Leesville, Louisiana has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 13.2 °C (low) to 25.4 °C (high). Annual precipitation averages 1512.8 Millimeters. Leesville is located in USDA Plant Hardiness Zone 9a. The growing season typically runs from the last frost around Mar. 21 - Mar. 31 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 3.5 °C | 15.4 °C | 144.53 mm |
| February | 5.4 °C | 17.6 °C | 120.4 mm |
| March | 9.1 °C | 21.8 °C | 126.75 mm |
| April | 12.7 °C | 25.4 °C | 133.35 mm |
| May | 17.4 °C | 29.3 °C | 121.67 mm |
| June | 21.1 °C | 32.4 °C | 125.48 mm |
| July | 22.2 °C | 33.7 °C | 111.25 mm |
| August | 21.9 °C | 34.1 °C | 110.49 mm |
| September | 19.1 °C | 31.4 °C | 112.01 mm |
| October | 13.2 °C | 26.7 °C | 128.27 mm |
| November | 7.7 °C | 20.7 °C | 136.4 mm |
| December | 4.5 °C | 16.4 °C | 142.24 mm |
| Annual | 13.2 °C | 25.4 °C | 1512.84 mm |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 30-40 Days |
| Plant Hardiness Zone | Zone 9a : -6.7°C to -3.9°C |
| Plant Hardiness Zone - 2012 | Zone 8b : -9.4°C to -6.7°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |