


Great Lakes Forecast
Issued by NWS
Issued by NWS
553 FZUS61 KBUF 020802 GLFSL Forecast for the Saint Lawrence River including the Thousand Islands Region National Weather Service Buffalo NY 402 AM EDT Tue Sep 2 2025 SLZ022-024-021500- Saint Lawrence River from Cape Vincent to Saint Regis 402 AM EDT Tue Sep 2 2025 .TODAY...South winds less than 10 knots becoming southwest. A chance of showers and thunderstorms this afternoon. .TONIGHT...Southwest winds less than 10 knots. Partly cloudy. .WEDNESDAY...Light and variable winds becoming southwest 5 to 10 knots. Sunny. .WEDNESDAY NIGHT...South winds 10 knots or less increasing to 15 to 20 knots overnight. Mainly clear. .THURSDAY...South winds 15 to 20 knots becoming southwest 5 to 15 knots. Showers. .FRIDAY...South winds 5 to 15 knots becoming southwest. A chance of showers. .SATURDAY...Southwest winds 5 to 15 knots. A chance of showers. Winds and waves higher in and near thunderstorms. $$