Cadillac, Michigan has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 1 °C (low) to 12.1 °C (high). Annual precipitation averages 896.9 Millimeters. Cadillac 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 | -11.6 °C | -3.2 °C | 52.32 mm |
| February | -11.9 °C | -1.6 °C | 41.91 mm |
| March | -7.7 °C | 4.2 °C | 51.31 mm |
| April | -0.8 °C | 11.3 °C | 88.65 mm |
| May | 5.8 °C | 18.7 °C | 90.42 mm |
| June | 11.2 °C | 24.1 °C | 91.69 mm |
| July | 13.2 °C | 26.3 °C | 86.11 mm |
| August | 12.6 °C | 25.2 °C | 85.34 mm |
| September | 8.2 °C | 21.2 °C | 80.77 mm |
| October | 2.6 °C | 13.4 °C | 96.01 mm |
| November | -2.4 °C | 5.9 °C | 76.2 mm |
| December | -7.4 °C | -0.3 °C | 56.13 mm |
| Annual | 1 °C | 12.1 °C | 896.86 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 5a : -28.9°C to -26.1°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |