Highlandville, Missouri has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 7.6 °C (low) to 19.2 °C (high). Annual precipitation averages 1177.1 Millimeters. Highlandville 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 | -4.6 °C | 6.1 °C | 68.33 mm |
| February | -2.8 °C | 8.8 °C | 63.5 mm |
| March | 1.6 °C | 13.8 °C | 108.46 mm |
| April | 6.9 °C | 19.4 °C | 122.43 mm |
| May | 12.6 °C | 23.6 °C | 134.37 mm |
| June | 17.4 °C | 28.3 °C | 112.78 mm |
| July | 19.7 °C | 30.9 °C | 107.19 mm |
| August | 18.7 °C | 30.8 °C | 83.06 mm |
| September | 14.3 °C | 26.8 °C | 116.08 mm |
| October | 7.9 °C | 20.5 °C | 92.46 mm |
| November | 1.9 °C | 13.6 °C | 96.77 mm |
| December | -2.7 °C | 7.8 °C | 71.63 mm |
| Annual | 7.6 °C | 19.2 °C | 1177.06 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 7a : -17.8°C to -15°C |
| Plant Hardiness Zone - 2012 | Zone 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |