1. On January 13, 1919, Montana ratified the 18th Amendment to the U.S. Constitution, which prohibited the manufacture, sale, and transportation of alcoholic beverages. This led to the rise of organized crime and bootlegging in the state.

2. On January 13, 1985, the temperature in Loma, Montana, dropped to a frigid -70 degrees Fahrenheit (-57 degrees Celsius), the coldest temperature ever recorded in the state.

3. On January 13, 1879, the Fort Shaw Indian School in Montana opened its doors to its first students. The school was established to assimilate Native American children into white culture and language.

4. On January 13, 1943, a B-17 bomber crashed near Billings, Montana, killing all 10 crew members on board. The wreckage was discovered in 2003, and a memorial now stands at the crash site.

5. On January 13, 1912, Montana's state capitol building was dedicated in Helena. The building, which cost $2.5 million to construct, is still in use today and is listed on the National Register of Historic Places.