| 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. 11 - Oct. 20 |
| Average Last Frost Date: | May 11 - May 20 |
| Koppen-Geiger Climate Zone: | Dfa - Humid Continental Hot Summers |
| Ecoregion: | 56b - Elkhart Till Plains |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 49067 - Marcellus, MI | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 15 | 17 | 26 | 36 | 47 | 57 | 61 | 59 | 51 | 41 | 31 | 21 | 39 |
| Avg Max Temp (°F) | 31 | 35 | 46 | 59 | 71 | 80 | 84 | 81 | 74 | 62 | 48 | 35 | 59 |
| Avg Precip (In.) | 2.19 | 1.76 | 2.61 | 3.46 | 3.6 | 3.78 | 3.72 | 3.8 | 3.84 | 3.12 | 3.18 | 2.83 | 37.88 |