Columbus, Mississippi has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 11.1 °C (low) to 23.8 °C (high). Annual precipitation averages 1425.7 Millimeters. Columbus is located in USDA Plant Hardiness Zone 8b. 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 | 0.6 °C | 12.2 °C | 133.35 mm |
| February | 2.1 °C | 14.8 °C | 134.37 mm |
| March | 6.3 °C | 19.5 °C | 134.11 mm |
| April | 10.6 °C | 24.1 °C | 146.56 mm |
| May | 15.6 °C | 28.1 °C | 109.98 mm |
| June | 19.8 °C | 31.8 °C | 107.95 mm |
| July | 21.7 °C | 33.4 °C | 124.71 mm |
| August | 21.2 °C | 33.3 °C | 106.93 mm |
| September | 17.6 °C | 30.6 °C | 91.95 mm |
| October | 10.7 °C | 25.2 °C | 89.66 mm |
| November | 4.7 °C | 18.4 °C | 109.73 mm |
| December | 1.9 °C | 13.6 °C | 136.4 mm |
| Annual | 11.1 °C | 23.8 °C | 1425.7 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 8b : -9.4°C to -6.7°C |
| Plant Hardiness Zone - 2012 | Zone 8a : -12.2°C to -9.4°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |