Plattsburg, Missouri has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 42.2 °F (low) to 63.8 °F (high). Annual precipitation averages 40.6 Inches. Plattsburg 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 | 16.9 °F | 36.6 °F | 1.18 in. |
| February | 20.8 °F | 41.8 °F | 1.67 in. |
| March | 31.0 °F | 53.8 °F | 2.43 in. |
| April | 41.0 °F | 64.3 °F | 3.89 in. |
| May | 52.5 °F | 73.9 °F | 5.64 in. |
| June | 62.2 °F | 83.0 °F | 5.07 in. |
| July | 66.4 °F | 87.6 °F | 5.25 in. |
| August | 64.2 °F | 86.1 °F | 4.22 in. |
| September | 55.0 °F | 78.5 °F | 4.1 in. |
| October | 42.9 °F | 66.8 °F | 3.38 in. |
| November | 31.5 °F | 52.9 °F | 2.1 in. |
| December | 21.7 °F | 40.7 °F | 1.69 in. |
| Annual | 42.2 °F | 63.8 °F | 40.62 in. |
| 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 6a : -10°F to -5°F |
| Plant Hardiness Zone - 2012 | Zone 5b : -15°F to -10°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |