Crystal Falls, Michigan has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 28.8 °F (low) to 50.9 °F (high). Annual precipitation averages 30.3 Inches. 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 | 2.8 °F | 21.7 °F | 1.29 in. |
| February | 3.1 °F | 25.9 °F | 1.1 in. |
| March | 12.5 °F | 37.2 °F | 1.51 in. |
| April | 26.1 °F | 49.4 °F | 2.58 in. |
| May | 38.7 °F | 64.1 °F | 3.18 in. |
| June | 48.6 °F | 73.3 °F | 3.72 in. |
| July | 52.8 °F | 77.5 °F | 3.74 in. |
| August | 51.2 °F | 75.4 °F | 2.99 in. |
| September | 43.8 °F | 67.5 °F | 3.5 in. |
| October | 32.8 °F | 53.2 °F | 3.26 in. |
| November | 22.4 °F | 38.5 °F | 1.83 in. |
| December | 10.5 °F | 26.8 °F | 1.55 in. |
| Annual | 28.8 °F | 50.9 °F | 30.25 in. |
| 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 : -30°F to -25°F |
| Plant Hardiness Zone - 2012 | Zone 4a : -30°F to -25°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |