Mortons Gap, Kentucky has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 47.1 °F (low) to 68.5 °F (high). Annual precipitation averages 50.9 Inches. Mortons Gap is located in USDA Plant Hardiness Zone 7a. 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 | 26.0 °F | 44.0 °F | 3.76 in. |
| February | 28.9 °F | 48.7 °F | 4.17 in. |
| March | 37.0 °F | 58.2 °F | 4.72 in. |
| April | 46.6 °F | 69.7 °F | 4.85 in. |
| May | 56.4 °F | 77.9 °F | 5.07 in. |
| June | 64.7 °F | 85.5 °F | 4.65 in. |
| July | 68.1 °F | 88.4 °F | 4.57 in. |
| August | 66.0 °F | 88.6 °F | 3.05 in. |
| September | 58.5 °F | 83.2 °F | 3.39 in. |
| October | 47.0 °F | 71.6 °F | 3.93 in. |
| November | 36.5 °F | 58.2 °F | 4.08 in. |
| December | 29.9 °F | 47.4 °F | 4.64 in. |
| Annual | 47.1 °F | 68.5 °F | 50.88 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 7a : 0°F to 5°F |
| Plant Hardiness Zone - 2012 | Zone 6b : -5°F to 0°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |