Wyoming, Iowa has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 3.1 °C (low) to 14.5 °C (high). Annual precipitation averages 970 Millimeters. Wyoming 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 | -11.8 °C | -2.4 °C | 34.04 mm |
| February | -9.8 °C | 0.1 °C | 39.62 mm |
| March | -3.5 °C | 7.4 °C | 58.42 mm |
| April | 2.6 °C | 15.3 °C | 95.76 mm |
| May | 9.1 °C | 21.6 °C | 114.3 mm |
| June | 14.8 °C | 26.7 °C | 135.13 mm |
| July | 16.7 °C | 28.3 °C | 112.78 mm |
| August | 15.3 °C | 27.4 °C | 109.22 mm |
| September | 10.4 °C | 23.9 °C | 93.22 mm |
| October | 3.9 °C | 16.8 °C | 76.96 mm |
| November | -2.5 °C | 8 °C | 56.39 mm |
| December | -8.2 °C | 0.8 °C | 44.2 mm |
| Annual | 3.1 °C | 14.5 °C | 970.04 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 125-150 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 | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |