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Cornwall to Montréal

Forecast

Marine Forecast

Issued 03:00 PM EDT 09 June 2026

Tonight and Wednesday.

Wind light becoming southeast 10 to 15 knots early Wednesday afternoon then becoming light Wednesday evening.

Showers Wednesday afternoon and evening with a risk of thunderstorms. Visibility as low as 1 mile in showers.

Extended Forecast

Issued 06:00 PM EDT 09 June 2026
Thursday Wind light becoming southwest 10 to 15 knots in the morning.
Friday Wind light becoming southwest 15 knots late in the day.
Saturday Wind west 15 knots.

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Weather Conditions

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Map of Great Lakes - Lake Huron marine weather areas Wiarton Airport Western Islands Cove Island Goderich Lake Simcoe Regional Airport Vineland Station Parry Sound Harbour Sarnia Chris Hadfield Airport Tobermory Muskoka Airport Harrow AAFC Long Point Port Weller St. Catharines / Niagara District Airport Lagoon City Southeast Shoal Burlington Lift Bridge Welland-Pelham Windsor Airport Port Colborne Erieau Peterborough Municipal Airport CFB Trenton Toronto City Centre Airport Point Petre Oshawa Executive Airport Hamilton Munro Int'l Airport Point Pelee Cobourg Port Colborne - 45142 North Channel - 45154 Ajax - 45159 Lake Nipissing - 45152 Sault Ste. Marie Airport Killarney Lake Simcoe - 45151 Greater Sudbury Airport South Lake Huron - 45149 Lake St Clair - 45147 North Bay Airport South Georgian Bay - 45143 Gore Bay-Manitoulin Airport Grimsby - 45139 Georgian Bay - 45137 Great Duck Island Collingwood Kingston Airport Grenadier Island Brockville Prince Edward Point - 45135 Port Stanley - 45132
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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 PM EDT 9 June 2026 Tonight and Wednesday At 3:00 p.m. EDT today ridge located on a line north-south over
Cornwall.
By 8:00 a.m. EDT Wednesday dissipating ridge located on a line
northwest-southeast over Trois-Rivières.

At 3:00 p.m. EDT today low 1012 mb located west of Lake Michigan.
By 8:00 p.m. EDT Wednesday low 1005 mb located northeast of
Lake Huron.

At 8:00 p.m. EDT tonight building low 1007 mb located near
Sept-Îles.
By 8:00 p.m. EDT Wednesday low 1007 mb located over New Brunswick.

Great Lakes - Lake Huron Area

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