Grenada, Mississippi has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 10.8 °C (low) to 23 °C (high). Annual precipitation averages 1490 Millimeters. Grenada 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 Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 0.1 °C | 11.1 °C | 130.3 mm |
| February | 1.7 °C | 13.7 °C | 134.62 mm |
| March | 5.7 °C | 18.6 °C | 135.89 mm |
| April | 10.2 °C | 23.3 °C | 158.24 mm |
| May | 15.5 °C | 27.4 °C | 138.18 mm |
| June | 19.7 °C | 31.1 °C | 117.35 mm |
| July | 21.6 °C | 32.6 °C | 116.84 mm |
| August | 20.9 °C | 32.8 °C | 96.52 mm |
| September | 17.1 °C | 30.2 °C | 95 mm |
| October | 10.4 °C | 24.6 °C | 93.22 mm |
| November | 4.7 °C | 17.8 °C | 116.59 mm |
| December | 1.4 °C | 12.7 °C | 157.23 mm |
| Annual | 10.8 °C | 23 °C | 1489.98 mm |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| 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 8a : -12.2°C to -9.4°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |