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: 902 PM CDT Thu Oct 9 2025
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Rest Of Tonight: Southeast winds 10 to 15 kt becoming south 15 to 20 kt. Mostly clear. Waves 1 to 3 ft building to 2 to 4 ft.

Friday: Southwest winds 15 to 25 kt. Isolated showers or sprinkles. Waves 2 to 4 ft.

Friday Night: West winds 15 to 20 kt becoming northwest 10 to 15 kt overnight. Slight chance of showers in the evening. Waves 1 to 3 ft building to 2 to 4 ft.

Saturday: Northwest winds 10 to 15 kt becoming north in the afternoon. Mostly sunny in the morning, then becoming partly cloudy. Waves 1 to 3 ft building to 2 to 4 ft.







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

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