Coon Rapids, Iowa has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 3.2 °C (low) to 15.1 °C (high). Annual precipitation averages 875.8 Millimeters. Coon Rapids 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 | -11.9 °C | -1.9 °C | 21.34 mm |
| February | -9.7 °C | 0.7 °C | 27.94 mm |
| March | -3.5 °C | 8.2 °C | 49.53 mm |
| April | 2.5 °C | 15.9 °C | 92.46 mm |
| May | 9.6 °C | 21.9 °C | 126.24 mm |
| June | 15.4 °C | 27.3 °C | 131.83 mm |
| July | 17.4 °C | 29.1 °C | 104.39 mm |
| August | 15.8 °C | 27.9 °C | 94.74 mm |
| September | 10.7 °C | 24.7 °C | 83.57 mm |
| October | 3.9 °C | 17.5 °C | 72.64 mm |
| November | -3 °C | 8.3 °C | 38.35 mm |
| December | -8.7 °C | 1 °C | 32.77 mm |
| Annual | 3.2 °C | 15.1 °C | 875.8 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 5a : -28.9°C to -26.1°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |