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: 1101 PM EDT Mon Jul 20 2026
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Rest Of Tonight: Southwest wind 10 to 15 knots veering west 15 to 20 knots late. Gusts up to 27 knots. Mostly cloudy. A slight chance of showers and thunderstorms by midnight, then a chance of showers late. Some thunderstorms may be severe. Waves 1 to 2 feet building to 3 to 5 feet occasionally to 7 feet.

Tuesday: Northwest wind up to 30 knots with gale force gusts up to 41 knots. Cloudy. A chance of showers through mid morning. Waves building to 8 to 11 feet occasionally to 14 feet.

Tuesday Night: Northwest wind 20 to 25 knots with gale force gusts up to 37 knots. Cloudy with a slight chance of showers in the evening, then partly cloudy after midnight. Waves subsiding to 4 to 7 feet occasionally to 9 feet.

Wednesday: Northwest wind 15 to 20 knots. Gusts up to 27 knots. Sunny. Waves subsiding to 3 to 5 feet occasionally to 7 feet.







Zone Forecast: Munising to Grand Marais MI (LSZ250)

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