| 2023 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 5b: -15°F to -10°F | |
| 2012 Hardiness Zone: | Zone 5b: -15°F to -10°F | |
| 1990 Hardiness Zone: | Zone 1b: -15F to -10F | |
| Average First Frost Date: | Oct. 1 - Oct. 10 | |
| Average Last Frost Date: | May 11 - May 20 | |
| Koppen-Geiger Climate Zone: | Dfb - Humid Continental Mild Summer, Wet All Year | |
| Ecoregion: | 56g - Lansing Loamy Plain | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 48818 - Crystal, MI | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 13 | 14 | 23 | 34 | 45 | 54 | 59 | 57 | 49 | 38 | 29 | 19 | 36 |
| Avg Max Temp (°F) | 29 | 32 | 43 | 56 | 69 | 78 | 82 | 80 | 72 | 60 | 45 | 34 | 57 |
| Avg Precip (In.) | 1.85 | 1.47 | 2.34 | 3.07 | 3.1 | 3.36 | 2.82 | 3.9 | 3.74 | 2.79 | 2.81 | 2.29 | 33.55 |