Sparta, Missouri has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 45.3 °F (low) to 66.2 °F (high). Annual precipitation averages 48.9 Inches. Sparta 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 | 23.2 °F | 42.7 °F | 2.7 in. |
| February | 26.5 °F | 47.4 °F | 2.64 in. |
| March | 34.5 °F | 56.6 °F | 4.48 in. |
| April | 44.3 °F | 66.8 °F | 5.03 in. |
| May | 54.3 °F | 74.4 °F | 5.8 in. |
| June | 63.0 °F | 82.5 °F | 4.48 in. |
| July | 67.2 °F | 87.2 °F | 4.6 in. |
| August | 65.4 °F | 86.6 °F | 3.45 in. |
| September | 57.6 °F | 79.6 °F | 4.6 in. |
| October | 46.0 °F | 68.6 °F | 3.98 in. |
| November | 35.2 °F | 56.1 °F | 4.04 in. |
| December | 26.7 °F | 45.6 °F | 3.14 in. |
| Annual | 45.3 °F | 66.2 °F | 48.94 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 6b : -5°F to 0°F |
| Plant Hardiness Zone - 2012 | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |