San Antonio, New Mexico has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 40.3 °F (low) to 76.2 °F (high). Annual precipitation averages 8.8 Inches. San Antonio 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 | 21.1 °F | 54.2 °F | 0.29 in. |
| February | 24.9 °F | 60.4 °F | 0.32 in. |
| March | 32.9 °F | 68.4 °F | 0.32 in. |
| April | 37.7 °F | 77.3 °F | 0.34 in. |
| May | 46.8 °F | 85.9 °F | 0.41 in. |
| June | 55.3 °F | 95.7 °F | 0.42 in. |
| July | 61.3 °F | 96.0 °F | 1.64 in. |
| August | 60.0 °F | 93.5 °F | 1.72 in. |
| September | 52.4 °F | 88.1 °F | 1.33 in. |
| October | 39.4 °F | 77.9 °F | 0.82 in. |
| November | 30.3 °F | 63.7 °F | 0.51 in. |
| December | 21.3 °F | 53.5 °F | 0.66 in. |
| Annual | 40.3 °F | 76.2 °F | 8.78 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 7b : 5°F to 10°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |