Tatum, New Mexico has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 6.7 °C (low) to 23.7 °C (high). Annual precipitation averages 372.4 Millimeters. 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 | -3.9 °C | 12.7 °C | 11.68 mm |
| February | -2.3 °C | 15.3 °C | 9.91 mm |
| March | 1.2 °C | 19.6 °C | 20.57 mm |
| April | 5.2 °C | 24 °C | 18.03 mm |
| May | 10.9 °C | 28.6 °C | 37.08 mm |
| June | 16.1 °C | 33.4 °C | 38.61 mm |
| July | 18.1 °C | 33.6 °C | 57.15 mm |
| August | 17.4 °C | 33 °C | 54.61 mm |
| September | 13.6 °C | 29.3 °C | 58.93 mm |
| October | 7.2 °C | 24.1 °C | 34.04 mm |
| November | 0.3 °C | 17.4 °C | 17.27 mm |
| December | -3.4 °C | 12.9 °C | 14.48 mm |
| Annual | 6.7 °C | 23.7 °C | 372.36 mm |
| 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 : -15°C to -12.2°C |
| Plant Hardiness Zone - 2012 | Zone 7a : -17.8°C to -15°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |