Booneville, Mississippi has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 9.9 °C (low) to 21.9 °C (high). Annual precipitation averages 1486.4 Millimeters. Booneville 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 Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -1.1 °C | 10.1 °C | 132.59 mm |
| February | 0.6 °C | 12.6 °C | 121.67 mm |
| March | 4.6 °C | 17.5 °C | 136.14 mm |
| April | 9.4 °C | 22.4 °C | 137.41 mm |
| May | 14.6 °C | 26.4 °C | 140.46 mm |
| June | 19 °C | 30.1 °C | 129.03 mm |
| July | 20.8 °C | 31.9 °C | 115.06 mm |
| August | 20.2 °C | 31.7 °C | 103.63 mm |
| September | 16.2 °C | 28.8 °C | 107.44 mm |
| October | 9.6 °C | 23.2 °C | 100.33 mm |
| November | 3.8 °C | 16.8 °C | 111.25 mm |
| December | 0.7 °C | 11.6 °C | 151.38 mm |
| Annual | 9.9 °C | 21.9 °C | 1486.39 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| 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 | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |