January in Des Moines is the snowiest, the windiest, the cloudiest, and the most freezing month of the year. In January, the weather in Des Moines is typically freezing. Average daily high temperature in January is about 3 degrees below zero. On average, Des Moines has 16 cloudy, 5 snowy, 5 sunny, and 5 partly cloudy days in January. The snowfalls are usually light.