| 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 |
| 1990 Hardiness Zone: | Zone 6a: -10F to -5F |
| Average First Frost Date: | Oct. 11 - Oct. 20 |
| Average Last Frost Date: | May 1 - May 10 |
| Koppen-Geiger Climate Zone: | Dfa - Humid Continental Hot Summers |
| Ecoregion: | 57a - Maumee Lake Plains |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 48335 - Farmington, MI | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 16 | 18 | 27 | 37 | 48 | 57 | 61 | 60 | 52 | 41 | 32 | 22 | 39 |
| Avg Max Temp (°F) | 31 | 35 | 45 | 58 | 71 | 79 | 84 | 81 | 74 | 62 | 48 | 36 | 59 |
| Avg Precip (In.) | 1.79 | 1.71 | 2.42 | 3.06 | 2.91 | 3.34 | 2.96 | 3.24 | 3.26 | 2.39 | 2.7 | 2.41 | 32.2 |