1. On January 31, 1865, the 18th Amendment of the United States Constitution was ratified, prohibiting the manufacture, sale, or transportation of intoxicating liquors within the United States. New Hampshire was one of the first states to ratify the amendment, joining on March 31, 1919.

2. In 1953, on January 31, the New Hampshire General Court elected Wesley Powell to fill the vacancy in the U.S. Senate left by Styles Bridges. Powell served as senator until the end of Bridges' term in 1954.

3. On January 31, 1977, a major snowstorm hit New Hampshire, dumping up to 30 inches in some areas. The storm caused a state of emergency and brought transportation and power to a standstill.

4. In 1990, on January 31, the New Hampshire Supreme Court issued a ruling in State v. Ball which established the "Ballot Law Commission," a body responsible for resolving disputes over the validity of election results.

5. On January 31, 2011, Granite Staters celebrated the 75th anniversary of the New Hampshire Snowmobile Association, founded in 1936. New Hampshire has over 7,000 miles of snowmobile trails, making it a popular winter recreation destination.