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Cornwall to Montréal

Warnings

Forecast

Marine Forecast

Issued 03:00 PM EDT 05 June 2026

Tonight and Saturday.

Wind light becoming southwest 15 knots near noon Saturday with gusts to 30 near thunderstorms.

Showers Saturday. Risk of thunderstorms Saturday afternoon and evening. Visibility as low as 1 mile in showers.

Extended Forecast

Issued 06:00 PM EDT 05 June 2026
Sunday Wind west 10 to 15 knots becoming northeast 15 in the afternoon.
Monday Wind light.
Tuesday Wind light.

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Map of St. Lawrence - St. Lawrence River marine weather areas Miramichi North Cape Port Menier Roberval Airport Normandin Mistook Jonquière CFB Bagotville Cap-Chat Île Bicquette Charlo North Bay Airport Yarmouth Airport Brier Island St. Stephen Saint John Airport Point Lepreau Greater Moncton Roméo LeBlanc Int'l Airport Miscou Island Kouchibouguac Kouchibouguac Grand Manan Fundy Park (Alma) Bas Caraquet Bathurst Airport Lac Saint-Pierre Pointe-Noire Île d'Orléans Pointe-des-Monts L'Assomption Sept-Îles Airport Pointe Claveau Pointe de l'Islet Trois-Rivières Airport L'Isle-aux-Grues Deschambault Île Rouge Montréal-Trudeau Int'l Airport Montréal Metropolitain Airport Lac Memphrémagog Sainte-Anne-de-Bellevue Cap-Rouge Saint-Anicet Baie-Comeau Airport La Pocatière Pointe-au-Père New Carlisle Mont-Joli Airport Gaspé Airport Lake Nipissing - 45152 Rivière-la-Madeleine Beauport Cap-d'Espoir
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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 PM EDT 5 June 2026 Tonight and Saturday At 3:00 p.m. EDT today ridge located from Hudson Bay to Matane.
By 8:00 a.m. EDT Saturday departing ridge located from Labrador
to the Gulf of St. Lawrence.

At 8:00 p.m. EDT tonight cold front located from James Bay to
Lake Superior.
By 8:00 p.m. EDT Saturday cold front located from Lake Saint-Jean
to Lake Ontario.

St. Lawrence - St. Lawrence River Area

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Marine Weather for Canada

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