Shambaugh, Iowa has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 4.2 °C (low) to 16.6 °C (high). Annual precipitation averages 915.2 Millimeters. Shambaugh 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 | -10.6 °C | 0.6 °C | 20.83 mm |
| February | -8.3 °C | 3.3 °C | 27.94 mm |
| March | -2.2 °C | 10.6 °C | 53.09 mm |
| April | 3.5 °C | 17.1 °C | 85.34 mm |
| May | 10.4 °C | 22.8 °C | 142.75 mm |
| June | 16.3 °C | 27.9 °C | 135.89 mm |
| July | 18.3 °C | 29.8 °C | 116.33 mm |
| August | 16.7 °C | 28.9 °C | 95 mm |
| September | 11.4 °C | 25.7 °C | 82.3 mm |
| October | 4.6 °C | 18.8 °C | 71.63 mm |
| November | -2.2 °C | 10.2 °C | 49.78 mm |
| December | -7.5 °C | 3.2 °C | 34.29 mm |
| Annual | 4.2 °C | 16.6 °C | 915.17 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 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |