The climate is brilliant throughout the year in Keystone. Winter time sees cold temperatures and plenty of snow -- both of which make for a great skiing season. During the summer, temperatures remain pleasant, with average highs only in the low to mid 70s. Average high temperatures during the winter are in the low to mid 30s. Wintertime lows average just about 0. During the summer, average highs range in the low to mid 70s, while average lows range in the low 40s. Rainfall during the year is relatively even, with most occuring during the July and August. Snowfall peaks in March, with significant snowfalls occuring by late October or early November.

If skiing is your thing, you will definitely want to hit up Keystone during the winter. A late winter or early spring ski travel is definitely worth it. If mountain biking, hiking, or other activities are more your type, then plan a trip to Keystone during the summer, when adventurous activities abound.