| NWS Forecast for: Winthrop Harbor to Wilmette Harbor IL (LMZ740) Issued by: National Weather Service Chicago, IL Last Update: 943 AM CDT Fri Apr 24 2026 |  |
Rest Of Today: Southwest winds 15 to 20 kt becoming west 10 to 15 kt early in the afternoon, then becoming northwest late. slight chance of showers late in the morning, then chance of showers in the afternoon. Waves 1 to 3 ft. Tonight: Northwest winds 10 to 15 kt becoming north. Mostly cloudy. Waves 1 to 3 ft. Saturday: North winds 10 to 15 kt increasing to 15 to 20 kt. Decreasing cloud cover. Waves 2 to 4 ft. Saturday Night: North winds 10 to 20 kt becoming northeast and diminishing to around 10 kt overnight. Increasing cloudiness. waves 2 to 4 ft. | |
| Zone Forecast: Winthrop Harbor to Wilmette Harbor IL (LMZ740) | |
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