1991-2020 Degrees Fahrenheit 1 9.7 27.0 -17.3 1 123 1977 2006 1977 1976 lowest 2 16.6 29.5 -12.9 2 121 1918 1932 1918 1976 bottom-tenth 3 22.4 33.9 -11.5 1 122 1977 1932 1977 1976 lowest 4 29.0 39.2 -10.2 1 122 1977 1932 1977 1976 lowest 5 36.1 44.8 -8.7 1 122 1977 1932 1977 1976 lowest 6 41.9 49.7 -7.8 1 122 1977 1932 1977 1976 lowest 7 46.9 53.4 -6.5 1 122 1977 1932 1977 1976 lowest 8 50.0 55.8 -5.8 2 121 1918 1932 1918 1976 bottom-tenth 9 51.0 56.7 -5.7 2 121 1918 1932 1918 1976 bottom-tenth 10 51.4 56.4 -5.0 2 121 1918 1932 1918 1976 bottom-tenth 11 50.8 55.1 -4.3 2 121 1918 2013,2017 1918 1976 bottom-tenth 12 49.8 53.2 -3.4 5 117 1918 2013 1918 1976 bottom-tenth 18 49.8 52.0 -2.2 17 104 1905 2017 1970 1976 bottom-third 24 51.0 53.1 -2.1 13 107 1905 2013 1970 1976 bottom-third 36 51.5 53.1 -1.6 24 94 1905 2013,2018 1971 1976 bottom-third 1917,1961,1978,2016 48 51.9 53.1 -1.2 35 81 1905,1906 2019,2020 1973 1976 bottom-third 1914,1951,1961,1983,1984,1985 60 51.8 53.1 -1.3 33 81 1906 2021 1973 1976 bottom-third 1915,1917,1964,1984,1986