Great Lakes Forecast
Issued by NWS
Issued by NWS
167 FZUS61 KBUF 111403 GLFSL Forecast for the Saint Lawrence River including the Thousand Islands Region National Weather Service Buffalo NY 1003 AM EDT Fri Sep 11 2026 SLZ022-024-112100- Saint Lawrence River from Cape Vincent to Saint Regis 1003 AM EDT Fri Sep 11 2026 .THIS AFTERNOON...Northwest winds 10 knots or less becoming west. Sunny. .TONIGHT...West winds 10 knots or less becoming south. Mainly clear through the early overnight, then becoming partly cloudy. .SATURDAY...South winds 10 knots or less becoming southwest. Mostly sunny. .SATURDAY NIGHT...South winds 5 to 15 knots. Mostly cloudy. .SUNDAY...Southwest winds 5 to 10 knots becoming northwest. Showers likely. .MONDAY...Northwest winds 10 knots or less becoming southeast. Mainly clear, then becoming partly cloudy. .TUESDAY...South winds 10 to 15 knots becoming southwest. A chance of showers during the day, then showers likely Tuesday night. $$