Most ground-installed solar lights are acceptable for use in normal temperature conditions. But for areas of the country that do experience snowfall, ground-installed solar lights should be removed, battery disconnected, and stored before winter.
Practical reasons for removing solar lights before winter include; shorter days (less sun to charge the solar lights), deep snow, and the use of shovels or snow blowers, which would damage solar lights.
The exception to this rule may include Wall Mounted Security solar lights or Solar lights for Flagpoles located high above the wet snow-covered ground.