| 2023 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 6b: -5°F to 0°F |
| 2012 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 6b: -5°F to 0°F |
| 1990 Hardiness Zone: | Zone 6b: -5F to 0F |
| Average First Frost Date: | Oct. 11 - Oct. 20 |
| Average Last Frost Date: | May 11 - May 20 |
| Koppen-Geiger Climate Zone: | Dfb - Humid Continental Mild Summer, Wet All Year |
| Ecoregion: | 56d - Michigan Lake Plain |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 49460 - West Olive, MI | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 17 | 19 | 26 | 36 | 46 | 55 | 60 | 59 | 52 | 42 | 33 | 23 | 39 |
| Avg Max Temp (°F) | 30 | 34 | 44 | 55 | 68 | 77 | 81 | 79 | 72 | 60 | 47 | 35 | 57 |
| Avg Precip (In.) | 2.24 | 1.41 | 2.26 | 3.11 | 3.2 | 3.42 | 3.14 | 3.76 | 3.78 | 2.89 | 3.23 | 2.79 | 35.2 |