Cresco, Iowa has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 1.3 °C (low) to 12.7 °C (high). Annual precipitation averages 951.7 Millimeters. Cresco is located in USDA Plant Hardiness Zone 4b. 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 | -14.4 °C | -4.8 °C | 27.18 mm |
| February | -12.4 °C | -2.3 °C | 28.7 mm |
| March | -5.7 °C | 4.8 °C | 47.5 mm |
| April | 0.8 °C | 13.2 °C | 97.28 mm |
| May | 7.7 °C | 20.1 °C | 113.28 mm |
| June | 13.6 °C | 25.4 °C | 156.21 mm |
| July | 15.4 °C | 27.3 °C | 118.87 mm |
| August | 13.9 °C | 26.2 °C | 117.09 mm |
| September | 9.3 °C | 22.7 °C | 93.73 mm |
| October | 2.5 °C | 15.1 °C | 69.6 mm |
| November | -4.2 °C | 5.8 °C | 46.23 mm |
| December | -10.6 °C | -1.6 °C | 36.07 mm |
| Annual | 1.3 °C | 12.7 °C | 951.74 mm |
| 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 4b : -31.7°C to -28.9°C |
| Plant Hardiness Zone - 2012 | Zone 4b : -31.7°C to -28.9°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |