Greenville, Mississippi has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 12.1 °C (low) to 23.4 °C (high). Annual precipitation averages 1381.3 Millimeters. Greenville 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 | 1.3 °C | 11.3 °C | 131.57 mm |
| February | 2.9 °C | 13.8 °C | 127.25 mm |
| March | 7.2 °C | 18.6 °C | 130.05 mm |
| April | 12 °C | 23.5 °C | 149.35 mm |
| May | 17.3 °C | 28.1 °C | 121.67 mm |
| June | 21.3 °C | 31.9 °C | 94.74 mm |
| July | 22.7 °C | 33.2 °C | 102.11 mm |
| August | 21.8 °C | 33.4 °C | 80.77 mm |
| September | 18.1 °C | 30.8 °C | 83.57 mm |
| October | 11.7 °C | 25.1 °C | 100.08 mm |
| November | 6.1 °C | 18.2 °C | 120.14 mm |
| December | 2.8 °C | 12.8 °C | 139.95 mm |
| Annual | 12.1 °C | 23.4 °C | 1381.25 mm |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 11 - Mar. 20 |
| Average Days With Frost | 40-50 Days |
| Plant Hardiness Zone | Zone 8b : -9.4°C to -6.7°C |
| Plant Hardiness Zone - 2012 | Zone 8a : -12.2°C to -9.4°C |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |