| 2023 Hardiness Zone: | Zone 6a: -10°F to -5°F |
| 2012 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 6b: -5°F to 0°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 21 - May 31 |
| Koppen-Geiger Climate Zone: | Dfb - Humid Continental Mild Summer, Wet All Year |
| Ecoregion: | 51n - Platte River Outwash |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 49650 - Lake Ann, MI | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 14 | 15 | 22 | 32 | 42 | 51 | 57 | 56 | 49 | 39 | 30 | 20 | 36 |
| Avg Max Temp (°F) | 28 | 31 | 41 | 54 | 68 | 77 | 81 | 79 | 70 | 58 | 44 | 33 | 55 |
| Avg Precip (In.) | 2.63 | 1.72 | 2.13 | 2.59 | 2.61 | 3.11 | 2.99 | 3.49 | 4.06 | 3.29 | 3.03 | 2.67 | 34.32 |