| NWS Forecast for: Winthrop Harbor to Wilmette Harbor IL (LMZ740) Issued by: National Weather Service Chicago, IL Last Update: 937 PM CDT Wed May 21 2025 |  |
Rest Of Tonight: North winds 10 to 20 kt becoming northwest. drizzly with occasional showers. Waves 3 to 5 ft. Thursday: Northwest winds 10 to 20 kt becoming north in the afternoon. Chance of showers in the morning. Waves 3 to 5 ft. Thursday Night: North winds 10 to 20 kt becoming northwest 10 to 15 kt. Partly cloudy in the evening then clearing. Waves 3 to 5 ft subsiding to 2 to 4 ft. Friday: Northwest winds 10 to 15 kt becoming northeast 5 to 10 kt in the afternoon. Mostly sunny in the morning, then becoming partly cloudy. Waves 1 to 3 ft. | |
| Zone Forecast: Winthrop Harbor to Wilmette Harbor IL (LMZ740) | |
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