


Great Lakes Forecast
Issued by NWS
Issued by NWS
746 FZUS61 KBUF 171402 GLFSL Forecast for the Saint Lawrence River including the Thousand Islands Region National Weather Service Buffalo NY 1002 AM EDT Fri Oct 17 2025 SLZ022-024-172100- Saint Lawrence River from Cape Vincent to Saint Regis 1002 AM EDT Fri Oct 17 2025 .THIS AFTERNOON...Northwest winds less than 10 knots becoming west. Mostly 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. $$