Cornwall to Montréal
Forecast
Marine Forecast
Issued 03:00 PM EDT 15 July 2025
Tonight and Wednesday.
Wind southwest 10 to 15 knots becoming light this evening then becoming southwest 10 to 15 Wednesday morning. Wind becoming light Wednesday evening.
Extended Forecast
Issued 06:00 AM EDT 15 July 2025
Thursday
Wind light increasing to southwest 15 to 20
knots in the afternoon.
Friday
Wind northwest 10 to 15 knots backing to
southwest 10 to 15.
Saturday
Wind southwest 10 to 15 knots.
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Weather Conditions
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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 PM EDT 15 July 2025 Tonight and Wednesday At 3:00 p.m. EDT today trough located on a line northeast-southwestover Havre Saint-Pierre.
By 2:00 a.m. EDT Wednesday departing trough located on a line
northeast-southwest over the Quebec Lower North Shore.
At 3:00 p.m. EDT today ridge located over northwestern Quebec.
By 8:00 p.m. EDT Wednesday weakening ridge located on a line
northwest-southeast over Sept-Îles.
At 3:00 p.m. EDT today approaching warm front located on a line
east-west over Lake Superior.
Great Lakes - Lake Erie and Lake Ontario Area
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