On June 5, 1816 a heat wave raised the temperature in Ipswich to 92° but that afternoon a cold front swept across New England and the temperature fell to 43° by the next morning. For the next four days there were severe frosts along the Eastern seaboard, and snow was recorded in some locations. By the 9th of June ice began to form on water left standing outside overnight. Rapid, dramatic temperature swings continued throughout the summer.
Historic Ipswich 