Jacinto, Mississippi has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 49.4 °F (low) to 71.5 °F (high). Annual precipitation averages 58.7 Inches. Jacinto is located in USDA Plant Hardiness Zone 7b. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 29.7 °F | 49.9 °F | 5.15 in. |
| February | 32.6 °F | 54.5 °F | 5.19 in. |
| March | 39.8 °F | 63.3 °F | 5.54 in. |
| April | 48.5 °F | 72.5 °F | 5.5 in. |
| May | 58.0 °F | 79.7 °F | 5.5 in. |
| June | 65.8 °F | 86.5 °F | 4.49 in. |
| July | 69.1 °F | 89.5 °F | 4.45 in. |
| August | 68.0 °F | 89.2 °F | 4.31 in. |
| September | 60.9 °F | 84.0 °F | 4.43 in. |
| October | 48.9 °F | 73.7 °F | 3.81 in. |
| November | 38.5 °F | 62.1 °F | 4.36 in. |
| December | 32.8 °F | 52.5 °F | 5.98 in. |
| Annual | 49.4 °F | 71.5 °F | 58.71 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 7b : 5°F to 10°F |
| Plant Hardiness Zone - 2012 | Zone 7b : 5°F to 10°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |