Interlochen, Michigan has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 2.2 °C (low) to 12.8 °C (high). Annual precipitation averages 882.4 Millimeters. Interlochen is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -9.8 °C | -2.4 °C | 59.44 mm |
| February | -10 °C | -1 °C | 43.18 mm |
| March | -6 °C | 4.6 °C | 51.31 mm |
| April | -0.2 °C | 12 °C | 79.25 mm |
| May | 6 °C | 19.3 °C | 80.01 mm |
| June | 11.6 °C | 24.8 °C | 77.72 mm |
| July | 14.2 °C | 27 °C | 73.66 mm |
| August | 13.6 °C | 26.1 °C | 80.52 mm |
| September | 9.8 °C | 21.9 °C | 90.42 mm |
| October | 4 °C | 14.4 °C | 105.92 mm |
| November | -1.2 °C | 6.6 °C | 76.2 mm |
| December | -5.8 °C | 0.6 °C | 64.77 mm |
| Annual | 2.2 °C | 12.8 °C | 882.4 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6a : -23.3°C to -20.6°C |
| Plant Hardiness Zone - 2012 | Zone 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |