Morrisville, Missouri has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 45.3 °F (low) to 67 °F (high). Annual precipitation averages 45.9 Inches. Morrisville is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 22.5 °F | 42.6 °F | 2.39 in. |
| February | 26.0 °F | 47.6 °F | 2.27 in. |
| March | 34.6 °F | 57.3 °F | 3.55 in. |
| April | 44.0 °F | 67.3 °F | 4.78 in. |
| May | 54.4 °F | 75.4 °F | 5.88 in. |
| June | 63.5 °F | 84.0 °F | 4.7 in. |
| July | 67.5 °F | 88.6 °F | 4.21 in. |
| August | 65.8 °F | 88.1 °F | 3.77 in. |
| September | 57.6 °F | 80.9 °F | 4.59 in. |
| October | 45.6 °F | 69.5 °F | 3.67 in. |
| November | 35.1 °F | 56.6 °F | 3.46 in. |
| December | 26.4 °F | 46.1 °F | 2.6 in. |
| Annual | 45.3 °F | 67 °F | 45.87 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 6b : -5°F to 0°F |
| Plant Hardiness Zone - 2012 | Zone 6b : -5°F to 0°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |