


Great Lakes Forecast
Issued by NWS
Issued by NWS
729 FZUS61 KBUF 310202 GLFSL Forecast for the Saint Lawrence River including the Thousand Islands Region National Weather Service Buffalo NY 1002 PM EDT Sat Aug 30 2025 SLZ022-024-310900- Saint Lawrence River from Cape Vincent to Saint Regis 1002 PM EDT Sat Aug 30 2025 .REST OF TONIGHT...West winds less than 10 knots. Mostly cloudy late this evening, then clearing. .SUNDAY...Light and variable winds. Sunny. .SUNDAY NIGHT...Northwest winds less than 10 knots. Mainly clear. .MONDAY...Light and variable winds. Sunny. .MONDAY NIGHT...Light and variable winds. Partly cloudy. .TUESDAY...Light and variable winds. Partly cloudy. .WEDNESDAY...South winds 10 knots or less. Mainly clear, then becoming partly cloudy. .THURSDAY...South winds 5 to 15 knots becoming southwest. Showers likely. $$