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Trois-Rivières to Donnacona

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EDT 18 April 2026

Today Tonight and Sunday.

Wind northeast 10 to 15 knots veering to southeast 10 to 15 late this morning then increasing to southeasterly 15 to 25 early this afternoon. Wind becoming west 15 to 25 Sunday morning then diminishing to west 10 to 15 near noon Sunday. Wind becoming light Sunday evening.

Rain overnight and Sunday.

Temperatures plus 5 rising to plus 17 this afternoon then falling to minus 2 Sunday evening.

Extended Forecast

Issued 06:00 AM EDT 18 April 2026
Monday Wind west 15 knots diminishing to light late in the day.
Tuesday Wind light becoming southwest 10 to 15 knots late in the day.
Wednesday 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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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 18 April 2026 Today Tonight and Sunday At 3:00 a.m. EDT today high 1027 mb located over eastern Quebec.
By 8:00 p.m. EDT tonight departing high 1034 mb located off
Newfoundland.

At 3:00 a.m. EDT today deepening trough located on a line
north-south over the Great Lakes.
By 8:00 p.m. EDT tonight trough located on a line north-south over
the Gaspe Peninsula.

At 8:00 p.m. EDT Sunday approaching high 1026 mb located over
northwestern Ontario.

St. Lawrence - St. Lawrence River Area

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Marine Weather for Canada

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