


Great Lakes Forecast
Issued by NWS
Issued by NWS
949 FZUS61 KBUF 290802 GLFSL Forecast for the Saint Lawrence River including the Thousand Islands Region National Weather Service Buffalo NY 402 AM EDT Fri Aug 29 2025 SLZ022-024-291500- Saint Lawrence River from Cape Vincent to Saint Regis 402 AM EDT Fri Aug 29 2025 .TODAY...Northwest winds 5 to 10 knots becoming west. A chance of showers through early afternoon, then showers likely late. .TONIGHT...West winds less than 10 knots. A chance of showers in the evening. .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, then becoming partly cloudy. .TUESDAY...Light and variable winds. Partly cloudy. $$