FZUS61 KBUF 030213 GLFSL Forecast for the Saint Lawrence River including the Thousand Islands Region National Weather Service Buffalo NY 1012 PM EDT Thu Apr 2 2026 SLZ022-024-030900- Saint Lawrence River from Cape Vincent to Saint Regis 1012 PM EDT Thu Apr 2 2026 .REST OF TONIGHT...East winds 5 to 15 knots becoming south 15 to 20 knots. Rain showers likely late this evening, then rain showers after midnight. .FRIDAY...South winds 15 to 20 knots becoming southwest. Showers early, then showers likely late in the morning. A chance of showers early in the afternoon. .FRIDAY NIGHT...West winds 15 to 20 knots becoming north and diminishing to less than 10 knots overnight. Partly to mostly cloudy. .SATURDAY...Northeast winds 5 to 10 knots. Rain showers likely in the afternoon. .SATURDAY NIGHT...East winds 5 to 15 knots becoming south 15 to 20 knots. Showers. .SUNDAY...Southwest winds 15 to 20 knots becoming west 10 to 15 knots. Rain showers during the day, then a chance of snow showers Sunday night. .MONDAY...West winds 5 to 10 knots becoming northwest. A chance of snow showers during the day. .TUESDAY...North winds 10 knots or less becoming northwest. Mostly cloudy, then clearing. $$