Coastal Waters Forecast for Lake Superior from Saxon Harbor WI to Upper Entrance to Portage Canal MI 5NM off shore to the US/Canadian border including Isle Royale National Park (LSZ263) (Text-Only)
NWS Forecast for: Lake Superior from Saxon Harbor WI to Upper Entrance to Portage Canal MI 5NM off shore to the US/Canadian border including Isle Royale National Park (LSZ263)
Issued by: National Weather Service Marquette, MI
Last Update: 403 AM EDT Mon Jun 2 2025




Early This Morning: Southwest winds 5 to 15 knots. Waves calm to 2 feet.

Today: Southwest winds 5 to 15 knots increasing to 10 to 20 knots in the afternoon, then backing south late. Patchy smoke. Waves calm to 2 feet.

Tonight: South winds 10 to 20 knots veering southwest after midnight. Patchy fog and smoke. A chance of showers through midnight. A chance of thunderstorms. Showers likely after midnight. Waves building to 2 to 4 feet, then subsiding to 1 to 3 feet.

Tuesday: Northwest winds 5 to 15 knots backing southwest late. Patchy fog and smoke. A slight chance of thunderstorms through early afternoon. Showers. Waves subsiding to calm to 2 feet.

Tuesday Night: Southwest winds 5 to 15 knots veering west after midnight. A slight chance of showers through midnight. Waves calm to 2 feet.

Wednesday: Southwest winds 5 to 15 knots increasing to 10 to 20 knots by mid afternoon. Waves building to 1 to 3 feet.

Wednesday Night: Southwest winds 5 to 15 knots. Waves subsiding to calm to 2 feet.

Thursday: Southwest winds 5 to 15 knots. Waves calm to 2 feet.

Friday: Northeast winds 5 to 15 knots veering southwest. Waves calm to 2 feet.







Zone Forecast: Lake Superior from Saxon Harbor WI to Upper Entrance to Portage Canal MI 5NM off shore to the US/Canadian border including Isle Royale National Park (LSZ263)

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