Coastal Waters Forecast for Lake Superior from Upper Entrance to Portage Canal to Manitou Island MI 5NM off shore to the US/Canadian Border (LSZ264) (Text-Only)
NWS Forecast for: Lake Superior from Upper Entrance to Portage Canal to Manitou Island MI 5NM off shore to the US/Canadian Border (LSZ264)
Issued by: National Weather Service Marquette, MI
Last Update: 1002 PM EDT Wed Jun 18 2025


Rest Of Tonight: Southeast winds less than 10 knots backing north after midnight, then increasing to 5 to 15 knots late. Areas of fog. Waves calm to 2 feet.

Thursday: Northeast winds 5 to 15 knots. Patchy fog through early afternoon. A slight chance of showers. Waves building to 1 to 3 feet, then subsiding to calm to 2 feet.

Thursday Night: West winds less than 10 knots backing east late. A chance of showers. Waves calm to 2 feet.

Friday: East winds 5 to 15 knots. A chance of showers. A slight chance of thunderstorms by mid afternoon. Waves calm to 2 feet.

Friday Night: Southeast winds 5 to 15 knots. A chance of showers through midnight. A chance of thunderstorms. Showers after midnight. Waves calm to 2 feet.

Saturday: East winds 5 to 15 knots. Showers likely through early afternoon. Waves building to 1 to 3 feet, then subsiding to calm to 2 feet.

Saturday Night: East winds 5 to 15 knots veering southeast after midnight. A chance of showers. Waves calm to 2 feet.

Sunday: Southeast winds 5 to 15 knots becoming southwest 10 to 20 knots. A chance of showers. Waves building to 1 to 3 feet.

Monday: West winds 10 to 20 knots diminishing to 5 to 15 knots. A chance of showers. Waves subsiding to calm to 2 feet.







Zone Forecast: Lake Superior from Upper Entrance to Portage Canal to Manitou Island MI 5NM off shore to the US/Canadian Border (LSZ264)

Visit your local NWS office at: https://www.weather.gov/mqt/