1991-2020 Degrees Fahrenheit 1 -99 43.4 -99 -99 -99 1960 2012 normal 2 -99 39.5 -99 -99 -99 1978 2012 normal 3 -99 37.5 -99 -99 -99 1978 2012,2020 normal 4 -99 37.7 -99 -99 -99 1978 2012 normal 5 -99 39.5 -99 -99 -99 1978 2012 normal 6 -99 42.5 -99 -99 -99 1978 2002 normal 7 -99 46.3 -99 -99 -99 1977 2016 normal 8 -99 49.9 -99 -99 -99 1977 2016 normal 9 -99 53.0 -99 -99 -99 1977 2012 normal 10 -99 55.0 -99 -99 -99 1977 2012 normal 11 -99 55.7 -99 -99 -99 1968,1977 2012 normal 12 -99 55.6 -99 -99 -99 1968 2012,2020 normal 18 -99 51.2 -99 -99 -99 1978 2017 normal 24 -99 55.5 -99 -99 -99 1978 2017 normal 36 -99 55.5 -99 -99 -99 1979 2022 normal 48 -99 55.5 -99 -99 -99 1970 2019,2020,2022 normal 60 -99 55.4 -99 -99 -99 1968,1970 2020 normal