1991-2020 Degrees Fahrenheit 1 57.7 57.5 0.2 67 41 1945 1934 2013 2014 normal 2 52.7 51.3 1.4 84 24 1983 1977 2014 2012 top-third 1948 3 46.0 44.7 1.3 86 22 1950 2012 2014 2012 top-third 1942 4 36.5 38.2 -1.7 45 63 1917 2012 2014 2012 normal 1939,1959,1963,1984,2022 5 32.6 33.5 -0.9 60 47 1979 2012 2014 2012 normal 1914,1949 6 31.1 31.3 -0.2 66 41 1979 2012 2014 2012 normal 7 30.2 31.7 -1.5 51 56 1979 2012 2014 2013 normal 1933,1945,1957 8 32.4 33.7 -1.3 51 56 1979 2012 2014 2013 normal 2009 9 35.4 36.8 -1.4 48 58 1979 2012 2014 2013 normal 10 38.9 39.9 -1.0 49 56 1979 2012 2014 2013 normal 1930,2009,2018 11 41.5 42.7 -1.2 44 61 1979 2012 2014 2013 normal 1935,1974 12 43.8 44.7 -0.9 48 57 1979 2012 2014 2013 normal 1948 18 37.6 40.3 -2.7 17 87 1979 2017 1997 2014 bottom-third 24 42.8 44.7 -1.9 19 83 1979 2017 1997 2014 bottom-third 1953,1972,1973,1983 36 43.7 44.7 -1.0 41 58 1918 2013,2018 1998 2014 normal 1936,1954,1958,1959,1977 48 45.2 44.7 0.5 84 13 1980 2013 2011 2014 top-third 1933,1942,2005,2009,2017 60 45.0 44.7 0.3 77 18 1920 2016 2011 2014 top-third 2004,2018,2021