Urbandale, Iowa has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 4.3 °C (low) to 15.6 °C (high). Annual precipitation averages 936.3 Millimeters. Urbandale 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 | -10.9 °C | -1.1 °C | 25.91 mm |
| February | -8.7 °C | 1.6 °C | 30.99 mm |
| March | -2.6 °C | 8.8 °C | 55.63 mm |
| April | 3.8 °C | 16.4 °C | 97.28 mm |
| May | 10.4 °C | 22.1 °C | 127.51 mm |
| June | 16.1 °C | 27.4 °C | 138.18 mm |
| July | 18.3 °C | 29.6 °C | 110.74 mm |
| August | 16.9 °C | 28.6 °C | 109.98 mm |
| September | 12.1 °C | 25.1 °C | 86.61 mm |
| October | 5.2 °C | 17.7 °C | 69.6 mm |
| November | -1.7 °C | 9.2 °C | 46.74 mm |
| December | -7.7 °C | 1.9 °C | 37.08 mm |
| Annual | 4.3 °C | 15.6 °C | 936.25 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 5a : -28.9°C to -26.1°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |