South Valley, New Mexico has a Cold Desert Climate climate (Köppen classification: BWk). Average annual temperatures range from 4.9 °C (low) to 22.6 °C (high). Annual precipitation averages 227.9 Millimeters. South Valley is located in USDA Plant Hardiness Zone 7b. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -5.6 °C | 10.6 °C | 9.65 mm |
| February | -3.6 °C | 13.8 °C | 11.68 mm |
| March | -0.1 °C | 18.4 °C | 13.21 mm |
| April | 3.8 °C | 22.5 °C | 14.48 mm |
| May | 8.3 °C | 27.3 °C | 10.92 mm |
| June | 13.8 °C | 33.2 °C | 13.21 mm |
| July | 16.9 °C | 34.1 °C | 36.07 mm |
| August | 16.6 °C | 32.8 °C | 35.31 mm |
| September | 11.4 °C | 29.3 °C | 31.5 mm |
| October | 4.7 °C | 22.9 °C | 23.37 mm |
| November | -1.8 °C | 15.8 °C | 13.97 mm |
| December | -5.4 °C | 10 °C | 14.48 mm |
| Annual | 4.9 °C | 22.6 °C | 227.85 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 7b : -15°C to -12.2°C |
| Plant Hardiness Zone - 2012 | Zone 7b : -15°C to -12.2°C |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | BWk - Cold Desert Climate |