Carrollton, Mississippi has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 11 °C (low) to 23.2 °C (high). Annual precipitation averages 1476 Millimeters. Carrollton is located in USDA Plant Hardiness Zone 8a. 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 | 0.6 °C | 11.7 °C | 133.6 mm |
| February | 2.1 °C | 14.2 °C | 130.3 mm |
| March | 6.1 °C | 18.9 °C | 143.76 mm |
| April | 10.6 °C | 23.3 °C | 149.61 mm |
| May | 15.8 °C | 27.6 °C | 132.08 mm |
| June | 19.9 °C | 31 °C | 108.97 mm |
| July | 21.6 °C | 32.4 °C | 117.35 mm |
| August | 20.9 °C | 32.6 °C | 96.52 mm |
| September | 17.2 °C | 30.1 °C | 96.27 mm |
| October | 10.7 °C | 24.7 °C | 94.49 mm |
| November | 5.1 °C | 18.2 °C | 120.14 mm |
| December | 1.8 °C | 13.1 °C | 152.91 mm |
| Annual | 11 °C | 23.2 °C | 1476 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 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 |