Farmington, Kentucky has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 48.4 °F (low) to 68.2 °F (high). Annual precipitation averages 53.7 Inches. Farmington is located in USDA Plant Hardiness Zone 7b. The growing season typically runs from the last frost around Mar. 21 - Mar. 31 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 27.8 °F | 44.5 °F | 3.99 in. |
| February | 30.2 °F | 48.9 °F | 4.41 in. |
| March | 38.1 °F | 58.8 °F | 5.02 in. |
| April | 47.6 °F | 69.2 °F | 5.19 in. |
| May | 57.6 °F | 77.4 °F | 5.73 in. |
| June | 65.8 °F | 85.0 °F | 4.67 in. |
| July | 69.0 °F | 88.1 °F | 4.3 in. |
| August | 67.2 °F | 87.8 °F | 3.37 in. |
| September | 59.9 °F | 82.0 °F | 3.79 in. |
| October | 48.1 °F | 70.6 °F | 3.77 in. |
| November | 38.0 °F | 58.0 °F | 4.26 in. |
| December | 31.0 °F | 47.6 °F | 5.15 in. |
| Annual | 48.4 °F | 68.2 °F | 53.65 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 7b : 5°F to 10°F |
| Plant Hardiness Zone - 2012 | Zone 7a : 0°F to 5°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |