Cresco, Iowa has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 34.4 °F (low) to 54.8 °F (high). Annual precipitation averages 37.5 Inches. 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 | 6.0 °F | 23.4 °F | 1.07 in. |
| February | 9.7 °F | 27.8 °F | 1.13 in. |
| March | 21.8 °F | 40.7 °F | 1.87 in. |
| April | 33.5 °F | 55.8 °F | 3.83 in. |
| May | 45.9 °F | 68.1 °F | 4.46 in. |
| June | 56.4 °F | 77.8 °F | 6.15 in. |
| July | 59.8 °F | 81.2 °F | 4.68 in. |
| August | 57.1 °F | 79.2 °F | 4.61 in. |
| September | 48.7 °F | 72.8 °F | 3.69 in. |
| October | 36.5 °F | 59.1 °F | 2.74 in. |
| November | 24.5 °F | 42.5 °F | 1.82 in. |
| December | 13.0 °F | 29.1 °F | 1.42 in. |
| Annual | 34.4 °F | 54.8 °F | 37.47 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 4b : -25°F to -20°F |
| Plant Hardiness Zone - 2012 | Zone 4b : -25°F to -20°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |