| NWS Forecast for: Lake Michigan from St Joseph to South Haven MI 5NM offshore to Mid Lake (LMZ878) Issued by: National Weather Service Grand Rapids, MI Last Update: 253 PM CDT Mon Sep 1 2025 |  |
| Tonight: North winds 10 to 15 kt becoming east. Waves 1 to 2 ft. Tuesday: East winds 5 to 10 kt veering to west. Waves 1 to 2 ft. Tuesday Night: South winds 10 to 15 kt becoming southwest 10 to 20 kt. Waves 2 to 4 ft. Wednesday: Southwest winds 15 to 25 kt. Chance of showers and thunderstorms in the morning, then showers likely with a chance of thunderstorms in the afternoon. Waves 4 to 6 ft occasionally to 8 ft. Wednesday Night: Northwest winds 15 to 25 kt increasing to 30 kt. Showers likely with a chance of thunderstorms in the evening, then chance of showers overnight. Waves 4 to 6 ft occasionally to 8 ft building to 5 to 8 ft occasionally to 10 ft. Thursday: Northwest winds to 30 kt becoming west 15 to 25 kt. Waves 5 to 8 ft occasionally to 10 ft subsiding to 4 to 7 ft occasionally to 9 ft. Thursday Night: West winds 15 to 25 kt becoming southwest. Waves 4 to 6 ft occasionally to 8 ft. Friday: Southwest winds to 30 kt becoming west. Chance of showers. Waves 6 to 9 ft occasionally to 12 ft. Saturday: Northwest winds 15 to 25 kt becoming west. Waves 4 to 6 ft occasionally to 8 ft. | |
| Zone Forecast: Lake Michigan from St Joseph to South Haven MI 5NM offshore to Mid Lake (LMZ878) | |
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