1991-2020 Degrees Fahrenheit 1 -99 41.6 -99 -99 -99 1985 2016 normal 2 -99 47.0 -99 -99 -99 1985 1988 normal 3 -99 53.3 -99 -99 -99 1985 1963 normal 4 -99 58.8 -99 -99 -99 1985 1967 normal 5 -99 62.2 -99 -99 -99 1916 2021 normal 6 -99 62.9 -99 -99 -99 1916 2021 normal 7 -99 62.5 -99 -99 -99 1916 2021 normal 8 -99 61.1 -99 -99 -99 1916 2021 normal 9 -99 59.4 -99 -99 -99 1955 2021 normal 10 -99 57.4 -99 -99 -99 1916,1955 2015 normal 11 -99 55.5 -99 -99 -99 1916 2015 normal 12 -99 53.7 -99 -99 -99 1916 2015 normal 18 -99 56.8 -99 -99 -99 1916 2015 normal 24 -99 53.7 -99 -99 -99 1917 2016 normal 36 -99 53.8 -99 -99 -99 1913,1917 2016 normal 48 -99 53.8 -99 -99 -99 1913 2016 normal 60 -99 53.8 -99 -99 -99 1913,1920 2016 normal