


Great Lakes Forecast
Issued by NWS
Issued by NWS
219 FZUS61 KBUF 300202 GLFSL Forecast for the Saint Lawrence River including the Thousand Islands Region National Weather Service Buffalo NY 1002 PM EDT Fri Aug 29 2025 SLZ022-024-300900- Saint Lawrence River from Cape Vincent to Saint Regis 1002 PM EDT Fri Aug 29 2025 .OVERNIGHT...West winds less than 10 knots. Partly to mostly cloudy. .SATURDAY...West winds 10 knots or less. A chance of showers. .SATURDAY NIGHT...West winds less than 10 knots. Partly cloudy in the evening, then becoming mainly clear. .SUNDAY...Light and variable winds. Sunny. .SUNDAY NIGHT...Northwest winds less than 10 knots. Mainly clear. .MONDAY...Light and variable winds. Mainly clear, then becoming partly cloudy. .TUESDAY...Light and variable winds. Partly cloudy. .WEDNESDAY...South winds 5 to 10 knots. A chance of showers Wednesday night. $$