Villa Grove, Illinois has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 5.9 °C (low) to 17 °C (high). Annual precipitation averages 1023.9 Millimeters. Villa Grove is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -7.3 °C | 1.3 °C | 60.45 mm |
| February | -5.6 °C | 3.8 °C | 52.58 mm |
| March | -0.5 °C | 10.3 °C | 72.39 mm |
| April | 5.3 °C | 17.8 °C | 111.76 mm |
| May | 11.8 °C | 23.6 °C | 112.01 mm |
| June | 16.9 °C | 28.2 °C | 118.36 mm |
| July | 18.2 °C | 29.6 °C | 106.68 mm |
| August | 16.9 °C | 28.8 °C | 75.18 mm |
| September | 12.8 °C | 26.2 °C | 80.01 mm |
| October | 6.4 °C | 19.2 °C | 85.09 mm |
| November | 0.6 °C | 10.9 °C | 85.34 mm |
| December | -4.2 °C | 4.1 °C | 64.01 mm |
| Annual | 5.9 °C | 17 °C | 1023.86 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 6a : -23.3°C to -20.6°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 |