| 2023 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 5a: -20°F to -15°F Zone 3b: -35°F to -30°F Zone 4a: -30°F to -25°F Zone 4b: -25°F to -20°F Zone 5b: -15°F to -10°F |
| 2012 Hardiness Zone: | Zone 3b: -35°F to -30°F Zone 5b: -15°F to -10°F Zone 4b: -25°F to -20°F Zone 5a: -20°F to -15°F Zone 4a: -30°F to -25°F |
| 1990 Hardiness Zone: | Zone 3a: -40F to -35F |
| Average First Frost Date: | Aug. 21 - Aug. 31 |
| Average Last Frost Date: | Jun. 21 - Jun. 30 |
| Koppen-Geiger Climate Zone: | Dfc - Subarctic With Cool Summers And Year Around Rainfall |
| Ecoregion: | 21i - Sagebrush Parks |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 81224 - Crested Butte, CO | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | -5 | -2 | 7 | 17 | 28 | 33 | 39 | 38 | 31 | 22 | 10 | -2 | 18 |
| Avg Max Temp (°F) | 24 | 29 | 36 | 44 | 56 | 68 | 74 | 72 | 65 | 54 | 38 | 27 | 49 |
| Avg Precip (In.) | 2.51 | 2.42 | 2.1 | 1.92 | 1.63 | 1.19 | 1.77 | 1.89 | 1.87 | 1.71 | 2.02 | 2.16 | 23.18 |