Kalkaska, Michigan has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 0.9 °C (low) to 12.1 °C (high). Annual precipitation averages 856 Millimeters. 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 | -11.2 °C | -3.1 °C | 53.09 mm |
| February | -11.7 °C | -1.7 °C | 40.39 mm |
| March | -7.7 °C | 4.1 °C | 45.72 mm |
| April | -1.2 °C | 11.1 °C | 75.69 mm |
| May | 5.3 °C | 18.7 °C | 80.26 mm |
| June | 10.7 °C | 24 °C | 83.06 mm |
| July | 12.9 °C | 26.2 °C | 77.98 mm |
| August | 12.2 °C | 25.2 °C | 77.47 mm |
| September | 8.3 °C | 21.1 °C | 91.19 mm |
| October | 2.8 °C | 13.4 °C | 100.58 mm |
| November | -2.2 °C | 5.9 °C | 74.42 mm |
| December | -7 °C | -0.2 °C | 56.13 mm |
| Annual | 0.9 °C | 12.1 °C | 855.98 mm |
| 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 : -28.9°C to -26.1°C |
| Plant Hardiness Zone - 2012 | Zone 4b : -31.7°C to -28.9°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |