Have you ever had a dream where it's winter?
I have always found those dreams pretty cool (no pun intended ).
First of all, these dreams are usually not cold or anything - it's pretty much room temperature - and you don't have any winter clothes; you're just "there" and experience the landscape.
I have had winter dreams where it has been Christmas, and dreams where I had been snowboarding down an endless mountainside, and they have always had a very unique atmosphere.
Also, if I trip and fall down on the snow then that also usually feels kind of different, everything happens more slowly and when I hit the snow it is usually a more bouncy quality to it, almost like landing on a very soft waterbed or something.