| NWS Forecast for: Calumet Harbor IL to Gary IN (LMZ743) Issued by: National Weather Service Chicago, IL Last Update: 334 AM CDT Tue Mar 31 2026 | |
Today: Southwest winds 20 to 25 kt becoming north by early evening. Showers and a chance of thunderstorms. Waves 2 to 4 ft. Tonight: North winds 20 to 25 kt. Rain showers and a chance of thunderstorms in the evening, then showers likely overnight. Waves 3 to 5 ft building to 4 to 7 ft occasionally to 9 ft. Wednesday: Northeast winds 20 to 25 kt diminishing to 15 to 20 kt. Rain showers likely. Waves 4 to 7 ft occasionally to 9 ft. Wednesday Night: East winds 15 to 20 kt in the evening. Rain showers and slight chance of thunderstorms. Waves 3 to 5 ft. | |
| Zone Forecast: Calumet Harbor IL to Gary IN (LMZ743) | |
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