Kingston, Missouri has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 5.5 °C (low) to 17.5 °C (high). Annual precipitation averages 1014.2 Millimeters. Kingston is located in USDA Plant Hardiness Zone 6a. 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 | -8.5 °C | 2.2 °C | 31.24 mm |
| February | -6.4 °C | 5.2 °C | 40.39 mm |
| March | -0.8 °C | 11.7 °C | 66.8 mm |
| April | 4.9 °C | 17.8 °C | 99.06 mm |
| May | 11.3 °C | 23.2 °C | 143.76 mm |
| June | 16.7 °C | 28.3 °C | 133.6 mm |
| July | 19.1 °C | 30.8 °C | 110.24 mm |
| August | 17.8 °C | 30.1 °C | 114.05 mm |
| September | 12.6 °C | 25.8 °C | 100.33 mm |
| October | 6 °C | 19.2 °C | 80.52 mm |
| November | -0.4 °C | 11.4 °C | 51.82 mm |
| December | -5.8 °C | 4.6 °C | 42.42 mm |
| Annual | 5.5 °C | 17.5 °C | 1014.23 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| 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 |