Last Update: 241 PM CDT Wed Mar 25 2026

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Chicago, IL Local Forecast Office

8NM NE Gary IN

Marine Zone Forecast

Late This Afternoon
Southwest winds 20 to 25 kt. Partly cloudy. Waves 1 to 3 ft.
Tonight
South winds 15 to 20 kt diminishing to 10 to 15 kt. Slight chance of showers in the evening, then slight chance of showers and thunderstorms after midnight. Waves 1 to 2 ft.
Thursday
Southwest winds 10 to 15 kt shifting north and rapidly increasing to 35 kt gales late in the afternoon. Patchy fog. Showers and thunderstorms likely in the afternoon. Some thunderstorms may be severe. Waves 1 to 2 ft building to 2 to 4 ft.
Thursday Night
North gales to 35 kt. Patchy fog in the evening. Rain showers and thunderstorms in the evening, then slight chance of showers overnight. Some thunderstorms may be severe. Waves 7 to 10 ft occasionally to 13 ft building to 8 to 11 ft occasionally to 14 ft.
Friday
North winds to 30 kt diminishing to 15 to 20 kt. Mostly cloudy in the morning, then becoming partly cloudy. Waves 7 to 10 ft occasionally to 13 ft subsiding to 5 to 8 ft occasionally to 10 ft.



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241 PM CDT Wed Mar 25 2026
 
 

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