Crestone, Colorado has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from -1.6 °C (low) to 15.2 °C (high). Annual precipitation averages 318.5 Millimeters. Crestone is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around Jun. 21 - Jun. 30 through the first frost around Sep.11 - Sep. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -12.9 °C | 1.9 °C | 11.94 mm |
| February | -10.1 °C | 4.7 °C | 12.7 mm |
| March | -5.7 °C | 10.1 °C | 24.89 mm |
| April | -2.5 °C | 14.4 °C | 29.21 mm |
| May | 2.2 °C | 19.7 °C | 29.97 mm |
| June | 6.9 °C | 25.8 °C | 20.07 mm |
| July | 9.6 °C | 27.9 °C | 52.07 mm |
| August | 8.7 °C | 26.6 °C | 50.04 mm |
| September | 5 °C | 23.1 °C | 32 mm |
| October | -0.9 °C | 16.6 °C | 24.89 mm |
| November | -7.1 °C | 8.7 °C | 16.76 mm |
| December | -12.4 °C | 2.3 °C | 13.97 mm |
| Annual | -1.6 °C | 15.2 °C | 318.51 mm |
| Average First Frost Date | Sep.11 - Sep. 20 |
| Average Last Frost Date | Jun. 21 - Jun. 30 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 5b : -26.1°C to -23.3°C |
| Plant Hardiness Zone - 2012 | Zone 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |