Columbus, Kentucky has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 47.8 °F (low) to 69.1 °F (high). Annual precipitation averages 51.7 Inches. Columbus is located in USDA Plant Hardiness Zone 7b. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 27.2 °F | 45.0 °F | 3.87 in. |
| February | 30.0 °F | 49.9 °F | 4.03 in. |
| March | 38.0 °F | 59.7 °F | 4.7 in. |
| April | 47.1 °F | 69.8 °F | 5.26 in. |
| May | 57.4 °F | 78.7 °F | 5.45 in. |
| June | 65.6 °F | 86.7 °F | 4.05 in. |
| July | 69.0 °F | 89.6 °F | 4.16 in. |
| August | 66.5 °F | 88.4 °F | 3.14 in. |
| September | 58.7 °F | 82.7 °F | 3.59 in. |
| October | 47.4 °F | 72.0 °F | 4.22 in. |
| November | 36.8 °F | 58.7 °F | 4.48 in. |
| December | 29.9 °F | 48.4 °F | 4.77 in. |
| Annual | 47.8 °F | 69.1 °F | 51.72 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 7b : 5°F to 10°F |
| Plant Hardiness Zone - 2012 | Zone 7a : 0°F to 5°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |