Wilson City, Missouri has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 9 °C (low) to 20.2 °C (high). Annual precipitation averages 1280.9 Millimeters. Wilson City is located in USDA Plant Hardiness Zone 7b. The growing season typically runs from the last frost around Mar. 21 - Mar. 31 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -2.7 °C | 6.3 °C | 98.3 mm |
| February | -1.2 °C | 9.2 °C | 100.58 mm |
| March | 3.3 °C | 14.7 °C | 123.19 mm |
| April | 8.7 °C | 20.8 °C | 132.33 mm |
| May | 14.5 °C | 25.8 °C | 136.65 mm |
| June | 19.1 °C | 30.3 °C | 103.63 mm |
| July | 20.9 °C | 31.9 °C | 104.39 mm |
| August | 19.6 °C | 31.2 °C | 72.9 mm |
| September | 15.1 °C | 28 °C | 85.6 mm |
| October | 8.4 °C | 21.9 °C | 100.84 mm |
| November | 2.9 °C | 14.4 °C | 108.97 mm |
| December | -1.1 °C | 8.2 °C | 113.54 mm |
| Annual | 9 °C | 20.2 °C | 1280.92 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 7b : -15°C to -12.2°C |
| Plant Hardiness Zone - 2012 | Zone 7a : -17.8°C to -15°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |