Jacinto, Mississippi has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 9.7 °C (low) to 21.9 °C (high). Annual precipitation averages 1491.2 Millimeters. 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 | -1.3 °C | 9.9 °C | 130.81 mm |
| February | 0.3 °C | 12.5 °C | 131.83 mm |
| March | 4.3 °C | 17.4 °C | 140.72 mm |
| April | 9.2 °C | 22.5 °C | 139.7 mm |
| May | 14.4 °C | 26.5 °C | 139.7 mm |
| June | 18.8 °C | 30.3 °C | 114.05 mm |
| July | 20.6 °C | 31.9 °C | 113.03 mm |
| August | 20 °C | 31.8 °C | 109.47 mm |
| September | 16.1 °C | 28.9 °C | 112.52 mm |
| October | 9.4 °C | 23.2 °C | 96.77 mm |
| November | 3.6 °C | 16.7 °C | 110.74 mm |
| December | 0.4 °C | 11.4 °C | 151.89 mm |
| Annual | 9.7 °C | 21.9 °C | 1491.23 mm |
| 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 : -15°C to -12.2°C |
| Plant Hardiness Zone - 2012 | Zone 7b : -15°C to -12.2°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |