Waucoma, Iowa has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 2.4 °C (low) to 13.5 °C (high). Annual precipitation averages 953 Millimeters. Waucoma is located in USDA Plant Hardiness Zone 5a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -13.3 °C | -3.8 °C | 26.16 mm |
| February | -11.2 °C | -1.4 °C | 27.43 mm |
| March | -4.5 °C | 5.9 °C | 51.31 mm |
| April | 1.9 °C | 14.2 °C | 99.06 mm |
| May | 8.6 °C | 20.8 °C | 119.13 mm |
| June | 14.6 °C | 26.2 °C | 154.18 mm |
| July | 16.3 °C | 27.9 °C | 121.16 mm |
| August | 14.9 °C | 26.8 °C | 101.35 mm |
| September | 10.3 °C | 23.4 °C | 98.55 mm |
| October | 3.4 °C | 16 °C | 71.12 mm |
| November | -3.3 °C | 6.8 °C | 46.48 mm |
| December | -9.5 °C | -0.6 °C | 37.08 mm |
| Annual | 2.4 °C | 13.5 °C | 953.01 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| 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 | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |