1. In 1993, Wisconsin experienced a record-breaking snowstorm on May 5. Dubbed the "Storm of the Century," the storm dumped up to 2 feet of snow in some parts of the state, causing widespread power outages and damage.

2. May 5, 1960, marked the opening day of the new Milwaukee County Stadium. The stadium served as the home of the Milwaukee Braves and later the Milwaukee Brewers until its closure in 2000.

3. On May 5, 1933, the Civilian Conservation Corps (CCC) was established in Wisconsin. The CCC was a federal program aimed at providing employment and skills training to young men during the Great Depression.

4. In 1907, Wisconsin became the first state to declare Labor Day a legal holiday. The holiday was established to honor the contributions of the labor movement to American society.

5. May 5, 1862, marked the beginning of the Battle of Williamsburg during the American Civil War. Wisconsin soldiers played a significant role in the battle, fighting as part of the Union army under General George B. McClellan.