I keep most of my detailing things in my trunk. It gets way below freezing in Salt Lake. I put a coat of Pinnacle Paste Glaz on a friend's car a week ago and I didnt' have any problem. My windex and QD were frozen but the wax was fine. Even my Klasse was frozen. Keeping your wax cold helps prolong its life so freezing wouldn't be a bad thing. I wouldn't put my wax in the deep freeze, or anything, but I think you are going to be ok with it out in the garage. :xyxthumbs