Gail, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 10 °C (low) to 24.8 °C (high). Annual precipitation averages 494.5 Millimeters. Gail is located in USDA Plant Hardiness Zone 8a. The growing season typically runs from the last frost around Mar. 21 - Mar. 31 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -1.1 °C | 14 °C | 14.99 mm |
| February | 0.6 °C | 16.3 °C | 17.02 mm |
| March | 4.7 °C | 20.8 °C | 27.69 mm |
| April | 9.1 °C | 25.7 °C | 35.31 mm |
| May | 14.5 °C | 29.8 °C | 76.45 mm |
| June | 19.2 °C | 33.5 °C | 60.96 mm |
| July | 21.1 °C | 34.7 °C | 43.94 mm |
| August | 20.6 °C | 34.4 °C | 56.9 mm |
| September | 16.7 °C | 30.2 °C | 68.58 mm |
| October | 10.5 °C | 25.5 °C | 45.97 mm |
| November | 3.9 °C | 18.8 °C | 28.7 mm |
| December | -0.4 °C | 14.3 °C | 18.03 mm |
| Annual | 10 °C | 24.8 °C | 494.54 mm |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 40-50 Days |
| Plant Hardiness Zone | Zone 8a : -12.2°C to -9.4°C |
| Plant Hardiness Zone - 2012 | Zone 7b : -15°C to -12.2°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |