Pierce, Colorado has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 33.5 °F (low) to 62.9 °F (high). Annual precipitation averages 13.4 Inches. Pierce is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 13.9 °F | 41.2 °F | 0.3 in. |
| February | 15.8 °F | 43.2 °F | 0.33 in. |
| March | 24.1 °F | 53.7 °F | 0.89 in. |
| April | 31.3 °F | 60.3 °F | 1.6 in. |
| May | 41.5 °F | 69.2 °F | 2.43 in. |
| June | 51.0 °F | 81.3 °F | 1.74 in. |
| July | 56.3 °F | 87.8 °F | 1.58 in. |
| August | 53.9 °F | 85.4 °F | 1.46 in. |
| September | 45.1 °F | 77.6 °F | 1.13 in. |
| October | 33.0 °F | 63.6 °F | 1.04 in. |
| November | 22.2 °F | 50.4 °F | 0.52 in. |
| December | 14.0 °F | 40.9 °F | 0.35 in. |
| Annual | 33.5 °F | 62.9 °F | 13.37 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5b : -15°F to -10°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 |