Greensburg, Kentucky has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 7.2 °C (low) to 20.1 °C (high). Annual precipitation averages 1384.3 Millimeters. Greensburg is located in USDA Plant Hardiness Zone 7a. 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 | -3.9 °C | 7 °C | 104.9 mm |
| February | -2.8 °C | 9.2 °C | 109.73 mm |
| March | 1.1 °C | 14.5 °C | 130.81 mm |
| April | 6.2 °C | 20.6 °C | 123.7 mm |
| May | 11.9 °C | 25.2 °C | 141.99 mm |
| June | 16.8 °C | 29.5 °C | 127.25 mm |
| July | 18.9 °C | 31.1 °C | 134.87 mm |
| August | 17.8 °C | 30.8 °C | 100.33 mm |
| September | 13.7 °C | 27.7 °C | 105.66 mm |
| October | 6.6 °C | 21.6 °C | 88.65 mm |
| November | 1.4 °C | 14.6 °C | 95 mm |
| December | -1.8 °C | 8.9 °C | 121.41 mm |
| Annual | 7.2 °C | 20.1 °C | 1384.3 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 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 |