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Cornwall to Montréal

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EST 15 November 2025

Today Tonight and Sunday.

Wind light increasing to northeast 10 to 15 knots early this evening and to westerly 15 to 20 Sunday morning.

Rain or freezing rain beginning this evening changing to flurries Sunday morning. Visibility 1 mile or less in precipitation.

Temperatures minus 4 rising to plus 2 this afternoon.

Extended Forecast

Issued 06:00 AM EST 15 November 2025
Monday Wind west 15 to 25 knots.
Tuesday Wind southwest 15 to 25 knots.
Wednesday Wind southwest 10 to 15 knots.

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Map of Great Lakes - Lake Huron marine weather areas Cove Island Goderich Oshawa Executive Airport CFB Trenton Western Islands Wiarton Airport Point Petre Lake Simcoe Regional Airport Parry Sound Harbour Toronto City Centre Airport Muskoka Airport Lagoon City Brockville Hamilton Munro Int'l Airport Sarnia Chris Hadfield Airport Tobermory Cobourg Harrow AAFC Long Point Port Weller Burlington Lift Bridge St. Catharines / Niagara District Airport Southeast Shoal Point Pelee Vineland Station Welland-Pelham Erieau Windsor Airport Port Colborne Killarney South Georgian Bay - 45143 Grimsby - 45139 Georgian Bay - 45137 Prince Edward Point - 45135 Port Stanley - 45132 Lake St Clair - 45147 South Lake Huron - 45149 Sault Ste. Marie Airport Lake Simcoe - 45151 Collingwood Greater Sudbury Airport North Bay Airport Kingston Airport Peterborough Municipal Airport Grenadier Island Port Colborne - 45142 Great Duck Island Ajax - 45159 Gore Bay-Manitoulin Airport North Channel - 45154 Lake Nipissing - 45152
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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 AM EST 15 November 2025 Today Tonight and Sunday At 3:00 a.m. EST today low 981 mb located over Newfoundland.
By 7:00 a.m. EST Sunday dissipating low 989 mb located near
Sept-Îles.

At 3:00 a.m. EST today ridge located from Lake Ontario to Ungava
Bay.
By 7:00 a.m. EST Sunday dissipating ridge located from New Brunswick
to Hudson Bay.

At 3:00 a.m. EST today low 996 mb located over Lake Superior.
By 7:00 p.m. EST Sunday low 979 mb located over New Brunswick.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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