Alamillo, New Mexico has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 41.7 °F (low) to 74.3 °F (high). Annual precipitation averages 8.9 Inches. Alamillo is located in USDA Plant Hardiness Zone 7b. 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 | 21.6 °F | 52.6 °F | 0.31 in. |
| February | 25.9 °F | 58.8 °F | 0.25 in. |
| March | 33.0 °F | 66.8 °F | 0.47 in. |
| April | 39.7 °F | 74.5 °F | 0.39 in. |
| May | 49.0 °F | 83.8 °F | 0.49 in. |
| June | 58.2 °F | 93.5 °F | 0.4 in. |
| July | 63.9 °F | 94.4 °F | 1.5 in. |
| August | 62.0 °F | 91.8 °F | 1.84 in. |
| September | 54.4 °F | 86.0 °F | 1.49 in. |
| October | 41.2 °F | 75.2 °F | 0.84 in. |
| November | 29.6 °F | 62.3 °F | 0.44 in. |
| December | 21.8 °F | 51.9 °F | 0.48 in. |
| Annual | 41.7 °F | 74.3 °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 7b : 5°F to 10°F |
| Plant Hardiness Zone - 2012 | Zone 7a : 0°F to 5°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |