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Lake St. Clair

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EDT 15 March 2026

Today Tonight and Monday.

Wind east 20 knots veering to south 20 this afternoon then to southwest 25 Monday morning. Wind veering to west 25 Monday evening.

Scattered flurries ending this morning. Showers overnight and Monday morning. Scattered flurries Monday evening. Risk of freezing rain today. Risk of thunderstorms overnight and Monday morning. Visibility 1 mile or less in flurries.

Waves

Issued 03:00 AM EDT 15 March 2026
Today Tonight and Monday. Over open water waves 0.5 metres or less building to 0.5 to 1 early this morning and to 1 to 1.5 near midnight.

Extended Forecast

Issued 03:00 AM EDT 15 March 2026
Tuesday Wind northwest 25 knots diminishing to west 15 in the afternoon.
Wednesday Wind light becoming southwest 15 knots.
Thursday Wind southwest 15 knots diminishing to light.

Ice Forecast*

Issued 12:00 PM EDT 14 March 2026 Today Tonight and Sunday Open water.

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

 

[ Canadian Ice Service ]

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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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land station Land Station
Ice Conditions

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

Ice Forecasts

Issued 12:00 PM EDT 14 March 2026 Today Tonight and Sunday

Ice Coverage

Open water.

Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 3:00 AM EDT 15 March 2026 Today Tonight and Monday At 3:00 a.m. EDT today ridge located on a line north-south over
eastern Ontario.
By 3:00 a.m. EDT Monday ridge located on a line northwest-southeast
over eastern Quebec.

At 3:00 a.m. EDT today low 992 mb located over Nebraska.
By 3:00 a.m. EDT Monday low 988 mb located over southern Lake
Michigan.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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