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Cornwall to Montréal

Warnings

Forecast

Marine Forecast

Issued 03:00 PM EDT 14 March 2026

Tonight and Sunday.

Wind north 15 knots increasing to westerly 20 to 30 late this afternoon then diminishing to west 15 this evening. Wind diminishing to light late overnight then becoming northeast 10 to 15 Sunday afternoon.

Periods of snow Sunday evening.

Low tonight minus 8. High Sunday minus 1.

Extended Forecast

Issued 06:00 PM EDT 14 March 2026
Monday Wind southeast 15 to 25 knots.
Tuesday Wind southwest 25 to 35 knots diminishing to west 15 to 25 late in the day.
Wednesday Wind west 15 to 25 knots diminishing to westerly 10 to 15.

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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 14 March 2026 Tonight and Sunday At 3:00 p.m. EDT today low 1002 mb located near Maine.
By 3:00 a.m. EDT Sunday departing low 998 mb located near
Newfoundland.

At 3:00 p.m. EDT today ridge located on a line north-south over
the Great Lakes.
By 8:00 p.m. EDT Sunday ridge located on a line northwest-southeast
over Pointe-des-Monts.

St. Lawrence - St. Lawrence River Area

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Marine Weather for Canada

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