Aluminum bats are less likely to crack in cold weather. They can bend and dent, but are less likely to crack. When it's cold the ball becomes more dense making impact on a bat much more extreme. No manufarcturer recommends cold weather use below 50deg. Late fall and early spring my daughter always has a sacrificial Alloy bat in the bag. I pick up older models on eBay that are brand new for $30-50.