Tatum, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 54.5 °F (low) to 76.5 °F (high). Annual precipitation averages 50.1 Inches. Tatum is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Mar. 1 - Mar. 10 through the first frost around Nov. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 35.5 °F | 57.2 °F | 4.22 in. |
| February | 39.2 °F | 61.4 °F | 4.16 in. |
| March | 46.0 °F | 69.0 °F | 4.88 in. |
| April | 53.2 °F | 76.6 °F | 4.55 in. |
| May | 62.6 °F | 83.3 °F | 4.59 in. |
| June | 70.0 °F | 90.1 °F | 4.58 in. |
| July | 73.0 °F | 93.6 °F | 2.97 in. |
| August | 72.2 °F | 94.2 °F | 3.05 in. |
| September | 65.6 °F | 88.6 °F | 3.6 in. |
| October | 54.3 °F | 78.7 °F | 4.53 in. |
| November | 44.4 °F | 66.8 °F | 4.11 in. |
| December | 37.4 °F | 58.7 °F | 4.88 in. |
| Annual | 54.5 °F | 76.5 °F | 50.12 in. |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 1 - Mar. 10 |
| Average Days With Frost | 30-40 Days |
| Plant Hardiness Zone | Zone 8b : 15°F to 20°F |
| Plant Hardiness Zone - 2012 | Zone 8b : 15°F to 20°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |