Mountainair, New Mexico has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 37.1 °F (low) to 67.8 °F (high). Annual precipitation averages 14.3 Inches. Mountainair is located in USDA Plant Hardiness Zone 7a. 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 | 20.7 °F | 47.0 °F | 0.68 in. |
| February | 23.6 °F | 51.6 °F | 0.63 in. |
| March | 28.6 °F | 59.5 °F | 0.9 in. |
| April | 33.8 °F | 67.3 °F | 0.61 in. |
| May | 41.9 °F | 76.3 °F | 0.83 in. |
| June | 51.2 °F | 87.0 °F | 0.9 in. |
| July | 55.8 °F | 87.7 °F | 2.51 in. |
| August | 54.7 °F | 85.2 °F | 2.47 in. |
| September | 48.2 °F | 79.3 °F | 1.93 in. |
| October | 37.7 °F | 68.9 °F | 1.45 in. |
| November | 27.6 °F | 56.5 °F | 0.7 in. |
| December | 21.1 °F | 46.7 °F | 0.72 in. |
| Annual | 37.1 °F | 67.8 °F | 14.33 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| 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 | Severe Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |