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Lake St. Clair

Warnings

Forecast

Marine Forecast

Issued 10:30 AM EST 21 January 2026

Today Tonight and Thursday.

Wind south 15 knots veering to southwest 20 near noon then to west 15 early this evening. Wind increasing to west 20 Thursday morning then diminishing to west 15 Thursday afternoon. Wind backing to southwest 15 Thursday evening.

Snow changing to scattered flurries this afternoon. Visibility 1 mile or less in snow.

Waves

Issued 10:30 AM EST 21 January 2026
Today Tonight and Thursday. Mainly ice covered.

Extended Forecast

Issued 03:00 AM EST 21 January 2026
Friday Wind west 20 knots.
Saturday Wind northwest 15 knots diminishing to light.
Sunday Wind northeast 15 knots diminishing to light late in the day.

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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

*Ice Forecast and Warnings also apply to U.S. waters

Ice Forecasts

Issued 12:00 PM EDT 16 May 2025 Forecasts have ended for the season.
Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 10:30 AM EST 21 January 2026 Today Tonight and Thursday At 10:30 a.m. EST today departing ridge located on a line
northeast-southwest over the Eastern Seaboard.

At 10:30 a.m. EST today trough located on a line north-south over
the Ontario - Manitoba border.
By 10:30 a.m. EST Thursday low 1003 mb located over western Quebec.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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