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Cornwall to Montréal

Warnings

Forecast

Marine Forecast

Issued 03:00 PM EST 09 November 2025

Tonight and Monday.

Wind northeast 15 to 25 knots becoming northwesterly 15 this evening then backing to southwest 15 to 20 early Monday morning.

Snow or rain with a risk of freezing rain late this afternoon and this evening changing to flurries Monday morning. Visibility 1 mile or less in precipitation.

Temperatures near plus 1.

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 Erie and Lake Ontario marine weather areas Harrow AAFC Burlington Lift Bridge Oshawa Executive Airport Point Pelee Peterborough Municipal Airport Point Petre Hamilton Munro Int'l Airport Erieau Cobourg Toronto City Centre Airport Port Colborne CFB Trenton South Lake Huron - 45149 Windsor Airport Great Duck Island Gore Bay-Manitoulin Airport North Bay Airport Greater Sudbury Airport Killarney Sault Ste. Marie Airport Ajax - 45159 North Channel - 45154 Lake Nipissing - 45152 Lake Simcoe - 45151 Welland-Pelham Lake St Clair - 45147 South Georgian Bay - 45143 Port Colborne - 45142 Grimsby - 45139 Georgian Bay - 45137 Prince Edward Point - 45135 Port Stanley - 45132 Vineland Station Brockville Grenadier Island Kingston Airport Collingwood Lagoon City Muskoka Airport Parry Sound Harbour Lake Simcoe Regional Airport Wiarton Airport Cove Island Goderich Sarnia Chris Hadfield Airport Western Islands Tobermory Long Point Port Weller St. Catharines / Niagara District Airport Southeast Shoal
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buoy Buoy
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 EST 9 November 2025 Tonight and Monday At 3:00 p.m. EST today ridge located from Lake Superior to Labrador.
By 1:00 p.m. EST Monday ridge located from Labrador to Newfoundland.

At 3:00 p.m. EST today intensifying low 1006 mb located over
southern Lake Ontario.
By 7:00 p.m. EST Monday low 996 mb located south of Maine.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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