Walls, Mississippi has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 10.8 °C (low) to 21.9 °C (high). Annual precipitation averages 1366.8 Millimeters. Walls 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 | -0.4 °C | 9.3 °C | 105.92 mm |
| February | 1.4 °C | 11.9 °C | 117.6 mm |
| March | 5.6 °C | 16.9 °C | 142.49 mm |
| April | 10.6 °C | 22.3 °C | 143.26 mm |
| May | 15.9 °C | 26.8 °C | 135.64 mm |
| June | 20.4 °C | 31.1 °C | 109.98 mm |
| July | 22.1 °C | 32.5 °C | 107.19 mm |
| August | 21 °C | 32.3 °C | 74.93 mm |
| September | 16.9 °C | 29.4 °C | 73.41 mm |
| October | 10.4 °C | 23.5 °C | 96.27 mm |
| November | 4.7 °C | 16.4 °C | 118.62 mm |
| December | 1.2 °C | 10.8 °C | 141.48 mm |
| Annual | 10.8 °C | 21.9 °C | 1366.79 mm |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Mar. 11 - Mar. 20 |
| Average Days With Frost | 50-75 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 | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |