Gentryville, Indiana has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 46.5 °F (low) to 67 °F (high). Annual precipitation averages 50.2 Inches. Gentryville 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 | 25.0 °F | 41.7 °F | 3.6 in. |
| February | 27.2 °F | 46.3 °F | 3.36 in. |
| March | 35.3 °F | 56.1 °F | 4.59 in. |
| April | 45.6 °F | 67.9 °F | 5.24 in. |
| May | 55.9 °F | 77.0 °F | 5.47 in. |
| June | 64.2 °F | 84.9 °F | 4.73 in. |
| July | 67.8 °F | 87.9 °F | 4.48 in. |
| August | 65.8 °F | 87.3 °F | 3.16 in. |
| September | 58.4 °F | 81.7 °F | 3.75 in. |
| October | 46.8 °F | 70.3 °F | 3.62 in. |
| November | 36.4 °F | 56.4 °F | 4.05 in. |
| December | 29.1 °F | 45.9 °F | 4.12 in. |
| Annual | 46.5 °F | 67 °F | 50.17 in. |
| 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 : 0°F to 5°F |
| Plant Hardiness Zone - 2012 | Zone 6b : -5°F to 0°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |