FZUS61 KBUF 212051 GLFSL Forecast for the Saint Lawrence River including the Thousand Islands Region National Weather Service Buffalo NY 451 PM EDT Fri Jun 21 2024 SLZ022-024-220315- Saint Lawrence River from Cape Vincent to Saint Regis 451 PM EDT Fri Jun 21 2024 .TONIGHT...Northeast winds less than 10 knots. A chance of showers after midnight. .SATURDAY...Light and variable winds. A chance of showers early, then showers likely late in the morning. Showers likely with a chance of thunderstorms in the afternoon. .SATURDAY NIGHT...Northeast winds less than 10 knots becoming east. Showers with a chance of thunderstorms. .SUNDAY...Southeast winds 10 to 15 knots becoming southwest. Showers with a chance of thunderstorms. .SUNDAY NIGHT...Southwest winds 10 to 15 knots. Showers with a chance of thunderstorms in the evening, then just a chance of showers and thunderstorms overnight. .MONDAY...Southwest winds 10 knots or less. Showers likely with a chance of thunderstorms. .TUESDAY...Southwest winds 10 knots or less. A chance of showers Tuesday night. .WEDNESDAY...Southwest winds 10 knots or less. Showers likely with a chance of thunderstorms. Winds and waves higher in and near thunderstorms. $$