Somerset, Kentucky has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 45.7 °F (low) to 67.3 °F (high). Annual precipitation averages 52.7 Inches. Somerset 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. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 25.9 °F | 44.6 °F | 4.44 in. |
| February | 28.7 °F | 48.6 °F | 3.79 in. |
| March | 35.2 °F | 57.9 °F | 4.9 in. |
| April | 44.4 °F | 68.4 °F | 4.57 in. |
| May | 54.2 °F | 76.2 °F | 5.36 in. |
| June | 62.3 °F | 83.4 °F | 5.06 in. |
| July | 66.0 °F | 86.2 °F | 5.11 in. |
| August | 64.3 °F | 86.0 °F | 3.44 in. |
| September | 57.4 °F | 80.5 °F | 3.85 in. |
| October | 45.6 °F | 69.9 °F | 3.59 in. |
| November | 34.7 °F | 57.7 °F | 3.69 in. |
| December | 29.6 °F | 47.8 °F | 4.93 in. |
| Annual | 45.7 °F | 67.3 °F | 52.73 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| 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 | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |