Hickory, Mississippi has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 10.9 °C (low) to 24.3 °C (high). Annual precipitation averages 1494.5 Millimeters. Hickory is located in USDA Plant Hardiness Zone 8a. The growing season typically runs from the last frost around Mar. 11 - Mar. 20 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 0.9 °C | 13.7 °C | 148.84 mm |
| February | 2.7 °C | 16.3 °C | 139.45 mm |
| March | 6.3 °C | 20.5 °C | 145.29 mm |
| April | 10.3 °C | 24.3 °C | 148.08 mm |
| May | 15.1 °C | 28.2 °C | 108.46 mm |
| June | 19.6 °C | 31.9 °C | 126.49 mm |
| July | 20.9 °C | 33 °C | 126.75 mm |
| August | 20.4 °C | 32.9 °C | 117.35 mm |
| September | 17.3 °C | 30.6 °C | 85.85 mm |
| October | 10.5 °C | 25.4 °C | 90.42 mm |
| November | 4.7 °C | 19.4 °C | 116.84 mm |
| December | 2.2 °C | 15.1 °C | 140.72 mm |
| Annual | 10.9 °C | 24.3 °C | 1494.54 mm |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Mar. 11 - Mar. 20 |
| 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 |