| 2023 Hardiness Zone: | Zone 4b: -25°F to -20°F Zone 4a: -30°F to -25°F |
| 2012 Hardiness Zone: | Zone 4a: -30°F to -25°F |
| 1990 Hardiness Zone: | Zone 3b: -35F to -30F |
| 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: | 50w - Michigamme Highland |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 49879 - Republic, MI | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 0 | 3 | 12 | 25 | 37 | 46 | 51 | 50 | 42 | 32 | 21 | 8 | 27 |
| Avg Max Temp (°F) | 22 | 27 | 37 | 51 | 66 | 74 | 78 | 76 | 66 | 54 | 38 | 26 | 51 |
| Avg Precip (In.) | 1.72 | 1.23 | 2.25 | 2.36 | 3.08 | 3.4 | 3.69 | 3.76 | 3.85 | 3.18 | 2.44 | 1.74 | 32.7 |