| 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: 254 AM CDT Tue Sep 23 2025 |  |
Today: Northwest winds 10 to 15 kt becoming north 10 to 20 kt. Patchy dense fog this morning. Slight chance of showers and thunderstorms. Waves 1 to 3 ft. Tonight: North winds 10 to 20 kt becoming northeast 10 to 15 kt. Slight chance of showers and thunderstorms in the evening, then chance of showers overnight. Waves 2 to 4 ft. Wednesday: Northeast winds 10 to 20 kt becoming north. Waves 2 to 4 ft. Wednesday Night: North winds 10 to 20 kt. Chance of showers. Waves 3 to 5 ft. Thursday: North winds 10 to 20 kt. Waves 2 to 4 ft. Thursday Night: Northwest winds 10 to 15 kt becoming west. Waves 1 to 3 ft. Friday: West winds 10 to 15 kt becoming southwest. Waves 1 to 2 ft. Saturday: Southwest winds 10 to 15 kt becoming west 10 to 20 kt. Waves 1 to 3 ft. | |
| Zone Forecast: Lake Michigan from St Joseph to South Haven MI 5NM offshore to Mid Lake (LMZ878) | |
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