Mount Crested Butte, Colorado has a Subarctic With Cool Summers And Year Around Rainfall climate (Köppen classification: Dfc). Average annual temperatures range from 21.8 °F (low) to 50.7 °F (high). Annual precipitation averages 25.9 Inches. Mount Crested Butte is located in USDA Plant Hardiness Zone 5a. The growing season typically runs from the last frost around Jun. 1 - Jun. 10 through the first frost around Sep.1 - Sep. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 2.9 °F | 30.3 °F | 2.83 in. |
| February | 5.4 °F | 33.0 °F | 2.8 in. |
| March | 11.9 °F | 40.8 °F | 2.46 in. |
| April | 19.8 °F | 46.8 °F | 2.38 in. |
| May | 28.4 °F | 56.6 °F | 1.83 in. |
| June | 35.7 °F | 68.5 °F | 0.9 in. |
| July | 41.6 °F | 73.7 °F | 1.95 in. |
| August | 40.4 °F | 71.4 °F | 1.91 in. |
| September | 33.8 °F | 64.6 °F | 2.01 in. |
| October | 24.4 °F | 52.6 °F | 1.91 in. |
| November | 13.1 °F | 39.8 °F | 2.3 in. |
| December | 3.8 °F | 30.1 °F | 2.58 in. |
| Annual | 21.8 °F | 50.7 °F | 25.86 in. |
| Average First Frost Date | Sep.1 - Sep. 10 |
| Average Last Frost Date | Jun. 1 - Jun. 10 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 5a : -20°F to -15°F |
| Plant Hardiness Zone - 2012 | Zone 4b : -25°F to -20°F |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | Dfc - Subarctic With Cool Summers And Year Around Rainfall |