FZUS61 KBUF 142011 GLFSL Forecast for the Saint Lawrence River including the Thousand Islands Region National Weather Service Buffalo NY 411 PM EDT Tue Apr 14 2026 SLZ022-024-150300- Saint Lawrence River from Cape Vincent to Saint Regis 411 PM EDT Tue Apr 14 2026 .TONIGHT...Northwest winds 5 to 15 knots becoming east less than 10 knots. A chance of showers and thunderstorms early, then a chance of showers late this evening. .WEDNESDAY...East winds 10 knots or less becoming northeast. Showers with a chance of thunderstorms in the morning, then showers likely early in the afternoon. A chance of showers late. .WEDNESDAY NIGHT...East winds less than 10 knots becoming south. Showers. .THURSDAY...South winds 5 to 10 knots becoming southwest. Showers in the morning, then showers likely in the afternoon. .THURSDAY NIGHT...Southwest winds 10 knots or less becoming west. Showers likely. .FRIDAY...North winds 10 knots or less becoming northeast. A chance of showers. .SATURDAY...Southeast winds 5 to 15 knots becoming south. A chance of showers during the day, then showers likely Saturday night. .SUNDAY...Southwest winds 10 to 15 knots becoming west. Rain showers likely during the day, then a chance of rain and snow showers Sunday night. Winds and waves higher in and near thunderstorms. $$