Greenup, Kentucky has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 43.3 °F (low) to 66.5 °F (high). Annual precipitation averages 43.6 Inches. Greenup is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 23.0 °F | 42.4 °F | 3.21 in. |
| February | 24.7 °F | 46.2 °F | 3.17 in. |
| March | 31.3 °F | 55.7 °F | 4.08 in. |
| April | 41.3 °F | 68.3 °F | 3.81 in. |
| May | 51.5 °F | 76.5 °F | 4.53 in. |
| June | 60.7 °F | 83.5 °F | 4.2 in. |
| July | 64.7 °F | 86.7 °F | 4.68 in. |
| August | 63.0 °F | 86.1 °F | 3.32 in. |
| September | 55.6 °F | 80.5 °F | 3.36 in. |
| October | 43.4 °F | 69.5 °F | 3.03 in. |
| November | 32.7 °F | 56.6 °F | 2.76 in. |
| December | 27.3 °F | 46.2 °F | 3.48 in. |
| Annual | 43.3 °F | 66.5 °F | 43.63 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 7a : 0°F to 5°F |
| Plant Hardiness Zone - 2012 | Zone 6b : -5°F to 0°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |