Ground does not get frozen here until it gets ccccold! We are having September temperatures in November now. Wish I could sign up some more work to be honest with you, but mostly everyone has gone away for the season. LED lamps do create heat, certainly enough to melt snowfall in most climates as it accumulates. My line of LED MR16 lamps ( www.ledlightsdirect.com ) operate at about 42 Degrees Celsius inside sealed fixtures. This is enough heat to melt most snowfall as it accumulates. In very heavy snow conditions the fixtures do get covered but over the course of a couple of nights operation, they melt away and continue doing their job. Even with halogen lamps the fixtures will get completely covered in high snow load areas. It is not uncommon for us to dig out fixtures here after significant snowfall, no matter what lamps are installed.