Lynch, Kentucky has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 43.9 °F (low) to 65.7 °F (high). Annual precipitation averages 55.2 Inches. Lynch is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 24.5 °F | 44.1 °F | 4.33 in. |
| February | 27.4 °F | 48.0 °F | 4.56 in. |
| March | 33.7 °F | 56.7 °F | 5.19 in. |
| April | 42.7 °F | 66.9 °F | 5.07 in. |
| May | 51.4 °F | 74.3 °F | 4.8 in. |
| June | 58.9 °F | 81.5 °F | 4.68 in. |
| July | 63.0 °F | 83.9 °F | 5.94 in. |
| August | 62.2 °F | 82.6 °F | 4.51 in. |
| September | 55.9 °F | 78.8 °F | 4.1 in. |
| October | 44.3 °F | 67.5 °F | 3.09 in. |
| November | 34.0 °F | 56.9 °F | 3.73 in. |
| December | 28.8 °F | 47.7 °F | 5.21 in. |
| Annual | 43.9 °F | 65.7 °F | 55.21 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | May 11 - May 20 |
| 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 | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |