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Cornwall to Montréal

Warnings

Forecast

Marine Forecast

Issued 03:00 PM EDT 10 June 2026

Tonight and Thursday.

Wind light with gusts to 35 knots near thunderstorms late this afternoon and this evening. Wind light Thursday.

Showers ending Thursday morning with a risk of thunderstorms. Showers Thursday late in the day with a risk of thunderstorms. Visibility as low as 1 mile in showers.

Extended Forecast

Issued 06:00 PM EDT 10 June 2026
Friday Wind light becoming southwest 15 knots in the afternoon.
Saturday Wind southwesterly 15 knots.
Sunday Wind southwesterly 15 knots increasing to southwest 15 to 25.

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Map of Great Lakes - Lake Erie and Lake Ontario marine weather areas CFB Trenton Port Colborne - 45142 Hamilton Munro Int'l Airport Oshawa Executive Airport Port Stanley - 45132 Lake Nipissing - 45152 Point Petre Georgian Bay - 45137 Toronto City Centre Airport Lake Simcoe - 45151 South Georgian Bay - 45143 Prince Edward Point - 45135 Peterborough Municipal Airport South Lake Huron - 45149 Collingwood Lake St Clair - 45147 Grimsby - 45139 Goderich Lagoon City Kingston Airport Muskoka Airport Parry Sound Harbour Grenadier Island Lake Simcoe Regional Airport Wiarton Airport Brockville Western Islands Cove Island Great Duck Island North Channel - 45154 Sarnia Chris Hadfield Airport Gore Bay-Manitoulin Airport Tobermory Harrow AAFC Long Point North Bay Airport Port Weller St. Catharines / Niagara District Airport Greater Sudbury Airport Southeast Shoal Vineland Station Port Colborne Erieau Cobourg Sault Ste. Marie Airport Windsor Airport Welland-Pelham Killarney Ajax - 45159 Point Pelee Burlington Lift Bridge
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Ice Conditions

There is no ice forecast issued for this area.

Warnings

Watches (Ended)

Squall watch ended

Cornwall to Montréal

Issued 11:49 PM EDT 10 June 2026
Synopsis

Technical Marine Synopsis

Issued 3:00 PM EDT 10 June 2026 Tonight and Thursday At 3:00 p.m. EDT today low 1003 mb located northeast of Lake Huron.
By 8:00 a.m. EDT Thursday dissipating low located over western
Quebec.

At 8:00 a.m. EDT Friday flat low located over southern Quebec.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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