Coastal Waters Forecast for Grand Portage to Grand Marais MN (LSZ140) (Text-Only)
NWS Forecast for: Grand Portage to Grand Marais MN (LSZ140)
Issued by: National Weather Service Duluth, MN
Last Update: 517 PM CDT Sat Jun 20 2026




Tonight: West wind 5 knots becoming north after midnight. Scattered showers and thunderstorms early in the evening, then isolated showers and thunderstorms late in the evening. Waves 1 foot or less.

Sunday: North wind 5 knots becoming southeast late in the morning, then becoming south in the afternoon. Mostly sunny. Waves 1 foot or less.

Sunday Night: Northwest wind 5 knots becoming north in the late evening and overnight. Partly cloudy in the evening then becoming mostly cloudy. Waves 1 foot or less.

Monday: North wind 5 knots becoming east late in the morning, then becoming southwest in the afternoon. Mostly sunny. Waves 1 foot or less.







Zone Forecast: Grand Portage to Grand Marais MN (LSZ140)

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