I am going to order this wax http://www.tognar.com/swix-universal-wax-white-cold-warm-180gm-bulk/ , but I am not sure which temp to go with. It says cold wax is for below 20, warm above 20. I ski in the cascades in Washington State. I would say 20 deg is right about in the middle. Days often start out in the low-mid teens, then rise to mid to upper 20's. If anything it is more commonly 20-30, but when I go on ski trips out of state, they are commonly less than 20... :P
I guess I am wondering which one is better out of its temp range, or does it really make any difference at all?