Platte City, Missouri has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 6.3 °C (low) to 18.2 °C (high). Annual precipitation averages 1014.2 Millimeters. Platte City is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -7.8 °C | 3.2 °C | 29.21 mm |
| February | -5.6 °C | 6.2 °C | 36.07 mm |
| March | -0.1 °C | 12.7 °C | 56.9 mm |
| April | 5.7 °C | 18.4 °C | 99.82 mm |
| May | 12 °C | 23.6 °C | 135.64 mm |
| June | 17.6 °C | 28.9 °C | 131.32 mm |
| July | 19.8 °C | 31.3 °C | 119.63 mm |
| August | 18.6 °C | 30.6 °C | 110.49 mm |
| September | 13.7 °C | 26.4 °C | 110.24 mm |
| October | 6.8 °C | 19.8 °C | 90.17 mm |
| November | 0.2 °C | 12.1 °C | 52.32 mm |
| December | -5.2 °C | 5.6 °C | 42.42 mm |
| Annual | 6.3 °C | 18.2 °C | 1014.23 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 6a : -23.3°C to -20.6°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 |