Carlsbad, New Mexico has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 9.2 °C (low) to 26.1 °C (high). Annual precipitation averages 322.8 Millimeters. Carlsbad is located in USDA Plant Hardiness Zone 8a. The growing season typically runs from the last frost around Mar. 21 - Mar. 31 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -2 °C | 15.1 °C | 11.68 mm |
| February | 0.3 °C | 17.8 °C | 10.41 mm |
| March | 4 °C | 22.4 °C | 12.7 mm |
| April | 8.2 °C | 26.9 °C | 14.22 mm |
| May | 13.8 °C | 31.4 °C | 27.18 mm |
| June | 18.8 °C | 36.2 °C | 32 mm |
| July | 20.8 °C | 36.1 °C | 49.28 mm |
| August | 20.1 °C | 35.3 °C | 45.97 mm |
| September | 16 °C | 31.4 °C | 63.75 mm |
| October | 9.3 °C | 26.4 °C | 26.42 mm |
| November | 2.4 °C | 19.8 °C | 14.99 mm |
| December | -1.7 °C | 14.8 °C | 14.22 mm |
| Annual | 9.2 °C | 26.1 °C | 322.82 mm |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 8a : -12.2°C to -9.4°C |
| Plant Hardiness Zone - 2012 | Zone 8a : -12.2°C to -9.4°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |