| NWS Forecast for: Calumet Harbor IL to Gary IN (LMZ743) Issued by: National Weather Service Chicago, IL Last Update: 232 PM CST Thu Dec 4 2025 | |
Tonight: Nearly calm winds becoming southwest 15 to 20 kt overnight, strongest well offshore. Partly cloudy. Waves 1 to 2 ft. Friday: Southwest winds 15 to 20 kt increasing to 20 to 25 kt in the afternoon. Gradually increasing cloudiness. Waves 1 to 3 ft. Friday Night: Southwest winds 15 to 25 kt becoming west 15 to 20 kt overnight. Chance of snow and freezing drizzle. Waves 1 to 3 ft. Saturday: West winds 10 to 15 kt becoming northwest. Mostly cloudy. Waves 1 to 2 ft. | |
| Zone Forecast: Calumet Harbor IL to Gary IN (LMZ743) | |
Visit your local NWS office at: https://www.weather.gov/lot |