St Lawrence River From Cape Vincent To St Regis
South winds 10 to 15 knots becoming southwest. A chance of showers and thunderstorms.
Southwest winds 5 to 15 knots becoming northwest. Showers and thunderstorms in the evening...then showers likely with a chance of thunderstorms after midnight. A chance of showers late. Some thunderstorms may produce gusty winds in the evening.
Northwest winds 10 knots or less. Becoming mostly sunny.
Light and variable winds. Mainly clear in the evening...then becoming partly cloudy.
Light and variable winds becoming southwest 5 to 10 knots. Becoming mainly clear.
West winds 5 to 10 knots becoming northwest. Mainly clear.
Northwest winds 10 knots or less becoming southwest. Mainly clear...then becoming partly cloudy. Winds and waves higher in and near thunderstorms.