Kilmichael, Mississippi has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 10.3 °C (low) to 22.9 °C (high). Annual precipitation averages 1489.2 Millimeters. Kilmichael is located in USDA Plant Hardiness Zone 8a. 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 | -0.1 °C | 11.8 °C | 133.1 mm |
| February | 1.4 °C | 14.3 °C | 137.41 mm |
| March | 5.3 °C | 18.9 °C | 144.27 mm |
| April | 9.6 °C | 22.9 °C | 153.67 mm |
| May | 14.8 °C | 27 °C | 131.32 mm |
| June | 19.1 °C | 30.6 °C | 112.52 mm |
| July | 20.9 °C | 32.1 °C | 122.94 mm |
| August | 20.2 °C | 32.1 °C | 103.63 mm |
| September | 16.6 °C | 29.6 °C | 98.55 mm |
| October | 9.9 °C | 24.2 °C | 91.69 mm |
| November | 4.3 °C | 18 °C | 112.01 mm |
| December | 1.2 °C | 13.1 °C | 148.08 mm |
| Annual | 10.3 °C | 22.9 °C | 1489.19 mm |
| 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 8a : -12.2°C to -9.4°C |
| Plant Hardiness Zone - 2012 | Zone 7b : -15°C to -12.2°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |