Dover, Kentucky has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 6.7 °C (low) to 19 °C (high). Annual precipitation averages 1218.7 Millimeters. Dover is located in USDA Plant Hardiness Zone 6b. 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 | -4.6 °C | 5.3 °C | 83.57 mm |
| February | -3.3 °C | 7.7 °C | 80.52 mm |
| March | 0.1 °C | 12.8 °C | 116.08 mm |
| April | 5.5 °C | 19.7 °C | 119.13 mm |
| May | 11.2 °C | 24.3 °C | 129.79 mm |
| June | 16.1 °C | 28.8 °C | 121.16 mm |
| July | 18.5 °C | 30.7 °C | 130.56 mm |
| August | 17.6 °C | 30 °C | 91.19 mm |
| September | 13.6 °C | 27 °C | 86.11 mm |
| October | 7 °C | 20.6 °C | 79.76 mm |
| November | 1.1 °C | 13.1 °C | 83.82 mm |
| December | -2.2 °C | 7.6 °C | 97.03 mm |
| Annual | 6.7 °C | 19 °C | 1218.72 mm |
| 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 6b : -20.6°C to -17.8°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |