Oak Grove Village, Missouri has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 7.2 °C (low) to 19 °C (high). Annual precipitation averages 1138.2 Millimeters. Oak Grove Village is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -5.7 °C | 4.9 °C | 67.06 mm |
| February | -3.8 °C | 7.7 °C | 64.77 mm |
| March | 0.9 °C | 13.2 °C | 93.98 mm |
| April | 6.9 °C | 19.7 °C | 125.73 mm |
| May | 12.4 °C | 24.3 °C | 131.83 mm |
| June | 17.3 °C | 28.7 °C | 110.49 mm |
| July | 19.6 °C | 31.1 °C | 106.68 mm |
| August | 18.5 °C | 30.7 °C | 100.08 mm |
| September | 14.1 °C | 26.7 °C | 94.49 mm |
| October | 7.7 °C | 20.5 °C | 85.09 mm |
| November | 1.7 °C | 13.1 °C | 91.19 mm |
| December | -3.2 °C | 7.1 °C | 66.8 mm |
| Annual | 7.2 °C | 19 °C | 1138.19 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 6b : -20.6°C to -17.8°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |