Buna, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 56.7 °F (low) to 78.9 °F (high). Annual precipitation averages 61.6 Inches. Buna is located in USDA Plant Hardiness Zone 9a. The growing season typically runs from the last frost around Feb. 11 - Feb. 20 through the first frost around Nov. 21 - Nov. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 39.7 °F | 61.6 °F | 5.37 in. |
| February | 43.6 °F | 65.6 °F | 4.18 in. |
| March | 49.7 °F | 72.1 °F | 4.29 in. |
| April | 56.3 °F | 78.6 °F | 4.48 in. |
| May | 64.1 °F | 85.5 °F | 4.95 in. |
| June | 70.3 °F | 91.0 °F | 6.2 in. |
| July | 72.2 °F | 93.2 °F | 5.26 in. |
| August | 71.8 °F | 93.9 °F | 5.29 in. |
| September | 67.1 °F | 89.7 °F | 5.53 in. |
| October | 56.8 °F | 81.7 °F | 5.53 in. |
| November | 47.4 °F | 70.8 °F | 5.06 in. |
| December | 41.8 °F | 63.4 °F | 5.49 in. |
| Annual | 56.7 °F | 78.9 °F | 61.63 in. |
| Average First Frost Date | Nov. 21 - Nov. 30 |
| Average Last Frost Date | Feb. 11 - Feb. 20 |
| Average Days With Frost | 10-20 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 | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |