Mantachie, Mississippi has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 50.7 °F (low) to 73.2 °F (high). Annual precipitation averages 59.6 Inches. Mantachie 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 | 31.3 °F | 51.7 °F | 5.17 in. |
| February | 34.3 °F | 56.4 °F | 5.07 in. |
| March | 41.5 °F | 65.6 °F | 5.35 in. |
| April | 49.6 °F | 74.2 °F | 5.62 in. |
| May | 59.0 °F | 81.6 °F | 6.02 in. |
| June | 67.0 °F | 88.2 °F | 4.76 in. |
| July | 70.2 °F | 90.9 °F | 4.61 in. |
| August | 69.1 °F | 91.1 °F | 4.13 in. |
| September | 62.0 °F | 85.6 °F | 4.08 in. |
| October | 49.9 °F | 75.3 °F | 3.97 in. |
| November | 39.7 °F | 63.5 °F | 4.59 in. |
| December | 34.4 °F | 54.4 °F | 6.23 in. |
| Annual | 50.7 °F | 73.2 °F | 59.6 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 8a : 10°F to 15°F |
| Plant Hardiness Zone - 2012 | Zone 7b : 5°F to 10°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |