Last Update: 312 AM CDT Mon Mar 31 2025

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Chicago, IL Local Forecast Office

7NM NNW Gary IN

Marine Zone Forecast

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.



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312 AM CDT Mon Mar 31 2025
 
 

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