


Great Lakes Forecast
Issued by NWS
Issued by NWS
667 FZUS61 KBUF 282002 GLFSL Forecast for the Saint Lawrence River including the Thousand Islands Region National Weather Service Buffalo NY 402 PM EDT Thu Aug 28 2025 SLZ022-024-290300- Saint Lawrence River from Cape Vincent to Saint Regis 402 PM EDT Thu Aug 28 2025 .TONIGHT...Southwest winds 5 to 15 knots becoming northwest. Showers with a chance of thunderstorms through the early overnight, then scattered showers late. .FRIDAY...Northwest winds 5 to 10 knots becoming west. A chance of showers through early afternoon, then showers likely late. .FRIDAY NIGHT...West winds 10 knots or less. A chance of showers. .SATURDAY...West winds 10 knots or less. A chance of showers. .SATURDAY NIGHT...West winds less than 10 knots. A chance of showers in the evening. .SUNDAY...Light and variable winds. Mainly clear. .MONDAY...Light and variable winds. Mainly clear. .TUESDAY...South winds less than 10 knots. Partly cloudy. Winds and waves higher in and near thunderstorms. $$