Last Update: 858 PM CDT Sat Oct 4 2025

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Chicago, IL Local Forecast Office

20NM NNE Gary IN

Marine Zone Forecast

Rest Of Tonight
South winds 10 to 20 kt. Waves 4 to 6 ft occasionally to 8 ft.
Sunday
South winds 10 to 20 kt increasing to 30 kt. Waves 3 to 5 ft building to 5 to 8 ft occasionally to 10 ft.
Sunday Night
South winds to 30 kt becoming southwest. Waves 6 to 9 ft occasionally to 12 ft.
Monday
Southwest winds 15 to 25 kt becoming west 10 to 20 kt. Chance of showers. Waves 5 to 8 ft occasionally to 10 ft subsiding to 4 to 6 ft occasionally to 8 ft.
Monday Night
North winds 10 to 15 kt increasing to 10 to 20 kt. Showers. Waves 1 to 3 ft building to 2 to 4 ft.
Tuesday
North winds 10 to 20 kt increasing to 15 to 25 kt. Chance of showers in the morning. Waves 4 to 7 ft occasionally to 9 ft.
Tuesday Night
North winds 10 to 20 kt becoming northeast. Waves 4 to 7 ft occasionally to 9 ft.
Wednesday
Northeast winds 10 to 20 kt diminishing to 10 to 15 kt. Waves 3 to 5 ft subsiding to 2 to 4 ft.
Thursday
Southeast winds 10 to 20 kt becoming south 15 to 25 kt. Waves 4 to 6 ft occasionally to 8 ft.



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858 PM CDT Sat Oct 4 2025
 
 

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