Blanco, New Mexico has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 37 °F (low) to 68.1 °F (high). Annual precipitation averages 8.9 Inches. Blanco is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 18.2 °F | 43.4 °F | 0.74 in. |
| February | 22.3 °F | 49.8 °F | 0.66 in. |
| March | 28.2 °F | 59.6 °F | 0.72 in. |
| April | 33.9 °F | 68.1 °F | 0.65 in. |
| May | 42.5 °F | 77.6 °F | 0.61 in. |
| June | 51.6 °F | 86.6 °F | 0.26 in. |
| July | 59.5 °F | 92.7 °F | 0.86 in. |
| August | 57.4 °F | 89.8 °F | 1.12 in. |
| September | 49.0 °F | 82.6 °F | 1.06 in. |
| October | 36.3 °F | 68.5 °F | 0.85 in. |
| November | 26.3 °F | 54.8 °F | 0.67 in. |
| December | 18.7 °F | 43.8 °F | 0.7 in. |
| Annual | 37 °F | 68.1 °F | 8.9 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 7a : 0°F to 5°F |
| Plant Hardiness Zone - 2012 | Zone 6b : -5°F to 0°F |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |