Tatum, New Mexico has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 44.1 °F (low) to 74.6 °F (high). Annual precipitation averages 14.7 Inches. Tatum 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 Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 24.9 °F | 54.9 °F | 0.46 in. |
| February | 27.9 °F | 59.5 °F | 0.39 in. |
| March | 34.1 °F | 67.2 °F | 0.81 in. |
| April | 41.4 °F | 75.2 °F | 0.71 in. |
| May | 51.7 °F | 83.4 °F | 1.46 in. |
| June | 61.0 °F | 92.1 °F | 1.52 in. |
| July | 64.5 °F | 92.5 °F | 2.25 in. |
| August | 63.3 °F | 91.4 °F | 2.15 in. |
| September | 56.5 °F | 84.7 °F | 2.32 in. |
| October | 44.9 °F | 75.4 °F | 1.34 in. |
| November | 32.6 °F | 63.4 °F | 0.68 in. |
| December | 25.9 °F | 55.2 °F | 0.57 in. |
| Annual | 44.1 °F | 74.6 °F | 14.66 in. |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 75-100 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 | BSk - Cold Semi-Arid Climate |