East Peru, Iowa has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 4.3 °C (low) to 15.8 °C (high). Annual precipitation averages 920.2 Millimeters. East Peru 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. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -10.7 °C | -0.6 °C | 23.88 mm |
| February | -8.4 °C | 2.1 °C | 32.51 mm |
| March | -2.4 °C | 9.2 °C | 53.59 mm |
| April | 3.8 °C | 16.4 °C | 95 mm |
| May | 10.3 °C | 22.1 °C | 133.35 mm |
| June | 15.9 °C | 27.3 °C | 124.71 mm |
| July | 18.3 °C | 29.7 °C | 108.71 mm |
| August | 16.8 °C | 28.8 °C | 101.6 mm |
| September | 11.9 °C | 25.1 °C | 93.47 mm |
| October | 5.1 °C | 17.9 °C | 67.56 mm |
| November | -1.6 °C | 9.4 °C | 50.8 mm |
| December | -7.5 °C | 2.2 °C | 35.05 mm |
| Annual | 4.3 °C | 15.8 °C | 920.23 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| 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 5a : -28.9°C to -26.1°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |