Libertyville, Iowa has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 41 °F (low) to 61.2 °F (high). Annual precipitation averages 38.4 Inches. Libertyville is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 14.8 °F | 31.9 °F | 1.43 in. |
| February | 18.4 °F | 36.4 °F | 1.71 in. |
| March | 29.1 °F | 49.5 °F | 2.3 in. |
| April | 40.0 °F | 62.7 °F | 3.77 in. |
| May | 51.8 °F | 72.8 °F | 5.36 in. |
| June | 61.7 °F | 82.2 °F | 5.08 in. |
| July | 65.3 °F | 85.9 °F | 4.16 in. |
| August | 62.9 °F | 84.1 °F | 3.98 in. |
| September | 54.0 °F | 77.5 °F | 3.65 in. |
| October | 42.4 °F | 64.8 °F | 2.93 in. |
| November | 30.8 °F | 49.5 °F | 2.28 in. |
| December | 20.8 °F | 37.0 °F | 1.7 in. |
| Annual | 41 °F | 61.2 °F | 38.35 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 5b : -15°F to -10°F |
| Plant Hardiness Zone - 2012 | Zone 5b : -15°F to -10°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |