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Lake St. Clair

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EST 05 March 2026

Today Tonight and Friday.

Wind east 10 knots increasing to east 15 this morning then diminishing to northeast 10 early this evening. Wind becoming light near midnight then becoming southeast 10 Friday morning. Wind increasing to south 15 Friday evening.

Periods of rain changing to periods of drizzle this evening and ending near midnight. Scattered showers Friday evening. Risk of thunderstorms late this afternoon and this evening. Risk of thunderstorms Friday late in the day. Fog patches.

Waves

Issued 03:00 AM EST 05 March 2026
Today Tonight and Friday. Mainly ice covered.

Extended Forecast

Issued 03:00 AM EST 05 March 2026
Saturday Wind southwest 15 knots increasing to southwest 20 in the morning.
Sunday Wind west 15 knots backing to southwest 20.
Monday Wind southwest 15 knots.

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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 16 May 2025 Forecasts have ended for the season.
Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 3:00 AM EST 5 March 2026 Today Tonight and Friday At 3:00 a.m. EST today ridge located on a line northwest-southeast
over northern Ontario.
By 3:00 a.m. EST Friday departing ridge located on a line east-west
over central Quebec.

At 3:00 a.m. EST today low 1014 mb located over Missouri.
By 3:00 a.m. EST Friday low 1015 mb located over Pennsylvania.

At 3:00 a.m. EST Friday approaching trough located from Nebraska
to Lake of the Woods.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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