Hackberry, Louisiana has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 15.3 °C (low) to 25.5 °C (high). Annual precipitation averages 1549.7 Millimeters. Hackberry is located in USDA Plant Hardiness Zone 9b. The growing season typically runs from the last frost around Jan. 21 - Jan. 31 through the first frost around Dec. 21 - Dec. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 5.8 °C | 16.2 °C | 149.1 mm |
| February | 7.8 °C | 18.2 °C | 96.27 mm |
| March | 11.3 °C | 21.8 °C | 88.9 mm |
| April | 15.1 °C | 25.2 °C | 119.13 mm |
| May | 19.7 °C | 28.8 °C | 118.36 mm |
| June | 22.9 °C | 31.8 °C | 178.82 mm |
| July | 23.9 °C | 32.8 °C | 160.78 mm |
| August | 23.7 °C | 33.2 °C | 145.8 mm |
| September | 21.2 °C | 31.3 °C | 147.07 mm |
| October | 15.6 °C | 27.2 °C | 111.51 mm |
| November | 10.2 °C | 21.6 °C | 116.08 mm |
| December | 6.9 °C | 17.5 °C | 117.86 mm |
| Annual | 15.3 °C | 25.5 °C | 1549.68 mm |
| Average First Frost Date | Dec. 21 - Dec. 31 |
| Average Last Frost Date | Jan. 21 - Jan. 31 |
| Average Days With Frost | Frost Rare |
| Plant Hardiness Zone | Zone 9b : -3.9°C to -1.1°C |
| Plant Hardiness Zone - 2012 | Zone 9a : -6.7°C to -3.9°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |