Count the number of days with sun and snow in April and May. The advantage of late-season skiing is that there is usually a strong foundation to gather any more spring snow that may fall—March is Colorado's snowiest month. This means lift-access powder turns if you visit Aspen before April 20. If you can stand the cold, there's great skiing from about mid-February through early March. 2. In fact, you can ski in Aspen in May if you want to catch some of the summer crowds away from the slopes. There are typically two weeks in May when the weather is nice enough for this activity, and both weeks include Memorial Day. The best time to go is between Friday and Monday because most schools have finished their semesters by then and college students like to have one last week of freedom before they head back to school. 3. The National Ski Patrol Association reports that there were actually more than 100 deaths during May over the past few decades. This is mostly due to accidents caused by people driving while intoxicated or falling down stairs. However, some skiers die every year during these months while others survive thanks to modern medicine. 4. The most common cause of death during May is alcohol poisoning. The large amount of alcohol consumed by skiers and riders during late-season trips makes them vulnerable to it.