Wyoming, Iowa has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 37.6 °F (low) to 58.1 °F (high). Annual precipitation averages 38.2 Inches. 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 | 10.7 °F | 27.7 °F | 1.34 in. |
| February | 14.3 °F | 32.1 °F | 1.56 in. |
| March | 25.7 °F | 45.3 °F | 2.3 in. |
| April | 36.6 °F | 59.6 °F | 3.77 in. |
| May | 48.4 °F | 70.8 °F | 4.5 in. |
| June | 58.7 °F | 80.1 °F | 5.32 in. |
| July | 62.0 °F | 83.0 °F | 4.44 in. |
| August | 59.6 °F | 81.4 °F | 4.3 in. |
| September | 50.8 °F | 75.1 °F | 3.67 in. |
| October | 39.1 °F | 62.2 °F | 3.03 in. |
| November | 27.5 °F | 46.4 °F | 2.22 in. |
| December | 17.2 °F | 33.4 °F | 1.74 in. |
| Annual | 37.6 °F | 58.1 °F | 38.19 in. |
| 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 : -20°F to -15°F |
| Plant Hardiness Zone - 2012 | Zone 5a : -20°F to -15°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |