Generally speaking, most in ground pool lights are designed to withstand winter’s harsh temperatures. The only important thing to remember about in ground pool lights is to never turn the pool light on during those winter months, as it could cause it to short out. The same goes go above ground pool lights that are built into the side of the pool wall. If you own an easily removable above ground pool light, there is a chance that it will not fair as well against nature’s coldest elements. It is advisable to remove such a pool light and store it indoors for the winter.