| 2023 Hardiness Zone: | 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. 21 - Oct. 31 |
| 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 48206 - Detroit, MI | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 18 | 20 | 28 | 38 | 49 | 59 | 64 | 62 | 54 | 43 | 34 | 24 | 41 |
| Avg Max Temp (°F) | 32 | 35 | 45 | 58 | 71 | 80 | 84 | 82 | 75 | 62 | 49 | 37 | 59 |
| Avg Precip (In.) | 1.94 | 1.84 | 2.51 | 3.17 | 2.9 | 3.4 | 3.22 | 3.17 | 3.37 | 2.44 | 2.72 | 2.49 | 33.17 |