| 2023 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 5b: -15°F to -10°F | |
| 2012 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 5b: -15°F to -10°F | |
| 1990 Hardiness Zone: | Zone 6a: -10F to -5F | |
| 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: | 57e - Saginaw Lake Plain | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 48723 - Caro, MI | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 14 | 15 | 24 | 34 | 44 | 53 | 58 | 57 | 49 | 39 | 31 | 20 | 37 |
| Avg Max Temp (°F) | 29 | 32 | 43 | 57 | 70 | 79 | 84 | 81 | 73 | 61 | 46 | 34 | 57 |
| Avg Precip (In.) | 1.68 | 1.24 | 2.26 | 2.85 | 2.85 | 3.32 | 2.77 | 3.27 | 4.08 | 2.53 | 2.58 | 2.01 | 31.44 |