1901-2000 Degrees Fahrenheit 1 6.9 15.0 -8.1 17 113 1937 2006 1895 1895 bottom-third 2 -99 17.5 -99 -99 -99 1979 1992,2021 normal 3 -99 22.2 -99 -99 -99 1979 2021 normal 4 -99 28.6 -99 -99 -99 1912 2000 normal 5 -99 34.9 -99 -99 -99 1897 2006 normal 6 -99 40.9 -99 -99 -99 1912 2006 normal 7 -99 45.4 -99 -99 -99 1912 2006 normal 8 -99 47.9 -99 -99 -99 1952 2022 normal 9 -99 48.8 -99 -99 -99 1952 2022 normal 10 -99 48.4 -99 -99 -99 1952 2006 normal 11 -99 46.8 -99 -99 -99 1952 2013 normal 12 -99 44.6 -99 -99 -99 1918 2013 normal 18 -99 43.3 -99 -99 -99 1918 2013 normal 24 -99 44.5 -99 -99 -99 1952 2007 normal 36 -99 44.5 -99 -99 -99 1918 2007,2008,2018 normal 48 -99 44.5 -99 -99 -99 1918 2008 normal 60 -99 44.5 -99 -99 -99 1920 2008 normal