Language selection

Weather shortcuts

Cornwall to Montréal

Forecast

Marine Forecast

Issued 03:00 AM EDT 21 April 2024

Today Tonight and Monday.

Wind southwest 10 to 15 knots increasing to southwest 20 early this morning then veering to northwest 20 near midnight. Wind diminishing to northwest 15 Monday morning then backing to southwest 15 near noon Monday.

Showers this evening.

High today plus 8. Low tonight minus 2. High Monday plus 7.

Extended Forecast

Issued 06:00 AM EDT 21 April 2024
Tuesday Wind light increasing to south 10 to 20 knots in the afternoon.
Wednesday Wind southwest 15 knots veering to northwest 20.
Thursday Wind west 10 to 15 knots.

Stay connected

ATOM

Weather Conditions

Skip Image

Zoom-in to make a selection

Map of Great Lakes - Lake Erie and Lake Ontario marine weather areas N Huron - 45003 W Erie - 45005 S Huron - 45008 Lake Ontario - 45012 Port Stanley - 45132 Prince Edward Point - 45135 Georgian Bay - 45137 Grimsby - 45139 Port Colborne - 45142 South Georgian Bay - 45143 Lake St Clair - 45147 South Lake Huron - 45149 Lake Simcoe - 45151 Lake Nipissing - 45152 North Channel - 45154 Ajax - 45159 Sault Ste. Marie Airport Killarney Greater Sudbury Airport North Bay Airport Gore Bay-Manitoulin Airport Great Duck Island Brockville Grenadier Island Kingston Airport Collingwood Lagoon City Muskoka Airport Parry Sound Harbour Lake Simcoe Regional Airport Wiarton Airport Western Islands Cove Island Goderich Sarnia Chris Hadfield Airport Tobermory Harrow AAFC Long Point Port Weller St. Catharines / Niagara District Airport Southeast Shoal Vineland Station Welland-Pelham Windsor Airport Port Colborne Erieau Point Pelee Burlington Lift Bridge Cobourg Hamilton Munro Int'l Airport Oshawa Executive Airport Point Petre Toronto City Centre Airport CFB Trenton Peterborough Municipal Airport
Legend:
buoy Buoy
land station Land Station
Ice Conditions

There is no ice forecast issued for this area.

Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 3:00 AM EDT 21 April 2024 Today Tonight and Monday At 3:00 a.m. EDT today dissipating ridge located on a line
northeast-southwest over Lake Saint-Jean.

At 3:00 a.m. EDT today trough located on a line northeast-southwest
over northern Ontario.
By 8:00 p.m. EDT Monday trough located on a line north-south
over Natashquan.

At 8:00 p.m. EDT tonight ridge located on a line northeast-southwest
over northern Ontario.
By 8:00 p.m. EDT Monday ridge located on a line north-south over
Lake Saint-Jean.

Great Lakes - Lake Erie and Lake Ontario Area

Another Region

Date modified: