Diboll, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 54.7 °F (low) to 78.1 °F (high). Annual precipitation averages 52.5 Inches. Diboll is located in USDA Plant Hardiness Zone 9a. 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 | 36.9 °F | 60.3 °F | 4.8 in. |
| February | 40.4 °F | 64.4 °F | 3.97 in. |
| March | 47.0 °F | 71.2 °F | 4.45 in. |
| April | 53.8 °F | 77.7 °F | 4.17 in. |
| May | 62.9 °F | 84.5 °F | 4.56 in. |
| June | 69.2 °F | 90.5 °F | 5.16 in. |
| July | 71.6 °F | 93.6 °F | 3.04 in. |
| August | 70.9 °F | 94.4 °F | 3.85 in. |
| September | 65.4 °F | 89.0 °F | 3.73 in. |
| October | 54.6 °F | 80.2 °F | 4.76 in. |
| November | 44.9 °F | 69.5 °F | 4.8 in. |
| December | 38.8 °F | 61.7 °F | 5.24 in. |
| Annual | 54.7 °F | 78.1 °F | 52.53 in. |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 1 - Mar. 10 |
| Average Days With Frost | 20-30 Days |
| Plant Hardiness Zone | Zone 9a : 20°F to 25°F |
| Plant Hardiness Zone - 2012 | Zone 8b : 15°F to 20°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |