Jasper, Missouri has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 46.4 °F (low) to 67.8 °F (high). Annual precipitation averages 46.7 Inches. Jasper 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 | 23.7 °F | 43.3 °F | 1.95 in. |
| February | 27.2 °F | 48.4 °F | 2.08 in. |
| March | 35.7 °F | 58.3 °F | 3.37 in. |
| April | 45.1 °F | 67.8 °F | 4.98 in. |
| May | 55.7 °F | 76.0 °F | 6.68 in. |
| June | 64.9 °F | 84.9 °F | 5.5 in. |
| July | 69.2 °F | 89.6 °F | 4.24 in. |
| August | 67.0 °F | 89.3 °F | 3.58 in. |
| September | 58.4 °F | 81.6 °F | 4.59 in. |
| October | 46.6 °F | 70.5 °F | 3.72 in. |
| November | 35.9 °F | 57.5 °F | 3.34 in. |
| December | 27.1 °F | 46.7 °F | 2.62 in. |
| Annual | 46.4 °F | 67.8 °F | 46.65 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 | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |