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Montréal to Trois-Rivières

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EDT 07 August 2026

Today Tonight and Saturday.

Wind light becoming southwest 10 to 15 knots this afternoon then diminishing to light near midnight. Wind light Saturday.

Scattered showers overnight and Saturday. Risk of thunderstorms Saturday afternoon and evening. Fog banks dissipating early this morning. Fog banks overnight. Visibility 1 mile or less in fog banks and as low as 1 mile in showers.

Extended Forecast

Issued 06:00 AM EDT 07 August 2026
Sunday Wind southwest 15 knots.
Monday Wind southwest 10 to 15 knots.
Tuesday Wind light becoming west 10 to 15 knots.

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Map of St. Lawrence - St. Lawrence River marine weather areas Grand Manan New Carlisle Pointe-au-Père Fundy Park (Alma) Port Menier Miramichi Île Bicquette Charlo Cap-Chat Bathurst Airport CFB Bagotville Jonquière Mistook Normandin Roberval Airport Île-d'Orléans - Quai de St-Jean Deschambault North Bay Airport Beauport L'Isle-aux-Grues Bas Caraquet Lake Nipissing - 45152 Pointe-des-Monts L'Assomption Baie-Comeau Airport Saint-Anicet Cap-Rouge Sainte-Anne-de-Bellevue Lac Memphrémagog Montréal Metropolitain Airport Île Rouge Montréal-Trudeau Int'l Airport Lac Saint-Pierre Trois-Rivières Airport Pointe de l'Islet Pointe Claveau Sept-Îles Airport Kouchibouguac North Cape Pointe-Noire Yarmouth Airport Cap-d'Espoir Brier Island Rivière-la-Madeleine St. Stephen Gaspé Airport Saint John Airport Point Lepreau Greater Moncton Roméo LeBlanc Int'l Airport La Pocatière Miscou Island Mont-Joli Airport
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buoy Buoy
land station Land Station
Ice Conditions

There is no ice forecast issued for this area.

Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 3:00 AM EDT 7 August 2026 Today Tonight and Saturday At 3:00 a.m. EDT today trough located on a line north-south over
western Anticosti Island.
By 2:00 p.m. EDT today dissipating trough located on a line
north-south over the Gulf of St. Lawrence.

At 3:00 a.m. EDT today flat low located from Labrador to the
Great Lakes.
By 8:00 p.m. EDT Saturday flat low located over the Gulf of
St. Lawrence.

At 11:00 p.m. EDT tonight trough located on a line
northeast-southwest over Lake Superior.
By 8:00 p.m. EDT Saturday trough located on a line north-south
over Cornwall.

St. Lawrence - St. Lawrence River Area

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Marine Weather for Canada

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