| 2023 Hardiness Zone: | Zone 6a: -10°F to -5°F | |
| 2012 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 5b: -15°F to -10°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: | 56d - Michigan Lake Plain | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 46360 - Michigan City, IN | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 16 | 20 | 29 | 39 | 49 | 59 | 64 | 62 | 55 | 44 | 34 | 22 | 41 |
| Avg Max Temp (°F) | 31 | 36 | 48 | 59 | 71 | 80 | 84 | 82 | 75 | 64 | 49 | 36 | 60 |
| Avg Precip (In.) | 2.14 | 1.75 | 2.81 | 3.51 | 3.65 | 4.32 | 3.67 | 3.8 | 3.78 | 3.09 | 3.49 | 2.87 | 38.89 |