Lillie, Louisiana has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 51.9 °F (low) to 75.6 °F (high). Annual precipitation averages 57.4 Inches. Lillie is located in USDA Plant Hardiness Zone 8b. 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 | 33.0 °F | 55.5 °F | 5.53 in. |
| February | 36.5 °F | 60.0 °F | 4.71 in. |
| March | 43.4 °F | 67.9 °F | 5.72 in. |
| April | 51.1 °F | 76.0 °F | 5.87 in. |
| May | 60.5 °F | 82.9 °F | 4.85 in. |
| June | 68.1 °F | 89.8 °F | 4.43 in. |
| July | 71.1 °F | 92.7 °F | 4.26 in. |
| August | 70.1 °F | 93.0 °F | 3.65 in. |
| September | 62.8 °F | 87.8 °F | 3.7 in. |
| October | 50.8 °F | 77.8 °F | 4.57 in. |
| November | 40.9 °F | 65.9 °F | 4.38 in. |
| December | 35.0 °F | 57.7 °F | 5.73 in. |
| Annual | 51.9 °F | 75.6 °F | 57.4 in. |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 8b : 15°F to 20°F |
| Plant Hardiness Zone - 2012 | Zone 8a : 10°F to 15°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |