| NWS Forecast for: Winthrop Harbor to Wilmette Harbor IL (LMZ740) Issued by: National Weather Service Chicago, IL Last Update: 253 PM CST Thu Jan 15 2026 | |
Tonight: Southwest winds 15 to 25 kt becoming south. Snow. Waves 2 to 4 ft. Friday: Southwest winds 20 to 25 kt becoming west in the afternoon. Snow likely in the morning, then chance of snow in the afternoon. Waves 2 to 4 ft. Friday Night: West winds 15 to 20 kt. Chance of snow showers. Waves 2 to 4 ft. Saturday: West winds 20 to 25 kt. Slight chance of snow showers in the morning, then chance of snow showers in the afternoon. Waves 2 to 4 ft. | |
| Zone Forecast: Winthrop Harbor to Wilmette Harbor IL (LMZ740) | |
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