Maloy, 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 16.1 °C (high). Annual precipitation averages 961.9 Millimeters. Maloy 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. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -10.4 °C | 0.1 °C | 21.84 mm |
| February | -8.1 °C | 2.9 °C | 33.02 mm |
| March | -2.1 °C | 10 °C | 56.64 mm |
| April | 3.8 °C | 16.7 °C | 95.5 mm |
| May | 10.4 °C | 22.2 °C | 139.7 mm |
| June | 15.9 °C | 27.2 °C | 135.13 mm |
| July | 18.2 °C | 29.7 °C | 116.59 mm |
| August | 16.9 °C | 28.8 °C | 106.68 mm |
| September | 11.9 °C | 24.9 °C | 91.44 mm |
| October | 5 °C | 18.1 °C | 77.98 mm |
| November | -1.6 °C | 9.7 °C | 52.07 mm |
| December | -7.3 °C | 2.8 °C | 35.31 mm |
| Annual | 4.4 °C | 16.1 °C | 961.9 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| 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 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |