1901-2000 Degrees Fahrenheit 1 39.2 39.5 -0.3 60 70 1960 2012 1980 1979 normal 1956 2 35.2 34.5 0.7 72 58 1978 2012 1980 1977 normal 3 31.1 31.8 -0.7 50 80 1978 2012 1980 1976 normal 2010 4 31.1 31.5 -0.4 49 80 1978 2012 1980 1976 normal 1914,1924 5 32.9 33.4 -0.5 47 82 1978 2012 1980 1976 normal 6 35.8 36.8 -1.0 35 94 1978 2012 1980 1976 bottom-third 1915,1917 7 40.3 41.0 -0.7 37 92 1977 2012,2017 1980 1976 bottom-third 1924,1930 8 44.7 44.9 -0.2 51 78 1977 2017 1980 1976 normal 1947,2003 9 48.3 48.2 0.1 66 63 1977 2012 1980 1976 normal 1934,1948,1988,2003 10 50.3 50.4 -0.1 55 74 1977 2012 1980 1976 normal 1920,1948 11 51.4 51.4 0.0 59 70 1918,1977 2012 1980 1976 normal 1946,1985,2003 12 51.2 51.3 -0.1 51 78 1918 2012 1980 1976 normal 1896,1944,1947,1960,1965 18 46.0 46.5 -0.5 38 90 1905 2017 1980 1976 bottom-third 1903 24 50.6 51.3 -0.7 24 104 1905,1978 2017 1980 1976 bottom-third 1925,1926,1960,1982 36 50.4 51.3 -0.9 13 114 1979 2018 1980 1977 bottom-tenth 1919,1920,1963,1982 48 50.2 51.3 -1.1 6 120 1980 2019 1980 1978 bottom-tenth 1918 60 49.7 51.3 -1.6 1 124 1981 2020 1981 1980 lowest