| NWS Forecast for: Northerly Island to Calumet Harbor IL (LMZ742) Issued by: National Weather Service Chicago, IL Last Update: 314 PM CDT Thu Apr 24 2025 |  |
Tonight: North winds around 15 kt diminishing to 5 to 10 kt. Mostly cloudy. Waves 2 to 4 ft. Friday: North winds 10 to 15 kt increasing to 15 to 25 kt. Chance of showers. Waves 2 to 4 ft building to 3 to 5 ft. Friday Night: North winds 20 to 25 kt. Chance of showers in the evening. Waves 4 to 7 ft occasionally to 9 ft. Saturday: North winds 20 to 25 kt diminishing to 15 to 20 kt. Mostly cloudy in the morning then clearing. Waves 4 to 7 ft occasionally to 9 ft. | |
| Zone Forecast: Northerly Island to Calumet Harbor IL (LMZ742) | |
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