Modale, Iowa has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 39.2 °F (low) to 61.2 °F (high). Annual precipitation averages 32.1 Inches. Modale 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. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 12.3 °F | 31.6 °F | 0.73 in. |
| February | 16.1 °F | 36.4 °F | 0.93 in. |
| March | 27.0 °F | 49.4 °F | 1.78 in. |
| April | 38.0 °F | 62.4 °F | 3.31 in. |
| May | 50.5 °F | 73.0 °F | 4.67 in. |
| June | 61.3 °F | 82.9 °F | 4.93 in. |
| July | 65.1 °F | 86.4 °F | 3.48 in. |
| August | 62.3 °F | 84.3 °F | 3.9 in. |
| September | 53.0 °F | 78.1 °F | 3.35 in. |
| October | 40.2 °F | 65.0 °F | 2.39 in. |
| November | 27.5 °F | 49.4 °F | 1.42 in. |
| December | 17.3 °F | 35.8 °F | 1.25 in. |
| Annual | 39.2 °F | 61.2 °F | 32.14 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| 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 | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |