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Coastal Waters Forecast for Calumet Harbor IL to Gary IN (LMZ743) (Text-Only)
NWS Forecast for: Calumet Harbor IL to Gary IN (LMZ743)
Issued by: National Weather Service Chicago, IL
Last Update: 302 PM CDT Thu Jul 3 2025
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Tonight: East winds 5 to 10 kt becoming south late. Mostly clear. Waves 1 to 2 ft subsiding to 1 ft or less.

Friday: South winds 5 to 10 kt becoming southeast in the afternoon. Slight chance of showers in the morning. Waves 1 ft or less.

Friday Night: South winds around 10 kt. Mostly clear. Waves around 1 ft.

Saturday: South winds 10 to 15 kt. Mostly sunny. Waves 1 to 2 ft.







Zone Forecast: Calumet Harbor IL to Gary IN (LMZ743)

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