Weather information for the Keystone Resort area is provided below. Average temperatures, climate details and current forecasts are included.
Climate
At over 9,000 feet above sea level, the Keystone area has a cool climate. Summer temperatures are often nice, but cold spells dropping into the 40s can happen even in July. Winter nights can sometimes drop well below zero. Dressing in layers is recommended.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | ||
| Avg. High | 31 | 34 | 39 | 46 | 56 | 67 | 73 | 71 | 64 | 54 | 39 | 32 | |
| Avg. Low | 0 | 3 | 11 | 18 | 27 | 34 | 39 | 38 | 31 | 22 | 11 | 3 | |
| Precipitation | 0.9 | 1.0 | 1.1 | 1.2 | 1.5 | 1.2 | 1.8 | 1.7 | 1.3 | 0.8 | 0.9 | 0.8 | |




