1. The first recorded snow in New Hampshire history on October 31 occurred in 1804, when a light snowfall of about two inches was reported in Portsmouth.

2. On October 31, 1908, a group of suffragettes from the Women's Political Union of New Hampshire marched through the streets of Concord in protest of their lack of voting rights.

3. In 1959, the first-ever televised debate in the state of New Hampshire took place on October 31 between gubernatorial candidates Wesley Powell and Sherman Adams.

4. On October 31, 1983, Portsmouth Naval Shipyard launched the USS Topeka, a Los Angeles-class nuclear-powered submarine.

5. Trick-or-treating has been a popular Halloween tradition in New Hampshire since at least the 1940s, with many towns hosting community events and offering candy to children on October 31 each year.