December in Birch Run is the windiest month of the year. In December, the weather in Birch Run is typically freezing. Average daily high temperature in December is about zero. On average, Birch Run has 14 cloudy, 10 snowy, 4 rainy, and 3 sunny days in December. The snowfalls are usually moderate. December as well as March, April, October, and November is considered the most uncomfortable time to visit Birch Run.