In March, the weather in Aspen is typically cold. Average daily high temperature in March is about 3 degrees above zero. On average, Aspen has 12 sunny, 9 snowy, 8 partly cloudy, 1 rainy, and 1 cloudy day in March. The snowfalls are usually moderate. March as well as February, April, May, and August is considered the most uncomfortable time to visit Aspen.