1991-2020 Degrees Fahrenheit 1 46.0 50.8 -4.8 4 124 1955 1926 1917 1916 bottom-tenth 2 42.9 48.9 -6.0 1 125 1917 1926 1917 1916 lowest 3 41.6 47.1 -5.5 1 124 1917 1926 1917 1916 lowest 4 40.9 45.8 -4.9 3 121 1950 1934 1917 1916 bottom-tenth 5 40.0 44.7 -4.7 1 121 1917 1934 1917 1916 lowest 6 39.9 44.9 -5.0 1 120 1917 1934 1917 1916 lowest 7 41.4 46.2 -4.8 1 120 1917 1934,2015 1917 1916 lowest 8 43.8 48.4 -4.6 1 119 1917 2015 1917 1916 lowest 9 46.3 50.6 -4.3 1 117 1917 2015 1917 1916 lowest 10 47.9 52.5 -4.6 1 117 1917 2015 1917 1916 lowest 11 49.0 53.4 -4.4 1 117 1917 2016 1917 1916 lowest 12 49.1 53.7 -4.6 1 116 1917 2016 1917 1916 lowest 18 46.9 50.8 -3.9 1 113 1917 2016 1917 1916 lowest 24 50.3 53.7 -3.4 1 110 1917 2016 1917 1916 lowest 36 50.9 53.6 -2.7 1 104 1912,1913,1917 2017 1913 1913 lowest 1912,1913 48 -99 53.6 -99 -99 -99 1913 2018 normal 60 -99 53.6 -99 -99 -99 1950 2019 normal