East Peru, Iowa has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 39.7 °F (low) to 60.4 °F (high). Annual precipitation averages 36.2 Inches. 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 | 12.8 °F | 31.0 °F | 0.94 in. |
| February | 16.8 °F | 35.8 °F | 1.28 in. |
| March | 27.6 °F | 48.6 °F | 2.11 in. |
| April | 38.8 °F | 61.6 °F | 3.74 in. |
| May | 50.5 °F | 71.7 °F | 5.25 in. |
| June | 60.7 °F | 81.2 °F | 4.91 in. |
| July | 65.0 °F | 85.4 °F | 4.28 in. |
| August | 62.3 °F | 83.8 °F | 4.0 in. |
| September | 53.4 °F | 77.1 °F | 3.68 in. |
| October | 41.2 °F | 64.2 °F | 2.66 in. |
| November | 29.1 °F | 48.9 °F | 2.0 in. |
| December | 18.5 °F | 36.0 °F | 1.38 in. |
| Annual | 39.7 °F | 60.4 °F | 36.23 in. |
| 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 : -15°F to -10°F |
| Plant Hardiness Zone - 2012 | Zone 5a : -20°F to -15°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |