| NWS Forecast for: Northerly Island to Calumet Harbor IL (LMZ742) Issued by: National Weather Service Chicago, IL Last Update: 954 PM CDT Thu Mar 20 2025 | |
Rest Of Tonight: Southeast winds 5 to 10 kt becoming southwest 10 to 20 kt late. Mostly clear. Waves 3 to 5 ft subsiding to 1 to 3 ft. Friday: Southwest winds to 30 kt. Increasing cloudiness. waves 3 to 5 ft. Friday Night: Southwest winds 15 to 25 kt becoming northwest overnight. Chance of showers. Waves 3 to 5 ft. Saturday: North winds 10 to 20 kt becoming northeast 10 to 15 kt in the afternoon. Partly 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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