Try and think of a funny inside joke or good time you and your crew had during the winter. Those were most likely the best times, and are usually the best memories, so they're ideal for a title. Funny quotes, sayings, whatever.
I used this idea for my movie. I was at SR one day and Stormin Norman was maning this lift, and I film him. He leans into the lens and screams "LIVIN THE DREAM BABY, IM LIVING THE DREAM!" so after that, I decided to call my movie "Livin' the Dream".