Clayton, New Mexico has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 39.1 °F (low) to 68.3 °F (high). Annual precipitation averages 16.9 Inches. Clayton is located in USDA Plant Hardiness Zone 6b. 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 | 20.4 °F | 48.7 °F | 0.48 in. |
| February | 22.1 °F | 51.6 °F | 0.34 in. |
| March | 29.0 °F | 59.8 °F | 0.98 in. |
| April | 36.0 °F | 66.8 °F | 1.2 in. |
| May | 46.0 °F | 75.8 °F | 1.81 in. |
| June | 55.7 °F | 85.7 °F | 2.1 in. |
| July | 60.4 °F | 89.2 °F | 2.94 in. |
| August | 59.1 °F | 86.5 °F | 3.15 in. |
| September | 51.8 °F | 80.3 °F | 1.52 in. |
| October | 39.5 °F | 69.6 °F | 1.2 in. |
| November | 28.6 °F | 57.7 °F | 0.61 in. |
| December | 20.9 °F | 48.3 °F | 0.52 in. |
| Annual | 39.1 °F | 68.3 °F | 16.85 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 6b : -5°F to 0°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 |