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Lake St. Clair

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EDT 16 March 2026

Today Tonight and Tuesday.

Wind south 30 knots veering to southwest 30 early this morning then diminishing to west 20 early this evening. Wind veering to northwest 15 Tuesday morning then backing to west 15 Tuesday afternoon.

Rain ending late this morning with a risk of thunderstorms. Scattered flurries this afternoon tonight and Tuesday. Visibility as low as 1 mile in flurries.

Waves

Issued 03:00 AM EDT 16 March 2026
Today Tonight and Tuesday. Waves 0.5 to 1 metre subsiding to 0.5 or less near noon Tuesday.

Extended Forecast

Issued 03:00 AM EDT 16 March 2026
Wednesday Wind light becoming southwest 15 knots in the morning.
Thursday Wind southwest 15 knots diminishing to light late in the day.
Friday Wind light becoming south 15 knots late in the day.

Ice Forecast*

Issued 12:00 PM EDT 15 March 2026 Today Tonight and Monday 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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Ice Conditions

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

Ice Forecasts

Issued 12:00 PM EDT 15 March 2026 Today Tonight and Monday

Ice Coverage

Open water.

Warnings

Watches (In effect)

Squall watch in effect

Lake St. Clair

Issued 04:35 AM EDT 16 March 2026 Conditions are favourable for the development of squalls with wind gusts up to 40 knots, frequent lightning and poor to very poor visibility in thunderstorms heavy at times.

Squalls associated with gusty southerly winds or thunderstorms approaching from the southwest will move over region this morning.

Consider delaying or postponing travel in areas under the Squall Watch.

Please continue to monitor alerts and forecasts issued by Environment Canada. For more information monitor Canadian Coast Guard radio or Weatheradio stations.

Synopsis

Technical Marine Synopsis

Issued 3:00 AM EDT 16 March 2026 Today Tonight and Tuesday At 3:00 a.m. EDT today low 988 mb located over southern Michigan.
By 3:00 a.m. EDT Tuesday low 979 mb located over eastern Quebec.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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