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Government of Canada / Gouvernement du Canada

Cornwall to Montréal

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EDT 19 March 2026

Today Tonight and Friday.

Wind southeast 10 to 15 knots veering to southwesterly 10 to 15 near noon then becoming light overnight. Wind becoming northeast 15 Friday morning.

Flurries or showers this afternoon and this evening. Snow Friday. Visibility 1 mile or less in precipitation.

Temperatures minus 6 rising to plus 3 Friday afternoon.

Extended Forecast

Issued 06:00 AM EDT 19 March 2026
Saturday Wind light.
Sunday Wind light increasing to northeast 15 to 25 knots.
Monday Wind northeast 15 to 20 knots diminishing to northeast 10 to 15 late in the day.

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Map of Great Lakes - Lake Huron marine weather areas
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Ice Conditions

There is no ice forecast issued for this area.

Warnings

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Synopsis

Technical Marine Synopsis

Issued 3:00 AM EDT 19 March 2026 Today Tonight and Friday At 3:00 a.m. EDT today ridge located on a line northwest-southeast
over Anticosti Island.
By 8:00 p.m. EDT tonight departing ridge located on a line
northwest-southeast over the Strait of Belle Isle.

At 3:00 a.m. EDT today trough located from James Bay to Lake
Superior.
By 8:00 p.m. EDT Friday trough located from Labrador to Sept-Îles.

At 8:00 p.m. EDT tonight low 1005 mb located over Manitoba.
By 8:00 p.m. EDT Friday low 1006 mb located south of Quebec.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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