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Government of Canada / Gouvernement du Canada

Montréal to Trois-Rivières

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EDT 19 March 2026

Today Tonight and Friday.

Wind southeast 10 to 15 knots increasing to south 15 to 25 this morning then diminishing to southwest 10 to 15 early this evening. Wind becoming light overnight then becoming northeast 15 near noon Friday.

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

High today plus 1. Low tonight minus 4. High Friday plus 1.

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 St. Lawrence - St. Lawrence River marine weather areas
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land station Land Station
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.

St. Lawrence - St. Lawrence River Area

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Marine Weather for Canada

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