It's still a wise idea to bring your car-care chemicals into a heated or semi-controlled area from an unheated garage where it will be below freezing (32°F) for any length of time.
The only product I know of that REALLY goes bad is Aerospace 303 Protectant. If it freezes, it seems to develop a bad body odor-type smell. This observation is from others experience within this forum, BUT I did notice this "odor phenomenon" when I purchased some from a local RV dealer. I returned it and pointed this out to the manager, had him smell it, and obviously he said it wasn't that bad. Needless to say, it went back into inventory on the shelf. Now I sniff the bottles before I purchase them locally. Yes, it looks weird, but it's my personal "quality control" check.
On the other hand, carnauba waxes like to be cool, but not cold. There are many car-care affectionados who keep there high-end carnauba waxes in mini-'fridges in the garage or shop during warmer weather. As any well-read or long-time Autopian knows, you can spend (ALOT!) more on the wax that what the mini-'fridge is worth.