Lake Arthur, New Mexico has a Cold Desert Climate climate (Köppen classification: BWk). Average annual temperatures range from 46.4 °F (low) to 77.7 °F (high). Annual precipitation averages 11.5 Inches. Lake Arthur is located in USDA Plant Hardiness Zone 7b. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 26.1 °F | 57.6 °F | 0.36 in. |
| February | 30.1 °F | 62.8 °F | 0.28 in. |
| March | 37.1 °F | 70.8 °F | 0.48 in. |
| April | 44.4 °F | 79.1 °F | 0.42 in. |
| May | 54.6 °F | 87.4 °F | 1.13 in. |
| June | 64.1 °F | 95.9 °F | 0.96 in. |
| July | 68.0 °F | 95.7 °F | 1.83 in. |
| August | 66.6 °F | 94.3 °F | 1.56 in. |
| September | 58.9 °F | 87.5 °F | 2.13 in. |
| October | 46.5 °F | 78.0 °F | 1.23 in. |
| November | 34.2 °F | 66.0 °F | 0.56 in. |
| December | 26.7 °F | 57.2 °F | 0.56 in. |
| Annual | 46.4 °F | 77.7 °F | 11.5 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 7b : 5°F to 10°F |
| Plant Hardiness Zone - 2012 | Zone 7a : 0°F to 5°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | BWk - Cold Desert Climate |