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: 918 PM CST Thu Nov 13 2025
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Rest Of Tonight: South winds 10 to 20 kt. Mostly cloudy late in the evening then clearing. Waves 1 to 2 ft.

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

Friday Night: South winds 10 to 15 kt increasing to 15 to 20 kt. Partly cloudy in the evening, then becoming mostly cloudy. waves 1 to 3 ft.

Saturday: Southwest winds around 20 kt becoming west in the afternoon. Slight chance of rain in the afternoon. Waves 2 to 4 ft.







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

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