Evansville, Indiana has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 8.4 °C (low) to 19.5 °C (high). Annual precipitation averages 1227.3 Millimeters. Evansville 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 | -3.8 °C | 5.3 °C | 88.9 mm |
| February | -2.3 °C | 7.9 °C | 80.01 mm |
| March | 2.2 °C | 13.3 °C | 111.51 mm |
| April | 7.9 °C | 20.1 °C | 132.84 mm |
| May | 13.9 °C | 25.1 °C | 129.54 mm |
| June | 18.6 °C | 29.7 °C | 111.76 mm |
| July | 20.4 °C | 31.3 °C | 111.51 mm |
| August | 19.2 °C | 30.9 °C | 79.5 mm |
| September | 14.9 °C | 27.9 °C | 91.19 mm |
| October | 8.7 °C | 21.4 °C | 88.39 mm |
| November | 2.6 °C | 13.6 °C | 98.81 mm |
| December | -1.6 °C | 7.6 °C | 103.38 mm |
| Annual | 8.4 °C | 19.5 °C | 1227.34 mm |
| 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 : -17.8°C to -15°C |
| Plant Hardiness Zone - 2012 | Zone 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |