Avoca, Indiana has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 6.2 °C (low) to 18.3 °C (high). Annual precipitation averages 1242.1 Millimeters. Avoca 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. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -5.9 °C | 3.8 °C | 90.17 mm |
| February | -4.3 °C | 6.6 °C | 73.66 mm |
| March | -0.2 °C | 12.1 °C | 102.36 mm |
| April | 5.6 °C | 18.9 °C | 132.08 mm |
| May | 11.2 °C | 23.9 °C | 144.27 mm |
| June | 16.3 °C | 28.4 °C | 130.56 mm |
| July | 18.1 °C | 30.3 °C | 111.51 mm |
| August | 17.1 °C | 29.8 °C | 90.42 mm |
| September | 12.8 °C | 26.6 °C | 89.15 mm |
| October | 6.2 °C | 20.1 °C | 90.17 mm |
| November | 0.7 °C | 12.5 °C | 97.79 mm |
| December | -3.5 °C | 6.3 °C | 89.92 mm |
| Annual | 6.2 °C | 18.3 °C | 1242.06 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 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 |