Westcliffe, Colorado has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 26.1 °F (low) to 58.5 °F (high). Annual precipitation averages 13.5 Inches. Westcliffe 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 | 7.9 °F | 38.2 °F | 0.46 in. |
| February | 11.3 °F | 40.3 °F | 0.59 in. |
| March | 19.5 °F | 49.0 °F | 1.06 in. |
| April | 24.9 °F | 55.6 °F | 1.56 in. |
| May | 33.1 °F | 64.8 °F | 1.52 in. |
| June | 40.3 °F | 75.9 °F | 0.76 in. |
| July | 45.1 °F | 80.2 °F | 2.39 in. |
| August | 43.5 °F | 77.8 °F | 2.04 in. |
| September | 37.0 °F | 72.2 °F | 0.91 in. |
| October | 26.2 °F | 61.3 °F | 0.97 in. |
| November | 16.4 °F | 48.2 °F | 0.65 in. |
| December | 7.7 °F | 38.2 °F | 0.55 in. |
| Annual | 26.1 °F | 58.5 °F | 13.46 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 5a : -20°F to -15°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |