Watrous, New Mexico has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 0.6 °C (low) to 19.5 °C (high). Annual precipitation averages 415.6 Millimeters. Watrous is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -9 °C | 9.2 °C | 11.68 mm |
| February | -7.6 °C | 10.9 °C | 11.18 mm |
| March | -4.3 °C | 14.8 °C | 19.3 mm |
| April | -1.1 °C | 18.5 °C | 20.07 mm |
| May | 4.1 °C | 23.1 °C | 37.34 mm |
| June | 8.8 °C | 28.7 °C | 44.2 mm |
| July | 11.7 °C | 29.9 °C | 81.03 mm |
| August | 10.9 °C | 28.6 °C | 76.2 mm |
| September | 6.8 °C | 25.7 °C | 55.88 mm |
| October | 0.6 °C | 20.7 °C | 28.7 mm |
| November | -5.1 °C | 14.4 °C | 14.73 mm |
| December | -8.7 °C | 9.2 °C | 15.24 mm |
| Annual | 0.6 °C | 19.5 °C | 415.55 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 6a : -23.3°C to -20.6°C |
| Plant Hardiness Zone - 2012 | Zone 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |