Avoca, Minnesota has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 1.6 °C (low) to 12.4 °C (high). Annual precipitation averages 760.2 Millimeters. Avoca is located in USDA Plant Hardiness Zone 5a. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -14.4 °C | -5 °C | 19.81 mm |
| February | -12.3 °C | -2.6 °C | 23.88 mm |
| March | -5.8 °C | 4.1 °C | 39.12 mm |
| April | 0.8 °C | 12.6 °C | 77.47 mm |
| May | 8.1 °C | 19.8 °C | 97.54 mm |
| June | 14.4 °C | 25.6 °C | 115.06 mm |
| July | 16.3 °C | 27.6 °C | 91.19 mm |
| August | 14.8 °C | 26.2 °C | 88.65 mm |
| September | 10.1 °C | 22.6 °C | 86.87 mm |
| October | 2.7 °C | 14.7 °C | 58.67 mm |
| November | -4.6 °C | 5.4 °C | 32.51 mm |
| December | -10.9 °C | -2.2 °C | 29.46 mm |
| Annual | 1.6 °C | 12.4 °C | 760.23 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5a : -28.9°C to -26.1°C |
| Plant Hardiness Zone - 2012 | Zone 4b : -31.7°C to -28.9°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |