Kiln, Mississippi has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 14 °C (low) to 25.1 °C (high). Annual precipitation averages 1721.1 Millimeters. 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 | 4.7 °C | 15.9 °C | 144.78 mm |
| February | 6.2 °C | 17.9 °C | 112.01 mm |
| March | 9.9 °C | 21.6 °C | 139.7 mm |
| April | 13.3 °C | 24.8 °C | 151.38 mm |
| May | 17.9 °C | 28.7 °C | 139.19 mm |
| June | 21.6 °C | 31.7 °C | 174.75 mm |
| July | 22.7 °C | 32.5 °C | 200.41 mm |
| August | 22.6 °C | 32.7 °C | 173.48 mm |
| September | 20.4 °C | 30.9 °C | 149.35 mm |
| October | 14.7 °C | 26.4 °C | 94.74 mm |
| November | 8.8 °C | 20.9 °C | 113.03 mm |
| December | 5.5 °C | 16.9 °C | 128.27 mm |
| Annual | 14 °C | 25.1 °C | 1721.09 mm |
| 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 : -6.7°C to -3.9°C |
| Plant Hardiness Zone - 2012 | Zone 9a : -6.7°C to -3.9°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |