Kirkville, Iowa has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 4.7 °C (low) to 15.8 °C (high). Annual precipitation averages 963.7 Millimeters. Kirkville is located in USDA Plant Hardiness Zone 5b. 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 | -10.1 °C | -0.6 °C | 32.26 mm |
| February | -8 °C | 1.9 °C | 39.12 mm |
| March | -2.1 °C | 9.3 °C | 55.88 mm |
| April | 4.2 °C | 16.5 °C | 96.27 mm |
| May | 10.9 °C | 22.2 °C | 130.05 mm |
| June | 16.6 °C | 27.7 °C | 136.65 mm |
| July | 18.4 °C | 29.6 °C | 107.19 mm |
| August | 17.2 °C | 28.4 °C | 99.57 mm |
| September | 12.2 °C | 24.8 °C | 101.35 mm |
| October | 5.5 °C | 17.9 °C | 70.36 mm |
| November | -1.2 °C | 9.3 °C | 55.12 mm |
| December | -6.7 °C | 2.4 °C | 39.88 mm |
| Annual | 4.7 °C | 15.8 °C | 963.7 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 5b : -26.1°C to -23.3°C |
| Plant Hardiness Zone - 2012 | Zone 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |