Crescent, Iowa has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 4.4 °C (low) to 16.4 °C (high). Annual precipitation averages 846.3 Millimeters. Crescent is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -10.6 °C | 0 °C | 20.32 mm |
| February | -8.4 °C | 2.8 °C | 24.64 mm |
| March | -2.4 °C | 9.9 °C | 46.23 mm |
| April | 3.8 °C | 17.2 °C | 85.34 mm |
| May | 10.7 °C | 22.8 °C | 127 mm |
| June | 16.5 °C | 28.4 °C | 124.21 mm |
| July | 18.9 °C | 30.4 °C | 92.2 mm |
| August | 17.3 °C | 29.3 °C | 106.17 mm |
| September | 12.1 °C | 25.7 °C | 82.04 mm |
| October | 4.9 °C | 18.4 °C | 66.29 mm |
| November | -2.1 °C | 9.6 °C | 38.1 mm |
| December | -7.7 °C | 2.4 °C | 33.78 mm |
| Annual | 4.4 °C | 16.4 °C | 846.32 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 5b : -26.1°C to -23.3°C |
| Plant Hardiness Zone - 2012 | Zone 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |