Kiln, Mississippi has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 57.2 °F (low) to 77.1 °F (high). Annual precipitation averages 67.8 Inches. Kiln is located in USDA Plant Hardiness Zone 9a. The growing season typically runs from the last frost around Feb. 11 - Feb. 20 through the first frost around Dec. 1 - Dec. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 40.4 °F | 60.6 °F | 5.7 in. |
| February | 43.1 °F | 64.2 °F | 4.41 in. |
| March | 49.8 °F | 70.8 °F | 5.5 in. |
| April | 56.0 °F | 76.6 °F | 5.96 in. |
| May | 64.3 °F | 83.7 °F | 5.48 in. |
| June | 70.8 °F | 89.1 °F | 6.88 in. |
| July | 72.9 °F | 90.5 °F | 7.89 in. |
| August | 72.6 °F | 90.8 °F | 6.83 in. |
| September | 68.8 °F | 87.7 °F | 5.88 in. |
| October | 58.4 °F | 79.6 °F | 3.73 in. |
| November | 47.8 °F | 69.6 °F | 4.45 in. |
| December | 41.9 °F | 62.4 °F | 5.05 in. |
| Annual | 57.2 °F | 77.1 °F | 67.76 in. |
| Average First Frost Date | Dec. 1 - Dec. 10 |
| Average Last Frost Date | Feb. 11 - Feb. 20 |
| Average Days With Frost | 10-20 Days |
| Plant Hardiness Zone | Zone 9a : 20°F to 25°F |
| Plant Hardiness Zone - 2012 | Zone 9a : 20°F to 25°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |