Mount Crested Butte, Colorado has a Subarctic With Cool Summers And Year Around Rainfall climate (Köppen classification: Dfc). Average annual temperatures range from -5.7 °C (low) to 10.4 °C (high). Annual precipitation averages 656.8 Millimeters. 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 | -16.2 °C | -0.9 °C | 71.88 mm |
| February | -14.8 °C | 0.6 °C | 71.12 mm |
| March | -11.2 °C | 4.9 °C | 62.48 mm |
| April | -6.8 °C | 8.2 °C | 60.45 mm |
| May | -2 °C | 13.7 °C | 46.48 mm |
| June | 2.1 °C | 20.3 °C | 22.86 mm |
| July | 5.3 °C | 23.2 °C | 49.53 mm |
| August | 4.7 °C | 21.9 °C | 48.51 mm |
| September | 1 °C | 18.1 °C | 51.05 mm |
| October | -4.2 °C | 11.4 °C | 48.51 mm |
| November | -10.5 °C | 4.3 °C | 58.42 mm |
| December | -15.7 °C | -1.1 °C | 65.53 mm |
| Annual | -5.7 °C | 10.4 °C | 656.82 mm |
| 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 : -28.9°C to -26.1°C |
| Plant Hardiness Zone - 2012 | Zone 4b : -31.7°C to -28.9°C |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | Dfc - Subarctic With Cool Summers And Year Around Rainfall |