1991-2020 Degrees Fahrenheit 1 74.1 68.2 5.9 85 1 1952 2004 2003 2004 highest 2 76.6 73.7 2.9 84 2 1976 1941 2003 1941 top-tenth 3 78.1 77.4 0.7 66 20 1976 2023 2003 2000 top-third 1951,1980,2014 4 79.3 79.2 0.1 57 29 1976 2011 2003 2002 normal 5 79.4 79.7 -0.3 51 34 1976 2011 2003 2002 normal 2014 6 78.7 78.9 -0.2 53 32 1976 1998 2003 2002 normal 1995 7 76.9 77.2 -0.3 51 34 1976 2011 2001 2003 normal 1944,1953 8 75.2 75.0 0.2 66 19 1976 2011 2003 2000 top-third 1953,2017 9 72.1 72.6 -0.5 55 30 1940 2011 2003 2000 normal 1948,1986,2013 10 69.8 70.2 -0.4 58 27 1940 2023 2003 2002 top-third 1943,1972,1986 11 67.9 68.4 -0.5 57 28 1940 2023 2003 2002 top-third 1941,1943,1971,2010 12 67.3 67.4 -0.1 63 22 1940 2023 2003 2002 top-third 1990,2015 18 71.1 71.3 -0.2 65 19 1968 2012 2003 2000 top-third 1955,1963,1972 24 66.8 67.4 -0.6 55 29 1961 2017 2002 2003 normal 1944,1950,1953,1963,1995,2009,2010 36 67.1 67.4 -0.3 60 23 1942,1961 2018 2003 2002 top-third 1954,2009 48 66.7 67.4 -0.7 52 30 1961 2018,2019 1997 2003 normal 1953 60 67.1 67.3 -0.2 56 25 1961,1962 2020 1998 2003 top-third 1956