Crested Butte, Colorado has a Subarctic With Cool Summers And Year Around Rainfall climate (Köppen classification: Dfc). Average annual temperatures range from 18.9 °F (low) to 51.1 °F (high). Annual precipitation averages 26.2 Inches. Crested Butte is located in USDA Plant Hardiness Zone 4a. The growing season typically runs from the last frost around Jun. 11 - Jun. 20 through the first frost around Aug. 1 - Aug. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -4.6 °F | 27.6 °F | 2.84 in. |
| February | -0.7 °F | 31.6 °F | 2.84 in. |
| March | 8.3 °F | 40.0 °F | 2.5 in. |
| April | 19.0 °F | 47.9 °F | 2.44 in. |
| May | 27.8 °F | 58.3 °F | 1.8 in. |
| June | 33.9 °F | 70.2 °F | 0.99 in. |
| July | 40.2 °F | 75.5 °F | 1.99 in. |
| August | 39.2 °F | 73.1 °F | 2.01 in. |
| September | 32.1 °F | 66.3 °F | 2.07 in. |
| October | 22.9 °F | 54.3 °F | 1.93 in. |
| November | 10.8 °F | 40.1 °F | 2.26 in. |
| December | -2.2 °F | 28.1 °F | 2.48 in. |
| Annual | 18.9 °F | 51.1 °F | 26.15 in. |
| Average First Frost Date | Aug. 1 - Aug. 10 |
| Average Last Frost Date | Jun. 11 - Jun. 20 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 4a : -30°F to -25°F |
| Plant Hardiness Zone - 2012 | Zone 3b : -35°F to -30°F |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | Dfc - Subarctic With Cool Summers And Year Around Rainfall |