Vincennes, Indiana has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 45 °F (low) to 65.7 °F (high). Annual precipitation averages 46.9 Inches. Vincennes is located in USDA Plant Hardiness Zone 6b. 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 | 22.5 °F | 39.0 °F | 3.24 in. |
| February | 25.5 °F | 43.9 °F | 2.65 in. |
| March | 33.8 °F | 54.4 °F | 3.8 in. |
| April | 44.3 °F | 66.7 °F | 4.98 in. |
| May | 55.4 °F | 76.3 °F | 5.36 in. |
| June | 64.1 °F | 84.9 °F | 4.74 in. |
| July | 66.6 °F | 87.5 °F | 4.39 in. |
| August | 64.5 °F | 86.7 °F | 3.11 in. |
| September | 56.7 °F | 81.5 °F | 3.64 in. |
| October | 45.1 °F | 69.4 °F | 3.56 in. |
| November | 34.8 °F | 55.0 °F | 4.01 in. |
| December | 26.8 °F | 43.4 °F | 3.41 in. |
| Annual | 45 °F | 65.7 °F | 46.89 in. |
| 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 6b : -5°F to 0°F |
| Plant Hardiness Zone - 2012 | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |