Gentry, Missouri has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 5.3 °C (low) to 17 °C (high). Annual precipitation averages 978.1 Millimeters. Gentry is located in USDA Plant Hardiness Zone 6a. 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 | -9.3 °C | 1.1 °C | 23.62 mm |
| February | -6.8 °C | 4 °C | 32.51 mm |
| March | -1.1 °C | 10.9 °C | 56.64 mm |
| April | 4.8 °C | 17.3 °C | 99.82 mm |
| May | 11.3 °C | 23 °C | 141.22 mm |
| June | 16.5 °C | 28.2 °C | 136.65 mm |
| July | 18.8 °C | 30.7 °C | 122.68 mm |
| August | 17.5 °C | 29.8 °C | 104.39 mm |
| September | 12.5 °C | 25.7 °C | 97.54 mm |
| October | 5.8 °C | 18.8 °C | 77.98 mm |
| November | -0.6 °C | 10.6 °C | 48.26 mm |
| December | -6.3 °C | 3.7 °C | 36.83 mm |
| Annual | 5.3 °C | 17 °C | 978.14 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6a : -23.3°C to -20.6°C |
| Plant Hardiness Zone - 2012 | Zone 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |