Martin, Kentucky has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 44.3 °F (low) to 67.7 °F (high). Annual precipitation averages 47.4 Inches. Martin is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 24.8 °F | 45.0 °F | 3.53 in. |
| February | 26.8 °F | 49.1 °F | 3.48 in. |
| March | 32.9 °F | 58.6 °F | 4.31 in. |
| April | 42.3 °F | 69.9 °F | 4.12 in. |
| May | 52.3 °F | 77.2 °F | 4.78 in. |
| June | 60.9 °F | 83.7 °F | 4.54 in. |
| July | 64.9 °F | 87.2 °F | 5.51 in. |
| August | 63.6 °F | 85.9 °F | 3.75 in. |
| September | 56.8 °F | 80.0 °F | 3.27 in. |
| October | 44.4 °F | 69.3 °F | 2.93 in. |
| November | 33.6 °F | 58.5 °F | 3.0 in. |
| December | 28.8 °F | 48.4 °F | 4.19 in. |
| Annual | 44.3 °F | 67.7 °F | 47.41 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| 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 | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |