Ruidoso, New Mexico has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 2.5 °C (low) to 19.2 °C (high). Annual precipitation averages 541.3 Millimeters. Ruidoso is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -5.4 °C | 9.9 °C | 25.4 mm |
| February | -4.2 °C | 11.5 °C | 25.15 mm |
| March | -2 °C | 15.1 °C | 21.34 mm |
| April | 0.8 °C | 18.8 °C | 19.3 mm |
| May | 5.1 °C | 23.6 °C | 34.04 mm |
| June | 9.4 °C | 28.5 °C | 35.05 mm |
| July | 11.8 °C | 27.9 °C | 111.51 mm |
| August | 11.3 °C | 26.9 °C | 95.25 mm |
| September | 7.8 °C | 24.3 °C | 77.72 mm |
| October | 2.3 °C | 19.9 °C | 42.93 mm |
| November | -2.2 °C | 14.4 °C | 23.11 mm |
| December | -5.2 °C | 9.8 °C | 30.48 mm |
| Annual | 2.5 °C | 19.2 °C | 541.28 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 7a : -17.8°C to -15°C |
| Plant Hardiness Zone - 2012 | Zone 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |