Melbourne, Kentucky has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 6.8 °C (low) to 18.6 °C (high). Annual precipitation averages 1119.6 Millimeters. Melbourne 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 | -4.8 °C | 4.7 °C | 80.26 mm |
| February | -3.5 °C | 7.1 °C | 71.88 mm |
| March | 0.3 °C | 12.3 °C | 103.89 mm |
| April | 5.8 °C | 19.2 °C | 110.49 mm |
| May | 11.5 °C | 24.1 °C | 122.94 mm |
| June | 16.6 °C | 28.6 °C | 110.49 mm |
| July | 18.7 °C | 30.4 °C | 107.7 mm |
| August | 17.9 °C | 30.1 °C | 91.19 mm |
| September | 13.3 °C | 26.8 °C | 75.18 mm |
| October | 6.8 °C | 20.3 °C | 76.2 mm |
| November | 0.9 °C | 12.9 °C | 81.53 mm |
| December | -2 °C | 7 °C | 87.88 mm |
| Annual | 6.8 °C | 18.6 °C | 1119.63 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 6b : -20.6°C to -17.8°C |
| Plant Hardiness Zone - 2012 | Zone 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |