Look up the amazing winter of 1783-84 which was entirely driven by a historic volcano in Iceland, Washington's army was stationed in Morristown NJ and they kept a weather diary that stated there was over 12 feet of snow that winter and a total of 30 snowstorms and it got so cold that the ink in their pens froze. A temperature of -16 was recorded in New York City that season in January which beats the official record of -15 in February 1934 by one degree.