


NWS Forecast for: Calumet Harbor IL to Gary IN (LMZ743) Issued by: National Weather Service Chicago, IL Last Update: 312 AM CDT Mon Mar 31 2025 | |
Today: Northwest winds 20 to 25 kt becoming north. Mostly cloudy. Waves 4 to 7 ft occasionally to 9 ft building to 6 to 9 ft occasionally to 12 ft. Tonight: Northeast winds 10 to 20 kt. Mostly clear. Waves 4 to 7 ft occasionally to 9 ft subsiding to 3 to 5 ft. Tuesday: East winds 10 to 15 kt. Mostly sunny in the morning, then becoming mostly cloudy. Waves 2 to 4 ft subsiding to 1 to 3 ft. Tuesday Night: East winds 20 to 25 kt. Slight chance of showers in the evening, then showers with thunderstorms likely overnight. Waves 2 to 4 ft building to 4 to 6 ft occasionally to 8 ft. A small craft advisory will likely be needed. | |
Zone Forecast: Calumet Harbor IL to Gary IN (LMZ743) | |
Visit your local NWS office at: https://www.weather.gov/lot |