| 2023 Hardiness Zone: | Zone 6a: -10°F to -5°F |
| 2012 Hardiness Zone: | Zone 6a: -10°F to -5°F 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: | Dfa - Humid Continental Hot Summers |
| Ecoregion: | 56h - Interlobate Dead Ice Moraines |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 48357 - Highland, MI | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 15 | 16 | 25 | 36 | 47 | 56 | 61 | 59 | 52 | 41 | 31 | 20 | 38 |
| Avg Max Temp (°F) | 29 | 33 | 43 | 56 | 68 | 77 | 82 | 79 | 72 | 59 | 46 | 34 | 57 |
| Avg Precip (In.) | 1.63 | 1.55 | 2.22 | 2.92 | 2.82 | 3.23 | 2.72 | 3.21 | 3.21 | 2.26 | 2.56 | 2.21 | 30.54 |