Wildwood, Missouri has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 8.8 °C (low) to 19.4 °C (high). Annual precipitation averages 1108.4 Millimeters. Wildwood is located in USDA Plant Hardiness Zone 7a. 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 | -3.7 °C | 6.1 °C | 68.58 mm |
| February | -2.3 °C | 8.4 °C | 62.48 mm |
| March | 2.4 °C | 14.3 °C | 92.96 mm |
| April | 8.1 °C | 19.7 °C | 121.67 mm |
| May | 13.6 °C | 24.6 °C | 129.79 mm |
| June | 18.6 °C | 29.3 °C | 114.81 mm |
| July | 20.8 °C | 31.4 °C | 98.55 mm |
| August | 19.7 °C | 30.7 °C | 90.93 mm |
| September | 15.8 °C | 27.1 °C | 82.8 mm |
| October | 9.7 °C | 20.5 °C | 85.6 mm |
| November | 3.6 °C | 13.4 °C | 90.42 mm |
| December | -1 °C | 7.6 °C | 69.85 mm |
| Annual | 8.8 °C | 19.4 °C | 1108.44 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 7a : -17.8°C to -15°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |