Jasper, Michigan has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 39.3 °F (low) to 59.2 °F (high). Annual precipitation averages 35.6 Inches. Jasper is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 16.8 °F | 31.9 °F | 2.36 in. |
| February | 17.9 °F | 35.1 °F | 2.06 in. |
| March | 26.2 °F | 45.2 °F | 2.48 in. |
| April | 36.9 °F | 58.6 °F | 3.38 in. |
| May | 48.4 °F | 70.2 °F | 3.87 in. |
| June | 58.2 °F | 79.8 °F | 3.61 in. |
| July | 61.2 °F | 83.7 °F | 3.26 in. |
| August | 59.3 °F | 81.6 °F | 3.43 in. |
| September | 51.6 °F | 75.6 °F | 3.03 in. |
| October | 40.7 °F | 62.6 °F | 2.87 in. |
| November | 31.0 °F | 48.6 °F | 2.87 in. |
| December | 22.8 °F | 37.0 °F | 2.33 in. |
| Annual | 39.3 °F | 59.2 °F | 35.55 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6a : -10°F to -5°F |
| Plant Hardiness Zone - 2012 | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |