We have had melting and freezing weather the last few weeks where it is warm enough during the day (and the sun is out long enough FINALLY) to start some thawing. As I was loading kids into the vehicle I noticed the side of the van - which looked dirty from a distance - was actually covered in small ice particles. It was very cool to look at close up. Obviously the air is still cold enough to freeze the water as I am driving and it must be blowing as it dries. That's my very scientific opinion of course.