| 2023 Hardiness Zone: | Zone 6a: -10°F to -5°F |
| 2012 Hardiness Zone: | 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: | May 1 - May 10 |
| Koppen-Geiger Climate Zone: | Dfa - Humid Continental Hot Summers |
| Ecoregion: | 54b - Chicago Lake Plain |
| Heat Zone Days: | 1 - 7 days Over 86°F |
Annual Climate Data for ZIP Code 46405 - Lake Station, IN | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 15 | 19 | 29 | 38 | 48 | 58 | 64 | 62 | 54 | 43 | 32 | 21 | 40 |
| Avg Max Temp (°F) | 31 | 37 | 48 | 59 | 71 | 80 | 84 | 82 | 76 | 64 | 49 | 36 | 60 |
| Avg Precip (In.) | 1.94 | 1.59 | 2.7 | 3.5 | 3.89 | 4.43 | 3.52 | 3.56 | 3.65 | 2.94 | 3.34 | 2.56 | 37.62 |