Gallup, New Mexico has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 34 °F (low) to 66.3 °F (high). Annual precipitation averages 12.7 Inches. Gallup is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around Jun. 1 - Jun. 10 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 16.2 °F | 45.0 °F | 0.9 in. |
| February | 20.5 °F | 49.2 °F | 0.99 in. |
| March | 24.9 °F | 56.9 °F | 0.88 in. |
| April | 30.5 °F | 64.6 °F | 0.59 in. |
| May | 38.9 °F | 73.6 °F | 0.85 in. |
| June | 47.5 °F | 85.4 °F | 0.26 in. |
| July | 55.6 °F | 87.7 °F | 1.6 in. |
| August | 54.4 °F | 85.1 °F | 2.27 in. |
| September | 46.3 °F | 79.1 °F | 1.48 in. |
| October | 33.9 °F | 68.5 °F | 0.9 in. |
| November | 23.4 °F | 55.1 °F | 0.72 in. |
| December | 16.3 °F | 45.2 °F | 1.24 in. |
| Annual | 34 °F | 66.3 °F | 12.68 in. |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | Jun. 1 - Jun. 10 |
| 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 | Extreme Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |