FZUS61 KBUF 091401 GLFSL Forecast for the Saint Lawrence River including the Thousand Islands Region National Weather Service Buffalo NY 1001 AM EDT Fri May 9 2025 SLZ022-024-092100- Saint Lawrence River from Cape Vincent to Saint Regis 1001 AM EDT Fri May 9 2025 .THIS AFTERNOON...Northeast winds 5 to 10 knots. A chance of showers, then rain late. .TONIGHT...North winds 10 knots or less. Rain. .SATURDAY...Northwest winds 5 to 10 knots. A chance of showers in the morning. .SATURDAY NIGHT...Northwest winds 5 to 10 knots becoming north. Becoming mainly clear. .SUNDAY...North winds 10 knots or less becoming south. Mainly clear. .MONDAY...Southwest winds 5 to 10 knots. Mainly clear. .TUESDAY...Southwest winds 10 knots or less becoming south. Partly to mostly cloudy. $$