• February 1 – The First Special Service Force arrived at Anzio.
• February 7 – A Great Northern train derailed on a broken track 15 miles east of Great Falls. A porter and 22 soldiers were treated at hospital at the Great Falls Army Air Base.
• February 14 – A dance in East Helena turned into a brawl between juveniles, which continued at the police station. A 50-year-old barn at the State Hospital at Warm Springs burned to the ground, killing four horses.
• February 15 – A blizzard brought sub-zero temperatures to the state.
• February 17 – U.S. Navy planes and ships began a two day raid on the Japanese base at Truk Atoll.
• February 19 – U.S. forces landed on Eniwetok.
• February 22 – The ACM clubhouse and bowling alley on Smelter Hill in Great Falls were destroyed by fire, causing $50,000 damage.
• February 28 – The U.S. Third Division repelled a German attack at Anzio.