Greenwood, Indiana has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 6.3 °C (low) to 16.9 °C (high). Annual precipitation averages 1132.1 Millimeters. Greenwood is located in USDA Plant Hardiness Zone 6a. 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 | -6.7 °C | 2.1 °C | 77.72 mm |
| February | -5.1 °C | 4.4 °C | 62.48 mm |
| March | -0.3 °C | 10.4 °C | 86.87 mm |
| April | 5.7 °C | 17.4 °C | 118.62 mm |
| May | 11.8 °C | 22.9 °C | 128.27 mm |
| June | 16.7 °C | 27.6 °C | 131.32 mm |
| July | 18.4 °C | 29.2 °C | 111.25 mm |
| August | 17.5 °C | 28.7 °C | 81.53 mm |
| September | 13.2 °C | 25.7 °C | 82.8 mm |
| October | 6.9 °C | 18.9 °C | 82.3 mm |
| November | 0.9 °C | 11.1 °C | 88.9 mm |
| December | -3.6 °C | 4.6 °C | 80.01 mm |
| Annual | 6.3 °C | 16.9 °C | 1132.07 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 6a : -23.3°C to -20.6°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 |