| 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 48205 - Detroit, MI | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 19 | 21 | 29 | 39 | 50 | 60 | 65 | 64 | 56 | 45 | 35 | 25 | 42 |
| Avg Max Temp (°F) | 32 | 35 | 45 | 58 | 71 | 79 | 84 | 82 | 74 | 62 | 49 | 37 | 59 |
| Avg Precip (In.) | 1.85 | 1.84 | 2.43 | 3.17 | 2.87 | 3.25 | 3.34 | 3.36 | 3.36 | 2.42 | 2.7 | 2.47 | 33.07 |