FZUS61 KBUF 161404 GLFSL Forecast for the Saint Lawrence River including the Thousand Islands Region National Weather Service Buffalo NY 1003 AM EDT Fri Oct 16 2026 SLZ022-024-162100- Saint Lawrence River from Cape Vincent to Saint Regis 1003 AM EDT Fri Oct 16 2026 .THIS AFTERNOON...South winds 10 to 15 knots becoming west. Periods of rain. .TONIGHT...Northwest winds 10 to 15 knots. A chance of rain showers early. .SATURDAY...Northwest winds 5 to 15 knots. Mostly sunny. .SATURDAY NIGHT...West winds less than 10 knots becoming southwest. Mainly clear. .SUNDAY...Southwest winds 5 to 15 knots. Mainly clear. .MONDAY...Southwest winds 5 to 10 knots becoming light and variable. Mainly clear. .TUESDAY...Light and variable winds. Mainly clear. $$