Great Lakes Forecast
Issued by NWS
Issued by NWS
858 FZUS61 KBUF 121402 GLFSL Forecast for the Saint Lawrence River including the Thousand Islands Region National Weather Service Buffalo NY 1001 AM EDT Sat Sep 12 2026 SLZ022-024-122100- Saint Lawrence River from Cape Vincent to Saint Regis 1001 AM EDT Sat Sep 12 2026 .THIS AFTERNOON...South winds 10 knots or less becoming southwest. Sunny. .TONIGHT...South winds 5 to 10 knots becoming southwest 10 to 15 knots. Showers likely from late evening on. .SUNDAY...Southwest winds 5 to 15 knots. A chance of showers. .SUNDAY NIGHT...West winds 5 to 10 knots. A chance of showers. .MONDAY...Northwest winds 5 to 10 knots becoming light and variable. Mainly clear. .TUESDAY...South winds 5 to 15 knots increasing to 15 to 20 knots. A chance of showers Tuesday night. .WEDNESDAY...Southwest winds 10 knots or less becoming southeast. A chance of showers. $$