| NWS Forecast for: Calumet Harbor IL to Gary IN (LMZ743) Issued by: National Weather Service Chicago, IL Last Update: 909 PM CDT Wed Mar 25 2026 |  |
Rest Of Tonight: Southwest winds 10 to 15 kt becoming south. mostly cloudy. 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. Waves around 1 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. | |
| Zone Forecast: Calumet Harbor IL to Gary IN (LMZ743) | |
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