Waukon, Iowa has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 35.8 °F (low) to 55.2 °F (high). Annual precipitation averages 38.3 Inches. Waukon 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 | 8.0 °F | 24.4 °F | 1.07 in. |
| February | 11.0 °F | 29.0 °F | 1.07 in. |
| March | 23.4 °F | 41.9 °F | 1.76 in. |
| April | 34.6 °F | 56.1 °F | 4.15 in. |
| May | 46.5 °F | 68.1 °F | 4.88 in. |
| June | 57.5 °F | 77.6 °F | 6.23 in. |
| July | 61.1 °F | 81.1 °F | 4.69 in. |
| August | 58.7 °F | 79.3 °F | 4.47 in. |
| September | 50.2 °F | 72.6 °F | 4.04 in. |
| October | 38.0 °F | 59.5 °F | 2.71 in. |
| November | 26.0 °F | 43.0 °F | 1.92 in. |
| December | 14.6 °F | 30.1 °F | 1.35 in. |
| Annual | 35.8 °F | 55.2 °F | 38.34 in. |
| 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 : -20°F to -15°F |
| Plant Hardiness Zone - 2012 | Zone 5a : -20°F to -15°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |