| 2023 Hardiness Zone: | Zone 5a: -20°F to -15°F Zone 5b: -15°F to -10°F | |
| 2012 Hardiness Zone: | Zone 5a: -20°F to -15°F Zone 5b: -15°F to -10°F | |
| 1990 Hardiness Zone: | Zone 5a: -20F to -15F | |
| Average First Frost Date: | Oct. 1 - Oct. 10 | |
| Average Last Frost Date: | May 21 - May 31 | |
| Koppen-Geiger Climate Zone: | Dfb - Humid Continental Mild Summer, Wet All Year | |
| Ecoregion: | 50ah - Tawas Lake Plain | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 48659 - Sterling, MI | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 10 | 11 | 20 | 31 | 42 | 51 | 56 | 54 | 46 | 36 | 28 | 18 | 34 |
| Avg Max Temp (°F) | 28 | 31 | 41 | 54 | 68 | 77 | 81 | 79 | 71 | 58 | 45 | 33 | 55 |
| Avg Precip (In.) | 1.73 | 1.26 | 2.04 | 2.61 | 2.84 | 3.18 | 2.75 | 3.77 | 3.46 | 2.56 | 2.36 | 1.86 | 30.42 |