Tarrant, Alabama has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 10.7 °C (low) to 23.3 °C (high). Annual precipitation averages 1489 Millimeters. Tarrant 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. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 0.4 °C | 12.3 °C | 133.35 mm |
| February | 1.9 °C | 14.8 °C | 137.92 mm |
| March | 5.7 °C | 19.3 °C | 144.53 mm |
| April | 9.7 °C | 23.7 °C | 131.32 mm |
| May | 14.8 °C | 27.6 °C | 118.87 mm |
| June | 19.2 °C | 30.9 °C | 122.94 mm |
| July | 21.1 °C | 32.7 °C | 131.83 mm |
| August | 20.7 °C | 32.4 °C | 110.49 mm |
| September | 17.4 °C | 29.9 °C | 111.25 mm |
| October | 10.8 °C | 24.3 °C | 87.38 mm |
| November | 4.9 °C | 18.3 °C | 121.92 mm |
| December | 1.9 °C | 13.7 °C | 137.16 mm |
| Annual | 10.7 °C | 23.3 °C | 1488.96 mm |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| 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 8a : -12.2°C to -9.4°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |