


Great Lakes Forecast
Issued by NWS
Issued by NWS
631 FZUS61 KBUF 170802 GLFSL Forecast for the Saint Lawrence River including the Thousand Islands Region National Weather Service Buffalo NY 402 AM EDT Fri Oct 17 2025 SLZ022-024-171500- Saint Lawrence River from Cape Vincent to Saint Regis 402 AM EDT Fri Oct 17 2025 .TODAY...Northwest winds less than 10 knots becoming west. Sunny. .TONIGHT...Southwest winds less than 10 knots. A chance of rain showers late in the evening. .SATURDAY...South winds 10 knots or less. Mostly cloudy in the morning, then becoming partly sunny. .SATURDAY NIGHT...Southeast winds 5 to 15 knots becoming south. Mostly cloudy. .SUNDAY...South winds 10 to 15 knots increasing to 15 to 20 knots. Showers. .MONDAY...South winds 5 to 15 knots. Showers. .TUESDAY...South winds 5 to 10 knots becoming southwest. Showers. $$