Ridgeland, Mississippi has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 12 °C (low) to 24.1 °C (high). Annual precipitation averages 1442.2 Millimeters. Ridgeland 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 | 2.1 °C | 13.7 °C | 136.91 mm |
| February | 3.6 °C | 16.2 °C | 140.72 mm |
| March | 7.3 °C | 20.4 °C | 131.32 mm |
| April | 11.6 °C | 24 °C | 154.43 mm |
| May | 16.6 °C | 28.1 °C | 108.46 mm |
| June | 20.4 °C | 31.3 °C | 112.01 mm |
| July | 21.8 °C | 32.6 °C | 124.97 mm |
| August | 21.4 °C | 32.7 °C | 108.46 mm |
| September | 18.3 °C | 30.3 °C | 87.38 mm |
| October | 11.7 °C | 25.3 °C | 84.84 mm |
| November | 6.1 °C | 19.3 °C | 121.92 mm |
| December | 3.2 °C | 15 °C | 130.81 mm |
| Annual | 12 °C | 24.1 °C | 1442.23 mm |
| 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 : -9.4°C to -6.7°C |
| Plant Hardiness Zone - 2012 | Zone 8a : -12.2°C to -9.4°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |