


Great Lakes Forecast
Issued by NWS
Issued by NWS
197 FZUS61 KBUF 130202 GLFSL Forecast for the Saint Lawrence River including the Thousand Islands Region National Weather Service Buffalo NY 1002 PM EDT Sat Jul 12 2025 SLZ022-024-130900- Saint Lawrence River from Cape Vincent to Saint Regis 1002 PM EDT Sat Jul 12 2025 .REST OF TONIGHT...South winds 10 knots or less. Mainly clear late this evening, then becoming partly cloudy. .SUNDAY...South winds 5 to 10 knots becoming southwest. A chance of showers and thunderstorms in the morning, then showers with thunderstorms likely in the afternoon. .SUNDAY NIGHT...Southwest winds 10 knots or less. Showers and thunderstorms likely in the evening, then showers likely overnight. .MONDAY...West winds 10 knots or less becoming southwest. A chance of showers in the morning. .MONDAY NIGHT...Southwest winds 10 knots or less. Clear. .TUESDAY...Southwest winds 10 knots or less becoming south. Mainly clear. .WEDNESDAY...Southwest winds 10 knots or less becoming south. A chance of showers. .THURSDAY...South winds 5 to 10 knots becoming west. Showers likely. Winds and waves higher in and near thunderstorms. $$