Black Rock, New Mexico has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 1.1 °C (low) to 20.3 °C (high). Annual precipitation averages 299.5 Millimeters. 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 | -8.4 °C | 8.3 °C | 22.61 mm |
| February | -6.2 °C | 10.8 °C | 22.61 mm |
| March | -3.9 °C | 14.8 °C | 21.59 mm |
| April | -1 °C | 19.6 °C | 14.22 mm |
| May | 3.3 °C | 24.4 °C | 16 mm |
| June | 8.1 °C | 30.8 °C | 9.14 mm |
| July | 12.8 °C | 32.2 °C | 38.86 mm |
| August | 12.2 °C | 30.7 °C | 58.42 mm |
| September | 7.9 °C | 27.7 °C | 28.19 mm |
| October | 1.1 °C | 21.8 °C | 22.61 mm |
| November | -4.8 °C | 14 °C | 18.29 mm |
| December | -8.5 °C | 8.4 °C | 26.92 mm |
| Annual | 1.1 °C | 20.3 °C | 299.46 mm |
| 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 : -23.3°C to -20.6°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |