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Kingston to Cornwall

Warnings

Forecast

Marine Forecast

Issued 10:30 AM EDT 17 July 2026

Today Tonight and Saturday.

Wind light becoming south 10 knots late overnight then increasing to southwest 15 Saturday morning. Wind diminishing to northwest 10 Saturday evening.

Scattered showers Saturday afternoon and evening with a risk of thunderstorms. Smoke forming near noon Saturday and dissipating Saturday evening. Visibility as low as 1 mile in smoke.

Extended Forecast

Issued 03:00 AM EDT 17 July 2026
Sunday Wind light.
Monday Wind light.
Tuesday Wind light becoming southwest 15 knots.

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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 - Quai de St-Jean 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 10:30 AM EDT 17 July 2026 Today Tonight and Saturday At 10:30 a.m. EDT today ridge located on a line north-south over
southern Ontario.
By 10:30 a.m. EDT Saturday ridge located on a line
northeast-southwest over the Eastern Seaboard.

At 10:30 a.m. EDT today low 1010 mb located over northwestern
Ontario.
By 10:30 a.m. EDT Saturday low 999 mb located north of Lake
Nipissing.

St. Lawrence - St. Lawrence River Area

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Marine Weather for Canada

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