Indianola, Mississippi has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 12.3 °C (low) to 23.2 °C (high). Annual precipitation averages 1425.2 Millimeters. Indianola 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. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 1.7 °C | 11.2 °C | 133.35 mm |
| February | 3.3 °C | 13.7 °C | 132.84 mm |
| March | 7.3 °C | 18.6 °C | 135.13 mm |
| April | 12.2 °C | 23.5 °C | 155.19 mm |
| May | 17.4 °C | 28 °C | 127 mm |
| June | 21.3 °C | 31.5 °C | 98.55 mm |
| July | 22.7 °C | 32.7 °C | 105.16 mm |
| August | 21.8 °C | 33.1 °C | 83.82 mm |
| September | 18.3 °C | 30.7 °C | 92.71 mm |
| October | 12.1 °C | 25 °C | 98.3 mm |
| November | 6.3 °C | 17.9 °C | 118.62 mm |
| December | 3 °C | 12.7 °C | 144.53 mm |
| Annual | 12.3 °C | 23.2 °C | 1425.2 mm |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| 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 |