Wiota, Iowa has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 3.6 °C (low) to 15.6 °C (high). Annual precipitation averages 890.8 Millimeters. Wiota is located in USDA Plant Hardiness Zone 5a. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -11.4 °C | -0.9 °C | 21.59 mm |
| February | -9.1 °C | 1.8 °C | 29.72 mm |
| March | -3.1 °C | 9.2 °C | 48.51 mm |
| April | 2.9 °C | 16.4 °C | 90.68 mm |
| May | 9.8 °C | 22.1 °C | 136.14 mm |
| June | 15.6 °C | 27.5 °C | 122.43 mm |
| July | 17.7 °C | 29.4 °C | 102.11 mm |
| August | 16.1 °C | 28.4 °C | 103.63 mm |
| September | 11 °C | 24.9 °C | 86.87 mm |
| October | 4.2 °C | 17.9 °C | 72.14 mm |
| November | -2.7 °C | 9.1 °C | 42.67 mm |
| December | -8.3 °C | 1.8 °C | 34.29 mm |
| Annual | 3.6 °C | 15.6 °C | 890.78 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5a : -28.9°C to -26.1°C |
| Plant Hardiness Zone - 2012 | Zone 5a : -28.9°C to -26.1°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |