Piedmont, Missouri has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 45 °F (low) to 68.5 °F (high). Annual precipitation averages 47.6 Inches. Piedmont is located in USDA Plant Hardiness Zone 7a. 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 | 23.1 °F | 43.9 °F | 3.13 in. |
| February | 26.0 °F | 49.2 °F | 3.23 in. |
| March | 34.5 °F | 58.9 °F | 3.97 in. |
| April | 44.4 °F | 70.5 °F | 5.79 in. |
| May | 54.4 °F | 78.1 °F | 5.13 in. |
| June | 63.0 °F | 86.1 °F | 3.96 in. |
| July | 67.2 °F | 89.7 °F | 3.82 in. |
| August | 65.2 °F | 89.0 °F | 3.28 in. |
| September | 57.0 °F | 81.8 °F | 3.84 in. |
| October | 44.4 °F | 70.6 °F | 3.41 in. |
| November | 34.1 °F | 57.7 °F | 4.47 in. |
| December | 26.5 °F | 46.7 °F | 3.55 in. |
| Annual | 45 °F | 68.5 °F | 47.58 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 7a : 0°F to 5°F |
| Plant Hardiness Zone - 2012 | Zone 6b : -5°F to 0°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |