Kalkaska, Michigan has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 33.7 °F (low) to 53.7 °F (high). Annual precipitation averages 33.7 Inches. Kalkaska is located in USDA Plant Hardiness Zone 5a. The growing season typically runs from the last frost around May 21 - May 31 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 11.8 °F | 26.4 °F | 2.09 in. |
| February | 11.0 °F | 29.0 °F | 1.59 in. |
| March | 18.2 °F | 39.3 °F | 1.8 in. |
| April | 29.9 °F | 51.9 °F | 2.98 in. |
| May | 41.6 °F | 65.7 °F | 3.16 in. |
| June | 51.3 °F | 75.2 °F | 3.27 in. |
| July | 55.2 °F | 79.1 °F | 3.07 in. |
| August | 54.0 °F | 77.3 °F | 3.05 in. |
| September | 46.9 °F | 70.0 °F | 3.59 in. |
| October | 37.0 °F | 56.1 °F | 3.96 in. |
| November | 28.0 °F | 42.7 °F | 2.93 in. |
| December | 19.4 °F | 31.7 °F | 2.21 in. |
| Annual | 33.7 °F | 53.7 °F | 33.7 in. |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 21 - May 31 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5a : -20°F to -15°F |
| Plant Hardiness Zone - 2012 | Zone 4b : -25°F to -20°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |