In December, the weather in Des Moines is typically freezing. Average daily high temperature in December is about zero. On average, Des Moines has 11 cloudy, 8 partly cloudy, 7 sunny, 4 snowy, and 1 rainy day in December. The snowfalls are usually light. December as well as February, March, April, and November is considered the most uncomfortable time to visit Des Moines.