1991-2020 Degrees Fahrenheit 1 37.8 34.2 3.6 69 9 1983 2021 2018 2015 top-third 2 39.8 39.3 0.5 53 25 2000 2021 2018 2016 top-third 1957 3 43.9 45.3 -1.4 30 48 1976 2021 2018 2017 normal 4 52.0 51.4 0.6 58 20 1976 2021 2018 2017 top-third 5 56.9 56.7 0.2 51 27 1985 2021 2018 2016 normal 2012 6 60.6 60.6 0.0 50 27 1976 1954 2018 2016 normal 1965,1984 7 62.7 62.8 -0.1 48 29 1976 1954 2017 2018 normal 1952,2017 8 62.9 63.2 -0.3 42 35 1961,1976 1998 2013 2018 normal 1952,1975 9 62.3 62.3 0.0 47 30 1961 1954 2014 2018 normal 1947 10 60.2 60.7 -0.5 41 36 1951,1961 2012 2014 2018 normal 2014 11 57.4 58.4 -1.0 38 39 1951 2012 2014 2018 normal 1971 12 55.1 56.1 -1.0 39 38 1979 2012 2014 2018 normal 18 56.7 57.6 -0.9 41 35 1951 2012 2014 2018 normal 1957,1986,1995,2008 24 55.5 56.1 -0.6 45 31 1979 2012 2014 2018 normal 2010 36 56.1 56.1 0.0 53 22 1961,1962,1980 2012,2017 2015 2018 top-third 48 56.6 56.0 0.6 65 9 1961 2001 2016 2018 top-third 1955,2003,2006 60 56.6 56.0 0.6 69 4 1961,1962 2002 2018 2016 top-tenth 2001,2006,2007,2020