| 2023 Hardiness Zone: | Zone 5a: -20°F to -15°F Zone 5b: -15°F to -10°F Zone 4b: -25°F to -20°F Zone 6a: -10°F to -5°F Zone 4a: -30°F to -25°F | |
| 2012 Hardiness Zone: | Zone 5a: -20°F to -15°F Zone 5b: -15°F to -10°F Zone 4b: -25°F to -20°F Zone 6a: -10°F to -5°F Zone 4a: -30°F to -25°F | |
| 1990 Hardiness Zone: | Zone 4a: -30F to -25F | |
| Average First Frost Date: | Sep.1 - Sep. 10 | |
| Average Last Frost Date: | Jun. 11 - Jun. 20 | |
| Koppen-Geiger Climate Zone: | Dfc - Subarctic With Cool Summers And Year Around Rainfall | |
| Ecoregion: | 21d - Foothills and Shrublands | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 81611 - Aspen, CO | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 7 | 10 | 16 | 24 | 32 | 38 | 45 | 43 | 37 | 29 | 17 | 8 | 25 |
| Avg Max Temp (°F) | 32 | 38 | 43 | 52 | 64 | 74 | 80 | 78 | 70 | 60 | 44 | 34 | 56 |
| Avg Precip (In.) | 1.24 | 1.21 | 1.14 | .84 | 1.26 | .99 | 1.51 | 1.38 | 1.44 | 1.73 | .97 | 1.07 | 14.76 |