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Cornwall to Montréal

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EST 10 November 2025

Today Tonight and Tuesday.

Wind northwesterly 15 knots backing to southwest 15 to 20 early this morning then diminishing to light Tuesday evening.

Snow or rain changing to flurries early this morning. Visibility 1 mile or less in precipitation.

Temperatures near zero.

Extended Forecast

Issued 06:00 PM EST 09 November 2025
Tuesday Wind west 15 to 25 knots.
Wednesday Wind southwest 15 knots.
Thursday Wind southwest 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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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 10 November 2025 Today Tonight and Tuesday At 3:00 a.m. EST today ridge located from Labrador to Newfoundland.
By 1:00 a.m. EST Tuesday ridge located off Newfoundland.

At 3:00 a.m. EST today intensifying low 1004 mb located over Maine.
By 7:00 p.m. EST Tuesday low 984 mb located south of Labrador.

At 3:00 a.m. EST today ridge located on a line north-south over
the Midwestern states.
By 7:00 p.m. EST Tuesday ridge located on a line north-south
over Cornwall.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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