| NWS Forecast for: Calumet Harbor IL to Gary IN (LMZ743) Issued by: National Weather Service Chicago, IL Last Update: 409 AM CDT Thu Apr 23 2026 |  |
Today: South winds 5 to 10 kt increasing to 15 to 25 kt. Mostly sunny in the morning, then becoming partly cloudy. Waves 1 to 2 ft. Tonight: South winds 15 to 25 kt. Showers likely and a chance of thunderstorms overnight. Waves 1 to 3 ft. Friday: South winds 10 to 20 kt becoming southwest in the afternoon. Showers likely and slight chance of thunderstorms in the morning, then showers and a chance of thunderstorms in the afternoon. Waves 1 to 2 ft. Friday Night: Northwest winds 10 to 15 kt becoming north overnight. Slight chance of showers in the evening. Waves 1 to 3 ft. | |
| Zone Forecast: Calumet Harbor IL to Gary IN (LMZ743) | |
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