Marrowbone, Kentucky has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 44.4 °F (low) to 68.7 °F (high). Annual precipitation averages 53.6 Inches. Marrowbone is located in USDA Plant Hardiness Zone 6b. 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 | 24.8 °F | 45.9 °F | 4.01 in. |
| February | 27.6 °F | 50.1 °F | 4.42 in. |
| March | 33.5 °F | 59.0 °F | 5.22 in. |
| April | 42.6 °F | 69.6 °F | 4.87 in. |
| May | 52.8 °F | 77.8 °F | 4.93 in. |
| June | 61.3 °F | 84.9 °F | 4.76 in. |
| July | 65.1 °F | 87.6 °F | 5.14 in. |
| August | 63.8 °F | 87.2 °F | 3.77 in. |
| September | 56.7 °F | 82.3 °F | 4.06 in. |
| October | 43.4 °F | 71.4 °F | 3.46 in. |
| November | 33.5 °F | 59.4 °F | 3.9 in. |
| December | 28.1 °F | 49.1 °F | 5.03 in. |
| Annual | 44.4 °F | 68.7 °F | 53.57 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 6b : -5°F to 0°F |
| Plant Hardiness Zone - 2012 | Zone 6b : -5°F to 0°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |