FZUS61 KBUF 160212 GLFSL Forecast for the Saint Lawrence River including the Thousand Islands Region National Weather Service Buffalo NY 1012 PM EDT Wed Apr 15 2026 SLZ022-024-160900- Saint Lawrence River from Cape Vincent to Saint Regis 1012 PM EDT Wed Apr 15 2026 .OVERNIGHT...East winds less than 10 knots. A chance of showers, then showers likely late. .THURSDAY...Southeast winds 10 knots or less becoming south. Showers likely in the morning, then showers in the afternoon. .THURSDAY NIGHT...South winds 10 knots or less becoming northwest. Showers with a chance of thunderstorms in the evening, then showers likely overnight. .FRIDAY...North winds 10 knots or less. A chance of showers in the morning. .FRIDAY NIGHT...Northeast winds less than 10 knots. Mainly clear in the evening, then becoming partly cloudy. .SATURDAY...Southeast winds 5 to 10 knots becoming southwest 10 to 15 knots. A chance of showers during the day, then showers Saturday night. .SUNDAY...Southwest winds 10 to 15 knots becoming west. Rain showers likely during the day, then a chance of rain showers Sunday night. .MONDAY...Northwest winds 5 to 10 knots becoming southwest. Mostly cloudy, then clearing. Winds and waves higher in and near thunderstorms. $$