1991-2020 Degrees Fahrenheit 1 53.0 55.4 -2.4 29 49 1954 2015 1948 1947 normal 2 50.3 54.4 -4.1 4 73 1948 2015 1948 1949 bottom-tenth 3 47.8 53.3 -5.5 1 76 1949 2015 1949 1948 lowest 4 47.4 52.8 -5.4 1 76 1949 2015 1949 1948 lowest 5 48.7 53.5 -4.8 1 76 1949 2015 1949 1948 lowest 6 50.5 55.0 -4.5 1 76 1949 2015 1949 1948 lowest 7 51.9 56.4 -4.5 1 76 1949 2015 1949 1948 lowest 8 53.2 57.4 -4.2 1 76 1949 2015 1949 1948 lowest 9 54.2 58.1 -3.9 1 75 1949 2015 1949 1948 lowest 10 54.8 58.5 -3.7 1 74 1949 2015 1949 1948 lowest 11 54.9 58.6 -3.7 1 74 1949 2015 1949 1948 lowest 12 54.7 58.5 -3.8 1 74 1949 2015 1949 1948 lowest 18 53.8 57.3 -3.5 1 73 1949,1950 2016 1949 1949 lowest 1950 24 55.7 58.4 -2.7 2 71 1950 2016 1949 1949 bottom-tenth 1956 36 -99 58.4 -99 -99 -99 1950 2017 normal 48 -99 58.4 -99 -99 -99 1952 2018 normal 60 -99 58.3 -99 -99 -99 1953 2018 normal