| NWS Forecast for: Northerly Island to Calumet Harbor IL (LMZ742) Issued by: National Weather Service Chicago, IL Last Update: 224 PM CST Thu Jan 22 2026 | |
Tonight: West gales to 35 kt becoming northwest, then diminishing to 30 kt late. Intermittent flurries. Waves 3 to 5 ft building to 4 to 6 ft occasionally to 8 ft. Friday: Northwest winds to 30 kt diminishing to 15 to 25 kt. Partly cloudy. Waves 4 to 6 ft occasionally to 8 ft subsiding to 3 to 5 ft. Friday Night: Northwest winds 10 to 20 kt. Slight chance of snow showers overnight. Waves 2 to 4 ft. Saturday: Northwest winds around 10 kt becoming east in the afternoon. Chance of snow. Waves 1 to 3 ft. wave heights are for ice free areas. | |
| Zone Forecast: Northerly Island to Calumet Harbor IL (LMZ742) | |
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