


Great Lakes Forecast
Issued by NWS
Issued by NWS
338 FZUS61 KBUF 112002 GLFSL Forecast for the Saint Lawrence River including the Thousand Islands Region National Weather Service Buffalo NY 402 PM EDT Thu Sep 11 2025 SLZ022-024-120300- Saint Lawrence River from Cape Vincent to Saint Regis 402 PM EDT Thu Sep 11 2025 .TONIGHT...North winds 10 knots or less becoming northeast. Becoming mainly clear. .FRIDAY...Northeast winds less than 10 knots. Sunny. .FRIDAY NIGHT...Light and variable winds. Partly cloudy in the evening, then becoming mostly cloudy. .SATURDAY...Light and variable winds becoming southwest 5 to 10 knots. A chance of showers. .SATURDAY NIGHT...Southwest winds less than 10 knots. A chance of showers. .SUNDAY...West winds less than 10 knots becoming northeast. Becoming mainly clear. .MONDAY...Northeast winds less than 10 knots. Mainly clear, then becoming partly cloudy. .TUESDAY...Light and variable winds. Mainly clear. $$