| 2023 Hardiness Zone: | Zone 5a: -20°F to -15°F |
| 2012 Hardiness Zone: | Zone 5a: -20°F to -15°F Zone 4b: -25°F to -20°F |
| 1990 Hardiness Zone: | Zone 4b: -25F to -20F |
| Average First Frost Date: | Sep. 21 - Sep. 30 |
| Average Last Frost Date: | Jun. 1 - Jun. 10 |
| Koppen-Geiger Climate Zone: | Dfb - Humid Continental Mild Summer, Wet All Year |
| Ecoregion: | 50ae - Mio Plateau |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 48654 - Rose City, MI | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 6 | 7 | 16 | 28 | 39 | 48 | 52 | 51 | 43 | 33 | 24 | 14 | 30 |
| Avg Max Temp (°F) | 26 | 30 | 40 | 54 | 68 | 77 | 81 | 78 | 70 | 57 | 43 | 31 | 55 |
| Avg Precip (In.) | 1.77 | 1.29 | 2.03 | 2.35 | 2.68 | 3.15 | 3.22 | 3.8 | 3.48 | 2.46 | 2.28 | 1.9 | 30.41 |