As for OP's question, if you really want you wetsuit to dry, you need leave it in place as warm as possibe. if your leave it outside, the water will just freeze. If you put it on the next day, it will probably be worse than just a wet wetsuit
Thats not really correct, if you want it to dry, put it somewhere as dry as possible.
In the winter, with temperatures down around -30 degrees C , the cold outdoors air is actualy very dry.
When i was a child my mother often hung laundry out to dry in wery cold weather, no problem at all and it dryed faster than it did in the basement, where the humidity was higher.