1991-2020 Degrees Fahrenheit 1 54.9 58.4 -3.5 20 76 1962 2018 1930 1931 bottom-third 2 52.5 54.4 -1.9 27 69 1955 1934 1929 1931 bottom-third 1972 3 49.2 51.2 -2.0 26 70 1955 1934 1932 1931 bottom-third 1933,2019 4 45.3 48.0 -2.7 13 83 1955 1934 1929 1931 bottom-third 1954 5 42.3 45.5 -3.2 17 79 1950 1934 1930 1931 bottom-third 6 40.1 43.6 -3.5 11 84 1950 1934 1929 1931 bottom-third 1969 7 39.1 43.3 -4.2 8 87 1937 1934 1930 1931 bottom-tenth 8 40.0 44.3 -4.3 2 93 1950 1934 1930 1931 bottom-tenth 1929,1930 9 42.1 46.5 -4.4 2 93 1950 1934 1930 1931 bottom-tenth 1929,1930 10 44.9 49.1 -4.2 4 91 1950 1992,2015 1929 1931 bottom-tenth 1986 11 47.4 51.3 -3.9 5 90 1949,1950 2015 1930 1931 bottom-tenth 12 48.8 52.5 -3.7 6 89 1950 2016 1930 1931 bottom-tenth 18 47.0 49.5 -2.5 15 79 1930,1950 2016 1930 1931 bottom-third 1945 24 49.8 52.5 -2.7 11 83 1950 2016 1931 1932 bottom-third 1955 36 49.4 52.5 -3.1 5 88 1950 2016 1931 1932 bottom-tenth 48 49.2 52.4 -3.2 1 91 1932 2018 1932 1932 lowest 60 -99 52.4 -99 -99 -99 1933 2018 normal