Struble, Iowa has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 36.4 °F (low) to 58.3 °F (high). Annual precipitation averages 29.3 Inches. Struble is located in USDA Plant Hardiness Zone 5a. 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 | 8.6 °F | 27.2 °F | 0.68 in. |
| February | 12.7 °F | 32.1 °F | 0.8 in. |
| March | 24.2 °F | 45.0 °F | 1.67 in. |
| April | 35.0 °F | 59.5 °F | 3.09 in. |
| May | 47.9 °F | 71.2 °F | 3.98 in. |
| June | 59.1 °F | 81.4 °F | 4.43 in. |
| July | 62.4 °F | 84.3 °F | 3.34 in. |
| August | 59.8 °F | 82.1 °F | 3.5 in. |
| September | 50.4 °F | 75.9 °F | 3.12 in. |
| October | 37.7 °F | 62.7 °F | 2.42 in. |
| November | 24.7 °F | 45.8 °F | 1.3 in. |
| December | 14.2 °F | 32.1 °F | 0.96 in. |
| Annual | 36.4 °F | 58.3 °F | 29.29 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5a : -20°F to -15°F |
| Plant Hardiness Zone - 2012 | Zone 5a : -20°F to -15°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |