Correctionville, Iowa has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 36 °F (low) to 59.1 °F (high). Annual precipitation averages 31.7 Inches. Correctionville 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 | 8.7 °F | 28.3 °F | 0.72 in. |
| February | 12.8 °F | 33.0 °F | 0.87 in. |
| March | 24.0 °F | 46.5 °F | 1.76 in. |
| April | 34.6 °F | 60.5 °F | 3.3 in. |
| May | 47.2 °F | 71.7 °F | 4.23 in. |
| June | 58.4 °F | 81.7 °F | 5.05 in. |
| July | 61.8 °F | 84.5 °F | 3.95 in. |
| August | 59.4 °F | 82.2 °F | 4.2 in. |
| September | 50.0 °F | 76.7 °F | 2.86 in. |
| October | 36.9 °F | 63.4 °F | 2.34 in. |
| November | 24.2 °F | 46.9 °F | 1.37 in. |
| December | 14.1 °F | 33.4 °F | 1.06 in. |
| Annual | 36 °F | 59.1 °F | 31.71 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 | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |