Bentonia, Mississippi has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 53.9 °F (low) to 75.4 °F (high). Annual precipitation averages 57.4 Inches. Bentonia is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Mar. 11 - Mar. 20 through the first frost around Nov. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 35.7 °F | 55.5 °F | 5.5 in. |
| February | 38.9 °F | 60.3 °F | 5.28 in. |
| March | 45.7 °F | 68.2 °F | 5.54 in. |
| April | 53.4 °F | 75.8 °F | 6.18 in. |
| May | 62.4 °F | 82.9 °F | 4.63 in. |
| June | 69.2 °F | 89.0 °F | 4.08 in. |
| July | 71.9 °F | 91.3 °F | 4.52 in. |
| August | 70.8 °F | 91.5 °F | 4.05 in. |
| September | 64.8 °F | 87.3 °F | 3.58 in. |
| October | 53.1 °F | 77.9 °F | 3.78 in. |
| November | 43.0 °F | 66.4 °F | 4.68 in. |
| December | 37.8 °F | 58.1 °F | 5.58 in. |
| Annual | 53.9 °F | 75.4 °F | 57.4 in. |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 11 - Mar. 20 |
| Average Days With Frost | 30-40 Days |
| Plant Hardiness Zone | Zone 8b : 15°F to 20°F |
| Plant Hardiness Zone - 2012 | Zone 8a : 10°F to 15°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |