| NWS Forecast for: Northerly Island to Calumet Harbor IL (LMZ742) Issued by: National Weather Service Chicago, IL Last Update: 907 AM CST Thu Nov 13 2025 | |
| Rest Of Today: West winds 10 to 15 kt becoming southwest early in the afternoon. Mostly sunny in the morning, then becoming partly cloudy in the afternoon. Waves 1 to 2 ft. Tonight: Southwest winds around 10 kt becoming south. Mostly cloudy in the evening then clearing. Waves 1 to 2 ft. Friday: South winds around 10 kt. Sunny. Waves 1 to 2 ft. Friday Night: South winds 10 to 15 kt. Partly cloudy in the evening, then becoming mostly cloudy. Waves 1 to 3 ft building to 2 to 4 ft. | |
| Zone Forecast: Northerly Island to Calumet Harbor IL (LMZ742) | |
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