


Great Lakes Forecast
Issued by NWS
Issued by NWS
503 FZUS61 KBUF 172002 GLFSL Forecast for the Saint Lawrence River including the Thousand Islands Region National Weather Service Buffalo NY 402 PM EDT Fri Oct 17 2025 SLZ022-024-180300- Saint Lawrence River from Cape Vincent to Saint Regis 402 PM EDT Fri Oct 17 2025 .TONIGHT...Southwest winds less than 10 knots. A chance of rain showers after midnight. .SATURDAY...South winds 10 knots or less. A chance of showers late in the morning. A chance of showers late. .SATURDAY NIGHT...Southeast winds 5 to 15 knots. A chance of showers overnight. .SUNDAY...Southeast winds 10 to 15 knots becoming south 15 to 20 knots. A chance of showers. .SUNDAY NIGHT...South winds 15 to 20 knots diminishing to 10 to 15 knots. Showers. .MONDAY...Southwest winds 5 to 15 knots. Showers. .TUESDAY...South winds 5 to 10 knots becoming southwest. Showers. .WEDNESDAY...Southwest winds 5 to 10 knots becoming west. Rain showers. $$