Zavalla, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 12.6 °C (low) to 25.7 °C (high). Annual precipitation averages 1392.7 Millimeters. Zavalla 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 | 2.9 °C | 15.8 °C | 127.76 mm |
| February | 4.8 °C | 17.9 °C | 106.93 mm |
| March | 8.3 °C | 21.7 °C | 125.73 mm |
| April | 12.2 °C | 25.5 °C | 120.9 mm |
| May | 17 °C | 29.3 °C | 119.13 mm |
| June | 20.6 °C | 32.6 °C | 126.75 mm |
| July | 21.7 °C | 34.3 °C | 95.25 mm |
| August | 21.4 °C | 34.7 °C | 109.22 mm |
| September | 18.6 °C | 31.8 °C | 98.81 mm |
| October | 12.6 °C | 26.8 °C | 111.76 mm |
| November | 7.4 °C | 20.9 °C | 106.93 mm |
| December | 3.9 °C | 16.5 °C | 143.51 mm |
| Annual | 12.6 °C | 25.7 °C | 1392.68 mm |
| 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 : -6.7°C to -3.9°C |
| Plant Hardiness Zone - 2012 | Zone 8b : -9.4°C to -6.7°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |