Vincennes, Indiana has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 7.2 °C (low) to 18.7 °C (high). Annual precipitation averages 1191 Millimeters. 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 | -5.3 °C | 3.9 °C | 82.3 mm |
| February | -3.6 °C | 6.6 °C | 67.31 mm |
| March | 1 °C | 12.4 °C | 96.52 mm |
| April | 6.8 °C | 19.3 °C | 126.49 mm |
| May | 13 °C | 24.6 °C | 136.14 mm |
| June | 17.8 °C | 29.4 °C | 120.4 mm |
| July | 19.2 °C | 30.8 °C | 111.51 mm |
| August | 18.1 °C | 30.4 °C | 78.99 mm |
| September | 13.7 °C | 27.5 °C | 92.46 mm |
| October | 7.3 °C | 20.8 °C | 90.42 mm |
| November | 1.6 °C | 12.8 °C | 101.85 mm |
| December | -2.9 °C | 6.3 °C | 86.61 mm |
| Annual | 7.2 °C | 18.7 °C | 1191 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 6b : -20.6°C to -17.8°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 |