Coastal Waters Forecast for Munising to Grand Marais MI (LSZ250) (Text-Only)
NWS Forecast for: Munising to Grand Marais MI (LSZ250)
Issued by: National Weather Service Marquette, MI
Last Update: 1100 PM EDT Mon Aug 24 2026


Rest Of Tonight: Variable wind less than 10 knots becoming southwest less than 10 knots late. Clear. Waves 1 to 2 feet.

Tuesday: South wind less than 10 knots backing southeast 5 to 15 knots by late morning. Mostly sunny. A slight chance of showers late. Waves calm to 1 foot.

Tuesday Night: South wind 10 to 15 knots with gusts up to 23 knots. A chance of showers and thunderstorms in the evening, then showers and a chance of thunderstorms after midnight. Waves building to 1 to 2 feet.

Wednesday: Southwest wind 10 to 15 knots veering west in the afternoon. Showers and a slight chance of thunderstorms. Waves building to 2 to 3 feet.







Zone Forecast: Munising to Grand Marais MI (LSZ250)

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