| 2023 Hardiness Zone: | Zone 6b: -5°F to 0°F |
| 2012 Hardiness Zone: | 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: | Apr. 21 - Apr. 30 |
| 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 48216 - 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 | 63 | 55 | 44 | 34 | 24 | 41 |
| Avg Max Temp (°F) | 33 | 36 | 46 | 58 | 71 | 80 | 84 | 82 | 75 | 62 | 49 | 38 | 59 |
| Avg Precip (In.) | 1.93 | 1.84 | 2.51 | 3.2 | 2.91 | 3.37 | 3.25 | 3.19 | 3.38 | 2.45 | 2.73 | 2.49 | 33.24 |