| 2023 Hardiness Zone: | Zone 4b: -25°F to -20°F Zone 4a: -30°F to -25°F |
| 2012 Hardiness Zone: | Zone 3b: -35°F to -30°F Zone 4a: -30°F to -25°F |
| 1990 Hardiness Zone: | Zone 3b: -35F to -30F |
| Average First Frost Date: | Sep.11 - Sep. 20 |
| Average Last Frost Date: | Jun. 1 - Jun. 10 |
| Koppen-Geiger Climate Zone: | Dfb - Humid Continental Mild Summer, Wet All Year |
| Ecoregion: | 50v - Winegar Dead Ice Moraine |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 49920 - Crystal Falls, MI | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | -2 | 2 | 13 | 27 | 38 | 47 | 52 | 51 | 42 | 32 | 21 | 7 | 28 |
| Avg Max Temp (°F) | 21 | 26 | 37 | 51 | 66 | 74 | 78 | 76 | 66 | 54 | 37 | 25 | 51 |
| Avg Precip (In.) | 1.28 | .88 | 1.81 | 2.27 | 3.06 | 3.69 | 3.61 | 3.78 | 3.76 | 2.71 | 2.08 | 1.39 | 30.31 |