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Lake St. Clair

Warnings

Forecast

Marine Forecast

Issued 06:30 PM EST 06 March 2026

Tonight and Saturday.

Wind south 15 knots veering to southwest 15 late overnight then increasing to southwest 20 Saturday morning. Wind veering to west 20 Saturday evening.

Scattered showers and fog patches with a risk of thunderstorms.

Waves

Issued 06:30 PM EST 06 March 2026
Tonight and Saturday. Mainly ice covered.

Extended Forecast

Issued 06:30 PM EST 06 March 2026
Sunday Wind west 15 knots.
Monday Wind southwest 20 knots.
Tuesday Wind light becoming southwest 15 knots.

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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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land station Land Station
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 6:30 PM EST 6 March 2026 Tonight and Saturday At 6:30 p.m. EST tonight departing ridge located on a line
north-south over Labrador.

At 6:30 p.m. EST tonight trough located from Iowa to Lake Superior.
By 6:30 p.m. EST Saturday trough located on a line
northeast-southwest over eastern Ontario.

By 6:30 p.m. EST Saturday ridge located on a line north-south over
northern Ontario.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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