 -99 1904 2017 normal 12 -99 67.1 -99 -99 -99 1904,1918 2017 normal 18 -99 66.0 -99 -99 -99 1902 2020 normal 24 -99 67.1 -99 -99 -99 1905 2017 normal 36 -99 67.0 -99 -99 -99 1906,1970 2019,2021 normal 48 -99 67.0 -99 -99 -99 1905 2020 normal 60 -99 66.9 -99 -99 -99 1906 2020 normal