Crystal Falls, Michigan has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from -1.8 °C (low) to 10.5 °C (high). Annual precipitation averages 768.4 Millimeters. Crystal Falls is located in USDA Plant Hardiness Zone 4a. The growing season typically runs from the last frost around May 21 - May 31 through the first frost around Sep.11 - Sep. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -16.2 °C | -5.7 °C | 32.77 mm |
| February | -16.1 °C | -3.4 °C | 27.94 mm |
| March | -10.8 °C | 2.9 °C | 38.35 mm |
| April | -3.3 °C | 9.7 °C | 65.53 mm |
| May | 3.7 °C | 17.8 °C | 80.77 mm |
| June | 9.2 °C | 22.9 °C | 94.49 mm |
| July | 11.6 °C | 25.3 °C | 95 mm |
| August | 10.7 °C | 24.1 °C | 75.95 mm |
| September | 6.6 °C | 19.7 °C | 88.9 mm |
| October | 0.4 °C | 11.8 °C | 82.8 mm |
| November | -5.3 °C | 3.6 °C | 46.48 mm |
| December | -11.9 °C | -2.9 °C | 39.37 mm |
| Annual | -1.8 °C | 10.5 °C | 768.35 mm |
| Average First Frost Date | Sep.11 - Sep. 20 |
| Average Last Frost Date | May 21 - May 31 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 4a : -34.4°C to -31.7°C |
| Plant Hardiness Zone - 2012 | Zone 4a : -34.4°C to -31.7°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |