Jackson, Alabama has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 11.8 °C (low) to 25.1 °C (high). Annual precipitation averages 1523 Millimeters. Jackson is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Mar. 11 - Mar. 20 through the first frost around Nov. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 2.1 °C | 15.3 °C | 138.18 mm |
| February | 4 °C | 17.7 °C | 132.08 mm |
| March | 7.2 °C | 21.7 °C | 140.21 mm |
| April | 10.8 °C | 25.3 °C | 113.79 mm |
| May | 15.7 °C | 29.3 °C | 107.19 mm |
| June | 19.8 °C | 31.9 °C | 147.83 mm |
| July | 21.4 °C | 32.9 °C | 153.67 mm |
| August | 21.2 °C | 32.8 °C | 125.48 mm |
| September | 18.4 °C | 30.7 °C | 107.7 mm |
| October | 11.9 °C | 26 °C | 93.22 mm |
| November | 6.1 °C | 20.6 °C | 115.06 mm |
| December | 3.3 °C | 16.5 °C | 148.59 mm |
| Annual | 11.8 °C | 25.1 °C | 1523 mm |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 11 - Mar. 20 |
| Average Days With Frost | 40-50 Days |
| Plant Hardiness Zone | Zone 8b : -9.4°C to -6.7°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 |