Woodburn, Kentucky has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 8.3 °C (low) to 20.1 °C (high). Annual precipitation averages 1318 Millimeters. Woodburn 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 | -3 °C | 7 °C | 98.3 mm |
| February | -1.5 °C | 9.6 °C | 107.7 mm |
| March | 2.6 °C | 14.7 °C | 124.46 mm |
| April | 7.6 °C | 20.4 °C | 125.22 mm |
| May | 13.3 °C | 24.9 °C | 136.65 mm |
| June | 17.7 °C | 29.6 °C | 118.87 mm |
| July | 19.7 °C | 31.3 °C | 114.3 mm |
| August | 18.9 °C | 30.8 °C | 87.63 mm |
| September | 14.8 °C | 27.7 °C | 95.76 mm |
| October | 8.2 °C | 21.7 °C | 92.46 mm |
| November | 2.3 °C | 14.6 °C | 94.74 mm |
| December | -0.9 °C | 8.9 °C | 121.92 mm |
| Annual | 8.3 °C | 20.1 °C | 1318.01 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 7a : -17.8°C to -15°C |
| Plant Hardiness Zone - 2012 | Zone 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |