Santa Rosa, New Mexico has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 5.7 °C (low) to 23.2 °C (high). Annual precipitation averages 354.3 Millimeters. Santa Rosa is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -4.3 °C | 12.4 °C | 10.92 mm |
| February | -2.9 °C | 14.6 °C | 9.4 mm |
| March | 0.4 °C | 18.8 °C | 22.1 mm |
| April | 4.1 °C | 23.1 °C | 20.32 mm |
| May | 9.6 °C | 27.9 °C | 31.24 mm |
| June | 14.6 °C | 33.1 °C | 37.85 mm |
| July | 17.2 °C | 33.9 °C | 53.34 mm |
| August | 16.3 °C | 32.8 °C | 56.9 mm |
| September | 12.4 °C | 29.2 °C | 44.7 mm |
| October | 5.7 °C | 23.6 °C | 32.77 mm |
| November | -0.3 °C | 17.2 °C | 16.76 mm |
| December | -4.1 °C | 12.1 °C | 18.03 mm |
| Annual | 5.7 °C | 23.2 °C | 354.33 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 7a : -17.8°C to -15°C |
| Plant Hardiness Zone - 2012 | Zone 7a : -17.8°C to -15°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |