| NWS Forecast for: Winthrop Harbor to Wilmette Harbor IL (LMZ740) Issued by: National Weather Service Chicago, IL Last Update: 935 PM CST Mon Dec 1 2025 | |
| Rest Of Tonight: South winds 10 to 20 kt becoming west 10 to 15 kt late. Snow late in the evening, then chance of snow after midnight. Waves 1 to 3 ft. Tuesday: Northwest winds 10 to 15 kt becoming west in the early afternoon and then southwest late. Mostly cloudy. Waves 1 to 2 ft. Tuesday Night: Southwest winds 15 to 20 kt increasing to 20 to 25 kt. Cloudy. Waves building to 2 to 4 ft. A small craft advisory will likely be needed. Wednesday: Southwest winds 20 to 25 kt becoming west 15 to 25 kt in the afternoon. Chance of snow showers in the morning, then snow showers likely in the afternoon. Waves 2 to 4 ft. | |
| Zone Forecast: Winthrop Harbor to Wilmette Harbor IL (LMZ740) | |
Visit your local NWS office at: https://www.weather.gov/lot |