Poseyville, Indiana has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 46.2 °F (low) to 66.7 °F (high). Annual precipitation averages 48 Inches. Poseyville 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 | 24.3 °F | 40.6 °F | 3.59 in. |
| February | 26.9 °F | 45.6 °F | 3.12 in. |
| March | 35.1 °F | 55.5 °F | 4.49 in. |
| April | 45.5 °F | 67.5 °F | 5.03 in. |
| May | 56.2 °F | 77.1 °F | 5.27 in. |
| June | 64.8 °F | 85.4 °F | 4.35 in. |
| July | 67.8 °F | 88.4 °F | 4.41 in. |
| August | 65.8 °F | 87.4 °F | 3.05 in. |
| September | 58.1 °F | 82.1 °F | 3.46 in. |
| October | 46.6 °F | 70.2 °F | 3.44 in. |
| November | 35.8 °F | 55.9 °F | 3.92 in. |
| December | 27.9 °F | 44.8 °F | 3.84 in. |
| Annual | 46.2 °F | 66.7 °F | 47.97 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 |