Rochester, Kentucky has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 45.9 °F (low) to 68.2 °F (high). Annual precipitation averages 51.1 Inches. Rochester 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 | 25.0 °F | 43.7 °F | 3.67 in. |
| February | 27.7 °F | 48.5 °F | 4.13 in. |
| March | 35.1 °F | 57.6 °F | 4.63 in. |
| April | 44.7 °F | 69.4 °F | 4.87 in. |
| May | 55.1 °F | 77.9 °F | 5.17 in. |
| June | 64.0 °F | 85.4 °F | 4.66 in. |
| July | 67.0 °F | 88.6 °F | 4.32 in. |
| August | 65.0 °F | 87.9 °F | 3.6 in. |
| September | 57.5 °F | 81.9 °F | 3.72 in. |
| October | 46.1 °F | 72.1 °F | 3.98 in. |
| November | 34.9 °F | 58.1 °F | 3.8 in. |
| December | 29.2 °F | 47.7 °F | 4.54 in. |
| Annual | 45.9 °F | 68.2 °F | 51.09 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 |