


Great Lakes Forecast
Issued by NWS
Issued by NWS
412 FZUS61 KBUF 302002 GLFSL Forecast for the Saint Lawrence River including the Thousand Islands Region National Weather Service Buffalo NY 402 PM EDT Sat Aug 30 2025 SLZ022-024-310300- Saint Lawrence River from Cape Vincent to Saint Regis 402 PM EDT Sat Aug 30 2025 .TONIGHT...West winds 5 to 10 knots becoming light and variable. A chance of showers early. .SUNDAY...Light and variable winds. Sunny. .SUNDAY NIGHT...West 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. $$