Black Rock, New Mexico has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 33.9 °F (low) to 68.5 °F (high). Annual precipitation averages 11.8 Inches. Black Rock is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around May 21 - May 31 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 16.9 °F | 46.9 °F | 0.89 in. |
| February | 20.8 °F | 51.4 °F | 0.89 in. |
| March | 24.9 °F | 58.6 °F | 0.85 in. |
| April | 30.2 °F | 67.2 °F | 0.56 in. |
| May | 38.0 °F | 76.0 °F | 0.63 in. |
| June | 46.6 °F | 87.5 °F | 0.36 in. |
| July | 55.0 °F | 89.9 °F | 1.53 in. |
| August | 54.0 °F | 87.2 °F | 2.3 in. |
| September | 46.3 °F | 81.9 °F | 1.11 in. |
| October | 34.0 °F | 71.2 °F | 0.89 in. |
| November | 23.4 °F | 57.2 °F | 0.72 in. |
| December | 16.7 °F | 47.2 °F | 1.06 in. |
| Annual | 33.9 °F | 68.5 °F | 11.79 in. |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 21 - May 31 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 6a : -10°F to -5°F |
| Plant Hardiness Zone - 2012 | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |