Cadillac, Michigan has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 33.7 °F (low) to 53.8 °F (high). Annual precipitation averages 35.3 Inches. 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 | 11.2 °F | 26.3 °F | 2.06 in. |
| February | 10.6 °F | 29.2 °F | 1.65 in. |
| March | 18.1 °F | 39.6 °F | 2.02 in. |
| April | 30.5 °F | 52.4 °F | 3.49 in. |
| May | 42.4 °F | 65.7 °F | 3.56 in. |
| June | 52.1 °F | 75.3 °F | 3.61 in. |
| July | 55.8 °F | 79.3 °F | 3.39 in. |
| August | 54.6 °F | 77.4 °F | 3.36 in. |
| September | 46.7 °F | 70.1 °F | 3.18 in. |
| October | 36.7 °F | 56.1 °F | 3.78 in. |
| November | 27.6 °F | 42.6 °F | 3.0 in. |
| December | 18.6 °F | 31.4 °F | 2.21 in. |
| Annual | 33.7 °F | 53.8 °F | 35.31 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 5a : -20°F to -15°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |