Last Update: 246 AM CDT Wed Oct 21 2026

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Chicago, IL Local Forecast Office

20NM NNE Gary IN

Marine Zone Forecast

Today
South winds 5 to 10 kt increasing to 10 to 15 kt. Waves 1 to 2 ft.
Tonight
South winds 5 to 10 kt veering to west. Waves 1 to 2 ft.
Thursday
Northeast winds 5 to 10 kt becoming north. Waves 1 ft or less.
Thursday Night
Northeast winds 5 to 10 kt becoming southeast 10 to 15 kt. Waves 1 ft or less building to 1 to 3 ft.
Friday
Southeast winds 10 to 20 kt. Waves 2 to 4 ft.
Friday Night
Southeast winds 10 to 15 kt becoming south 10 to 20 kt. Waves 1 to 3 ft building to 2 to 4 ft.
Saturday
South winds 15 to 25 kt increasing to 30 kt. Waves 4 to 6 ft occasionally to 8 ft building to 4 to 7 ft occasionally to 9 ft.
Sunday
Southwest winds 10 to 20 kt. Waves 3 to 5 ft.



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246 AM CDT Wed Oct 21 2026
 
 

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