Winter has fully arrived and both my compost pile and I are frozen. Since your pile freezes during the winter and goes dormant, the food scraps tend to build up uncovered.
One trick I learned was to save a bag or two of leaves from the fall. As my layer of food scraps build up on top of the pile, I then spread a layer of leaves over it. Based on how long winter lasts I can have many alternating layers of food scraps and leaves.
Once spring arrives and the compost pile warms up, having the leaves layered with the food scraps will help the materials break down until you can turn your pile. Just remember as you look outside at the frozen winter wonderland and your frozen compost pile, spring is only a few months away.