1901-2000 Degrees Fahrenheit 1 32.4 33.1 -0.7 47 83 1936 2015 1951 1951 normal 1951,2018 2 28.4 30.8 -2.4 25 105 1937,1949 2015 1950 1951 bottom-third 3 27.7 30.7 -3.0 21 108 1949 1934,2015 1950 1951 bottom-third 4 29.7 32.2 -2.5 21 108 1949 1934 1950 1951 bottom-third 5 33.0 35.2 -2.2 20 109 1949 2015 1950 1951 bottom-third 1923 6 37.1 38.8 -1.7 22 107 1949 2015 1950 1951 bottom-third 7 40.8 42.3 -1.5 19 110 1949 2015 1950 1951 bottom-third 8 43.8 45.1 -1.3 19 110 1949 2015 1950 1951 bottom-third 1933 9 45.4 46.5 -1.1 22 107 1949 2015 1950 1951 bottom-third 1899,1965 10 46.1 47.0 -0.9 26 103 1949 2015 1950 1951 bottom-third 1899,1932,1933 11 46.1 46.8 -0.7 30 99 1949 2015 1950 1951 bottom-third 1923,1932,1933,1973 12 45.0 46.1 -1.1 19 110 1949,1956 2016 1950 1951 bottom-third 1903,1950 18 43.2 43.7 -0.5 34 94 1917 2016 1951 1948 bottom-third 1908,1920,1963 24 45.4 46.1 -0.7 23 105 1950,1956,1957 2016 1951 1951 bottom-third 1899,1951,1972 36 45.3 46.1 -0.8 18 109 1957 2017 1951 1948 bottom-third 1913 48 44.7 46.1 -1.4 1 125 1952 2018 1952 1951 lowest 60 45.1 46.1 -1.0 1 124 1913,1952 2019 1913 1951 lowest 1913