| 2023 Hardiness Zone: | 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 48127 - Dearborn Heights, MI | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 17 | 19 | 27 | 37 | 48 | 58 | 62 | 61 | 53 | 41 | 33 | 23 | 40 |
| Avg Max Temp (°F) | 32 | 35 | 46 | 58 | 71 | 80 | 84 | 83 | 75 | 63 | 49 | 37 | 59 |
| Avg Precip (In.) | 1.95 | 1.84 | 2.57 | 3.19 | 2.97 | 3.54 | 3.12 | 3.07 | 3.38 | 2.44 | 2.73 | 2.51 | 33.32 |