Manchester, Kentucky has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 6.4 °C (low) to 19.7 °C (high). Annual precipitation averages 1326.9 Millimeters. Manchester is located in USDA Plant Hardiness Zone 6b. 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 | -4.4 °C | 7.2 °C | 107.7 mm |
| February | -3.2 °C | 9.3 °C | 99.57 mm |
| March | 0.3 °C | 14.5 °C | 115.06 mm |
| April | 5.3 °C | 20.6 °C | 120.14 mm |
| May | 11 °C | 24.6 °C | 115.82 mm |
| June | 15.6 °C | 28.4 °C | 130.81 mm |
| July | 17.9 °C | 29.9 °C | 157.73 mm |
| August | 17.2 °C | 29.5 °C | 93.47 mm |
| September | 13.2 °C | 26.9 °C | 91.44 mm |
| October | 6.2 °C | 21.3 °C | 79.76 mm |
| November | 0.3 °C | 14.8 °C | 90.93 mm |
| December | -2.4 °C | 9.2 °C | 124.46 mm |
| Annual | 6.4 °C | 19.7 °C | 1326.89 mm |
| 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 6b : -20.6°C to -17.8°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |