Great Lakes Forecast
Issued by NWS
Issued by NWS
573 FZUS61 KBUF 080803 GLFSL Forecast for the Saint Lawrence River including the Thousand Islands Region National Weather Service Buffalo NY 403 AM EDT Tue Sep 8 2026 SLZ022-024-081500- Saint Lawrence River from Cape Vincent to Saint Regis 403 AM EDT Tue Sep 8 2026 .TODAY...West winds less than 10 knots. A chance of showers early. .TONIGHT...Light and variable winds becoming southeast 5 to 10 knots. Mostly cloudy. .WEDNESDAY...South winds 5 to 15 knots. A chance of showers in the morning, then showers in the afternoon. .WEDNESDAY NIGHT...Southwest winds 15 to 20 knots diminishing to 10 to 15 knots. Showers. .THURSDAY...West winds 5 to 15 knots becoming northwest. Partly cloudy. .FRIDAY...Northwest winds less than 10 knots becoming south. Mainly clear. .SATURDAY...South winds 5 to 15 knots becoming southwest. Mainly clear, then becoming partly cloudy. $$